Circular No. 40/2017/TT-BTNMT on technical standards for the database of meteorological, hydrological, marine, air environment, and water observation, investigation, and survey data.

✦ 스마트 요약

Circular No. 40/2017/TT-BTNMT stipulates technical standards for the database of meteorological, hydrological, marine, air environment, and water observation, investigation, and survey data. This document applies to domestic and foreign agencies, organizations, and individuals related to the construction of the national meteorological and hydrological database.

적용 범위

Agencies, organizations, and individuals within the country; foreign organizations and individuals in Vietnam related to the construction of the national meteorological and hydrological database and management, exploitation, and exchange of meteorological and hydrological information and data.

핵심 사항

Agencies, organizations, and individuals must use the national elevation system for meteorological and hydrological information and data (Article 4).
Observation, investigation, and survey data on meteorology, hydrology, air environment, and water include specific contents such as air temperature, river water level, rainfall, suspended solids in water (Article 5).
Metadata must comply with the Dublin Core data standard and be encoded in XML language (Article 6).
Data and metadata are exchanged in the form of data files through storage devices and data transmission services (Article 7).
Quality control of information and data content is carried out according to specific items specified in Appendix 03 (Article 8).

🌐 이 문서의 사회적 영향

Enhance management and effective exploitation of the national meteorological and hydrological database.
Improve the quality of information and data serving weather forecasting work and disaster prevention.
It may impose a burden on organizations and individuals in complying with the database standard regulations.

❓ 자주 묻는 질문

To whom does this circular apply?

It applies to domestic agencies, organizations, and individuals and foreign organizations and individuals in Vietnam related to the construction of the national meteorological and hydrological database.

What contents does observation data include?

It includes air temperature, river water level, rainfall, suspended solids in water (Article 5).

Which standard must metadata comply with?

Must comply with the Dublin Core data standard and be encoded in XML language.

전문

MINISTRY OF NATURAL RESOURCES AND ENVIRONMENT

_______________________

Number: 40/2017/TT-BTNMT

SOCIALIST REPUBLIC OF VIET NAM
Independence - Freedom - Happiness

_____________________

Hanoi, October 23, 2017

CIRCULAR

Technical Standards for the Atmospheric, Hydrological, Marine, Air Environment, and Water Quality Data Sets
Conducting Observation, Investigation, and Survey

Pursuant to the Law on Meteorology and Hydrology dated November 23, 2015;

On the basis of Decision No. 36/2017/NĐ-CP dated April 4, 2017, of the Government stipulating the functions, tasks, powers, and organizational structure of the Ministry of Natural Resources and Environment;

At the proposal of the Director General of the National Centre for Hydro-meteorological Forecasting, the Department of Science and Technology, and the Department of Legal Affairs;

The Minister of Natural Resources and Environment issues this Circular stipulating technical standards for atmospheric, hydrological, marine, air environment, and water quality data sets conducting observation, investigation, and survey.

PART I

GENERAL PROVISIONS

Article 1. Scope of Regulation

This Circular stipulates technical standards for atmospheric, hydrological, marine, air environment, and water quality data sets conducting observation, investigation, and survey.

Article 2. Applicability

This Circular applies to domestic agencies, organizations, and individuals; foreign organizations and individuals in Vietnam related to the construction of national meteorological and hydrological databases and the management, exploitation, and exchange of meteorological and hydrological information and data.

Article 3. Explanation of Terms

In this Circular, the following terms are understood as follows:

1. Standard data set for meteorology and hydrology is the method defining the content, structure, type of information, and data storage format for the meteorological and hydrological data set when submitting and exchanging data.

2. Metadata for meteorology and hydrology is descriptive data about meteorology and hydrology that describes the content, format, quality, source, processing methods, and other characteristic information of meteorological and hydrological data.

3. Data structure is the organization of data in computers reflecting the hierarchical and interconnection relationships among data groups.

4. Information type of data is the name, value type, and field length of the data information.

5. National elevation system is the unified elevation system used nationwide with its origin at Hon Dau - Hai Phong.

6. VN-2000 is the name of the current national reference system and coordinate system of Vietnam uniformly applied throughout the country pursuant to Decision No. 83/2000/QĐ-TTg dated July 12, 2000 of the Prime Minister on the application of the VN-2000 National Reference System and Coordinate System.

7. Chart datum (zero chart or zero depth) is the standard horizontal plane chosen as the base for measuring sea depths, which is defined for each sea area using zero and typically selected as the lowest astronomical tide level (lowest low water) in that area. The State's zero depth level coincides with the historical lowest tidal level at the Hon Dau station.

8. XML (Extensible Markup Language) is an extended markup language used to build structured text documents for data exchange purposes.

PART II

TECHNICAL REGULATIONS

Article 4. Elevation Systems, Spatial Coordinates, and Time Reference Systems

Information and data on atmospheric, hydrological, marine, air environment, and water quality observations, investigations, and surveys must apply the following elevation systems, spatial coordinates, and time reference systems:

1. Elevation system:

a) Use the national elevation system for meteorological and hydrological information and data;

b) Use the chart datum for marine information and data.

2. Spatial coordinate system: Apply the VN-2000 National Reference and Coordinate System.

3. Time reference system: Year, month, day according to the Gregorian calendar; hour, minute, second according to Vietnam time zone (UTC+07:00).

Article 5. Content, structure, type of information, data

1. Content of information, data:

a) Surface meteorological information, data: Air temperature, dew point temperature, air humidity, atmospheric pressure, evaporation, sunshine duration, wind direction and speed, clouds, rainfall amount, soil temperature, ground surface condition, horizontal visibility, meteorological phenomena;

b) Hydrological information, data: River water temperature, water level, water surface width, basin length, basin area, cross-sectional area, water flow velocity, water discharge, depth, turbidity, slope, riverbed roughness coefficient, total runoff volume, tidal volume, suspended sediment discharge, suspended sediment concentration, total suspended sediment load;

c) Agricultural meteorological information, data: Water temperature on fields, deep soil layer humidity, near-surface air turbulence, soil moisture content, useful water quantity;

d) Marine meteorological information, data: Sea surface wind, long-range sea visibility, sea level, average sea level, tide, residual oscillation, wave type, wave factor, wave form, wave grade, sea surface temperature, sea surface state, seawater salinity, sea brightness, dangerous marine meteorological phenomena;

đ) Atmospheric and water environmental information, data: Chemical composition of rainwater, physical parameters, atmospheric environment chemical parameters, river, lake, sea water physical parameters, floating objects information on rivers and lakes;

e) Radiometric meteorological information, data: Direct radiation, radiation balance, reflection, scattering, total radiation, albedo, sun time, solar elevation angle, sky color, cloud cover, sun disk state, atmospheric transparency and turbidity;

g) Ozone-ultraviolet radiometric information, data: Total ozone, ultraviolet radiation intensity;

h) Radio remote sensing information, data: Air temperature, air humidity, atmospheric pressure, and wind;

i) Pilot wind information, data: High-altitude wind;

k) Survey and investigation information, data: hydrology, marine meteorology, marine environment;

2. The structure and type of information, data include information hierarchy, symbol, data type, field length, unit, and description, which are specifically defined in Appendix 01 of this Circular.

Article 6. Metadata

1. The content, structure, and type of metadata for observation, survey, and investigation of meteorology, hydrology, marine meteorology, atmospheric and water environments are established in accordance with the Dublin Core data standard and must be encoded.

2. Metadata for observation, survey, and investigation of meteorology, hydrology, marine meteorology, atmospheric and water environments include:

a) Content information group: title, subject, description, type, summary;

b) Copyright information group: author, co-author, publisher, copyright;

c) Descriptive information group: date, location, link, identifier, language.

3. Metadata is created during database construction and updated regularly.

4. The structure and type of metadata include information hierarchy, field symbol, value type, and description, which are detailed in Appendix 02 of this Circular.

Article 7. Data format and metadata

1. The data format and metadata shall be used in the XML language.

2. Data and metadata shall be exchanged and distributed in the form of data files through storage devices and data transmission services.

Article 8. Quality control of information and data content

The quality control of information and data content shall be carried out according to the following items:

1. Checking the content, structure, type of information and data.

2. Checking the completeness of information and data.

3. Checking the application schema in the exchange, distribution, and updating of data and metadata.

4. The details of the items and the level of inspection are specified in Appendix 03 of this Circular.

PART III

IMPLEMENTATION

Article 9. Effective Date

This Circular takes effect from December 8, 2017.

Article 10. Responsibility for Implementation

1. The Director of the Ministry's Office, the General Director of the Hydro-Meteorological Service, the Head of the Science and Technology Department, the Head of the Legal Department, the Heads of units under the Ministry, the Directors of Provincial Departments of Natural Resources and Environment under central cities and organizations and individuals related shall be responsible for implementing this Circular.

2. The Hydro-Meteorological Service shall be responsible for guiding, inspecting, and supervising the implementation of this Circular.

3. During the implementation of this Circular, if there are difficulties or obstacles, agencies, organizations, and individuals shall report to the Ministry of Natural Resources and Environment for consideration and resolution./.

Place of Receipt:

- Prime Minister's Office;

- Ministries, agencies equivalent to ministries, and government agencies;

- Provincial and municipal People's Committees directly under the central government;

- Legal Drafting Department (Ministry of Justice);

- Minister, Deputy Ministers;

- Provincial Departments of Natural Resources and Environment;

- Official Gazette; Government Electronic Portal;

- Ministry of Natural Resources and Environment website;

- File: VT, KHCN, PC, KTTVQG, BĐKH (200).

DEPUTY MINISTER

(Signed)

Nguyen Linh Ngoc

APPENDIX 01

CONTENT, STRUCTURE AND TYPE OF METEOROLOGICAL AND HYDROLOGICAL INFORMATION AND DATA

(Issued pursuant to Circular No. 40/TT-BTNMT dated October 23, 2017 Technical specifications chuẩn database on observation, investigation, survey of meteorology, hydrology, marine meteorology, air and water environment)

1. Surface Meteorological Information and Data
Serial number	Classification of information		Code	Data type		Field length	Decimal places	Unit		Description
Serial number	Object of information	Information component	Code	b. For Secondary Supplementary Classes:	English	Field length	Decimal places	Name	Abbreviation	Description
1	Air temperature	Salinity	T	NUMBER	Number	3	0	Celsius degree	°C	N \|\|\|Air temperature measured inside the shelter using a dry thermometer.
		Maximum temperature	\|\|\| Transmitter	number	Number	3- .	0	Celsius degree	°C	The highest temperature value selected from the observations (as prescribed) of the maximum thermometer and the dry bulb thermometer, prioritizing the maximum thermometer.
		Minimum temperature	Tn	number	Number	3	0	Celsius degree	°C	The lowest temperature value selected from the observations (as prescribed) of the minimum thermometer and the dry bulb thermometer, prioritizing the minimum thermometer.
		Wet bulb temperature	Tw	number	Number	3	0	Celsius degree	°C	Air temperature measured inside the shelter using a wet bulb thermometer. Tw is used to determine characteristics of air humidity.
2	Dew point temperature		Td	Number	Number	3	0	Celsius degree	°C	The temperature at which moisture in the air begins to condense (under constant pressure conditions).
3	Air humidity	Water vapor pressure (absolute humidity)	Average loan repayment period is 10 years;	NUMBER	Number	3	0	Hectopascal, Millibar	hPa, mb	The specific pressure of water vapor, measured in units of pressure.

		Saturated water vapor pressure	C\v	Number	Number	3
		Relative humidity	Ư	Number	Number	3
		Deficit saturation	For coal-fired thermal power plants where the enterprise holds 100% of the registered capital and uses 100% of its own capital to invest in the project approved by the competent authority, E is determined as 100%;	Number	Number	3
4	Atmospheric pressure	Station pressure	t,	NUMBER	Number	5
		Highest station pressure	Px	NUMBER	Number	5
		Lowest station pressure	Pn	NUMBER	Number	5
		Sea level pressure	Po	NUMBER	Number	5
		Highest sea level pressure	Pox	Number	Number	5
		Highest sea level pressure	Pon	NUMBER	Number	5

Hectopascal, Millibar	hPa, mb	The maximum specific pressure of water vapor achieved at a certain temperature in a state of equilibrium on a flat, clean surface.
Percentage	%	Is the ratio between the vapor pressure of water "1 'a in the air and the saturated vapor pressure at the same temperature.
Hectopascal, Millibar	hPa, mb	Is the difference between the saturated vapor pressure E and the vapor pressure e.
Hectopascal, Millibar	hPa, mb	Is the result of atmospheric pressure measurement at the station using various atmospheric pressure measuring devices and then calibrated.
Hectopascal, Millibar	hPa, mb	Is the highest atmospheric pressure value during the day or within the tidal pressure cycle at the station.
Hectopascal, Millibar	hPa, mb	Is the lowest atmospheric pressure value during the day or within the tidal pressure cycle at the station.
Hectopascal, Millibar	hPa, mb	Is the station pressure converted to sea level pressure. This pressure is used for comparing pressures between stations and analyzing Synop maps.
Hectopascal, Millibar	hPa, mb	Is the highest atmospheric pressure value during the day converted to sea level pressure.
Hectopascal, Millibar	hPa, mb	Is the lowest atmospheric pressure value during the day converted to sea level pressure.

5	Wind	Wind direction	dd	Character	Character	3 ’		Degree, or compass direction	N, NL, NE, ENE, ESE, SE, SSE, S, SSW, SW, W, WW, NW, NNW	* Wind direction is the direction from which the wind blows towards the observation point, observed by eye or instruments.
5	Wind	Wind speed	ff	NUMBER	Number	2	0	Meter/second	m/s	Is the distance traveled by a unit volume of air in a unit of time. Measured by various types of anemometers.
		Strongest wind direction during the day	dxdx	Character	Character	3		Degree, or compass direction	16 compass directions	Wind direction determined when the wind speed reaches its maximum during the day (from 19:00 yesterday to 19:00 today).
		Strongest wind speed during the day	fxfx	NUMBER	Number	2	0	Meter/second	m/s	Is the maximum wind speed during the day (from 19:00 yesterday to 19:00 today) measured over a two-minute average.
		Average wind direction in two minutes	For coal-fired thermal power plants where the enterprise holds 100% of the registered capital and uses 100% of its own capital to invest in the project approved by the competent authority, E is determined as 100%;₂For coal-fired thermal power plants where the enterprise holds 100% of the registered capital and uses 100% of its own capital to invest in the project approved by the competent authority, E is determined as 100%;₂	Character	Character	3		Degree, or compass direction	16 compass directions	The prevailing wind direction during the two-minute observation period.
		Average wind speed in two minutes	P₂P₂	NUMBER	Number	2	0	Meter/second	m/s	Wind speed averaged over two minutes.
		Strongest gust wind direction in two seconds	dx₂dx₂	Character	Character	3		Degree, or compass direction	16 compass directions	The strongest instantaneous wind direction occurring in two seconds.

		Strongest gust wind speed in two seconds	fxfx	Number	Number	2	0	Meter/second	m/s	The strongest wind speed occurring in two seconds.
6	Evaporation	Evaporation amount	E	Number	Number	3	0	Millimeter	mm	Is the amount of water evaporated on a unit area in a unit of time.
7	Soil temperature	Surface soil temperature	Tg	Number	Number	3	0	Celsius degree	°C	Is the temperature of the soil measured at the surface.
		Highest soil temperature	Tgx	Number	Number	3	0	Celsius degree	°C	Is the highest surface soil temperature.
		Lowest soil temperature	Tgn	Number	Number	3	0	Celsius degree	°C	Is the lowest surface soil temperature.
		Soil temperature at deep soil layers (5,...,300)	Tg₅Tg300	Number	Number	3	0	Celsius degree	°C	Is the temperature at the thermometers located at deep soil layers: 5, 51,..., 300 cm in loose soil without vegetation.
8	Ground state	Ground state	Es	Code	Number	1	0			Is the state of the ground observed by eye, indicating the moisture level of the observed area and defined by a code number.
9	Precipitation	Precipitation amount	\|\|\| R	Number	Number	5	0	Millimeter	mm	Is the thickness in millimeters of the layer of water due to rain, snow, hail, fog, etc., covering a horizontal surface before evaporation, infiltration, or runoff.
		Intensity of precipitation	Ri	Number	Number	5	0	Millimeter/hour	mm/h	Is calculated based on the amount of precipitation over a unit of time and classified into three levels: strong (heavy), moderate (medium), and light (light).
		Dimensions (solid)	For coal-fired thermal power plants where the enterprise holds 100% of the registered capital and uses 100% of its own capital to invest in the project approved by the competent authority, E is determined as 100%;	NUMBER	Number	3	0	Centimeter	em	For solid precipitation like hail, measure the diameter of the average and largest particles.
		Snow depth tuyết ¹¹		number	Number	4 ; 0		Centimeter		Measure the thickness of the snow layer and the weight of a snow sample.

10	Clouds	Total cloud cover	N \|\|\|	Number	Number	2	0	Portion of sky	0-10	Is the estimation of the portion of the sky covered by clouds, expressed as a fraction of the total sky (from 0 to 10 tenths of the sky).
		Low cloud cover	Ns	Number	Number	2	0	Portion of sky	0-10	Is the estimation of the portion of the sky covered by low clouds, expressed as a fraction of the total sky (from 0 to 10 tenths of the sky).
		Middle clouds	Cm	Character	Character	2	0			According to international convention.
		High clouds	ốn ... tại: ...	Character	Character	2	0			According to international convention.
		Low clouds	C_{nh cơ}	Character	Character	2	0			According to international convention.
		Type of cloud, Form of cloud, Kind of cloud, Sub-form of cloud		Character	Character	50				According to international convention, clouds are classified into different types, forms, and kinds of clouds and are designated according to specified symbols.
		Base height of clouds	h	Number	Number	3	0	Meter	m	Is the distance from the bottom of the cloud layer to the ground surface of the station area. Determined by eye, balloon, light beam, or altimeter.
11	Meteorological phenomena			Character	Character	100				Each meteorological phenomenon is marked by a specific symbol, as prescribed.
12	Sunshine	Sunshine duration	Sh	Number	Number	3	0	Hour	h	Duration of solar radiation > 0.1 kW/m².² .
13	Horizontal visibility		vv	Number	Number	2	0	Visibility grade, meter	grade, m	Is a characteristic indicating the clarity of the atmosphere, the maximum distance at which an absolute black object can be distinguished.
2. Hydrological Data Information
Serial number	Classification of information		Code	Data type		Field length	Decimal places	Unit		■ Description
Serial number	Language	Information component	Code	English Vietnamese	English Belgium	Field length	Decimal places	Name	Abbreviation	■ Description
1	Water temperature	Highest water temperature	Twx	Number	Number 3		0	Celsius degree	Water temperature representing the thermal movement of molecules in river water.

		Water temperature	Tw	NUMBER	Number	-		0	Celsius degree	°C	*279 www.Th**
		Lowest water temperature	Twn	NUMBER	Number	-		0	Celsius degree	°C
2	Rainfall	Daily rainfall	\|\|\| R	NUMBER	Number	5		0	Millimeter	mm	Is the thickness in millimeters of the layer of water due to rain on a horizontal surface before evaporation, infiltration, or runoff.
3	Water level	Hourly water level	H	NUMBER	Number	6		0	Centimeter	cm	Water level is the height of the water surface in the river at a measurement point relative to the national standard elevation.
4	Depth		h	NUMBER	Number	<5	4	2	Meter	m	Is the vertical distance from the water surface to the riverbed.
						>5	4	1
5	Width of water surface		B	NUMBER	Number	<100	4	1	Meter	n	Distance from the left bank edge to the right bank edge perpendicular to the flow direction.
						>100	6
6	Length of drainage basin		nh cơ	NUMBER	Number	4		0	Kilometer	km	Is the distance along a zigzag path through the midpoints of straight sections cutting across the drainage basin and perpendicular to the flow direction from the source.
7	Drainage basin area		A	Number	Number	<10	4	2	Square kilometer	km²	Is the area that collects rainwater up to a certain point along the river.
						10 <100	4	1
						>100	5	0
8	Cross-sectional area		F	number	Number	<10	. 4	2			Area of section, flooded area, area between two velocity measurements.
						10 <100	4	1	Square meter m²²
			councillORS			>100	4	0
9	Velocity		V : number ¹		Number	^{5 2}			Meter/second m/s		Point velocity, average cross-sectional velocity, average surface velocity.
10	Discharge	Discharge	Q : number		Number<1	5	5 3		Cubic meter per second m³/s	Is the volume of water flowing past a cross-section of the river in a unit of time.

	1. The contents and levels of expenditure from the state budget to support the implementation of initiatives as stipulated in Chapter II of this Circular are maximum levels. Based on the ability to balance resources, the Ministers of Ministries, Heads of central agencies, Provincial People's Councils, and centrally governed cities shall decide on specific contents and levels of expenditure for initiative activities that ensure appropriateness.	1. The contents and levels of expenditure from the state budget to support the implementation of initiatives as stipulated in Chapter II of this Circular are maximum levels. Based on the ability to balance resources, the Ministers of Ministries, Heads of central agencies, Provincial People's Councils, and centrally governed cities shall decide on specific contents and levels of expenditure for initiative activities that ensure appropriateness.				1 <10	4	2	/second		r 7 7—7 . —: Through a cross-section of the river in a unit of time. * ° rọ
						10 <100	4	1
						>100	6	0
11	Slope		I	NUMBER	Number	<1	4	2	Permyriad	.10'⁴	+84-8-3
						1< 10	万分之一 3	1
12	Roughness coefficient of the riverbed		n	NUMBER	Number	5		□ 3			>
13	Total discharge		- Electronic Information Portal_{Article 24}	NUMBER	Number	4		0	Thousand, million, or billion cubic meters	,10³, ,13⁶or 10^6 m³³	Is the total volume of water passing through a cross-section of the river during a given period.
14	Tide volume		on Month Day Year	NUMBER	Number	<100	4	2	Thousand cubic meters	,10³ m³	Is the volume of water flowing due to the rise and fall of the tide.
						100< W<1000	5	1
15	Suspended sediment concentration		c_s	number	Number	10 _s <100	4	1	Gram per cubic meter	g/m³³	Is the dry weight of suspended sediment in a unit volume of mixed water and sediment.
						<10	4	0
						<1	5	Briefing signed on February 18, 2025 3	Kilogram per cubic meter (used for stations with high SSC)	kg/m³³
						1 _{Provincial People's Committees set specific prices} <10	4	2
						10 _s <100	4	1
						>100	4	0

16	Suspended sediment discharge		Qs	Number	Number	<100	4	1	Gram per second (used for stations with low SSC)	g/s	* Is the amount of suspended sediment transported by the water flow through a cross-section in a unit of time. ơ'' pọ ■4 + £
						<1	5	3	Kilogram per second	kg/s
						1 < 10	4	2
						10 <100	4	1
						>100	4	0
17	Total suspended sediment load		on Month Day Year_Qs	NUMBER	Number	<100	4	1	Million tons or hundred thousand tons	10^6 tons or 10^5 tons³ ton or 10^6⁶tons	f 1 r Is the total amount of suspended sediment transported through a cross-section over a period of time.
						>100	. 4	0
3. Agricultural Meteorological Data Information
Serial number	Classification of information COLLECT		Code	Data type		Field length		Decimal places	Unit		Description
	Object of information	Information component		b. For Secondary Supplementary Classes:	Chinese				Name	Abbreviation Field water temperature
1	Field water temperature measured by a thermometer.	Field water temperature measured by a thermometer.	Tw	NUMBER	Number	3		0	Celsius degree	°C	Soil moisture at deep soil layers
2	Moisture content in deep soil layers	Soil moisture measured by quantitative method (drilling and drying)	"5. The pre-tax weighted average cost of capital i (%) is determined according to the formula below:₅,P10,...	number	Number	3		0	Percentage	%	Soil moisture: The amount of water in the soil is represented as a percentage of the absolute dry weight of the soil. P(%)=(zzzl-zzz2) (zzz2- zzz3) 100%

										1 — - ———— m1: weight of the box and wet soil before drying; m2: weight of the box and soil after drying; m3: weight of the box.
		Soil moisture measured by qualitative method (visual estimation)	Uo-2cm	number	Number	3	1	\|\|\|	\|\|\|	Class 1: Excessively moist (>= 100%)
			U10-12cm							Class 2: Moist (- 85-99%)
										Class 3: Moderately moist (~65-84%) Class 4: Relatively dry (-40-64%)
0	Class 5: Very dry (~<=39%)			Character	Character	100				万分之一无效 Air disturbance at near-surface air layers Regular monitoring during different growth stages and development phases of plants
5	Water content in soil	Water content in soil expressed as a percentage	t,	NUMBER	Number	0	0	Percentage	%	Method for calculating soil moisture
5	Water content in soil	Water content in soil expressed as millimeters	V	Number	Number	0 3	0	Millimeter	mm	v=p.d.h.o,l P: soil moisture content (%) d: Density of soil (g/cm³)³h: thickness of the drilled soil layer (cm)
6	Useful water content		on Month Day Year	Number	Number	3	0	Millimeter	mm	W=(P-a)dh 0,1 P: soil moisture content a: permanent wilting point d: Density of soil (g/cm³)³h: thickness of the soil layer (cm)

**4. Information on Sea Conditions**
Serial number	Classification of Information Symbol Type of Data	Commercial ruler	Part	Unit	Description

	Object of information	Information component		b. For Secondary Supplementary Classes:	English	case	Decimal	Name	Abbreviation	-1
1	Surface Wind over the Sea	Wind speed	ff	So	Number	2'	•1	Meter/second	n		*
1	Surface Wind over the Sea	Wind direction	dd	Character	Character	3		According to 16 compass directions	N, NNE, NE, ENE, ESE, SE, SSE, S, SSW, SW, WSW, W, WNW, NW, NNW	1: +84-8-3930 3279 *
2	Visibility at sea		vv	NUMBER	Number	2	0	Visibility Level, Kilometer, Meter	0-9, km, m	Visibility is determined according to 10 levels from 0 to 9 - 0-2 km, 2-5 km, 5-10 km, 10-20 km, 20-50 km, >50 km.
3	Sea level		H	NUMBER	Number	4	0	Centimeter	aracter, n	Sea level observation H = MSL + T + MR.
4	Mean Sea Level		MSL	NUMBER	Number	4	0	Centimeter	cm	Mean sea level is the average value of all observed sea levels over a certain period of time.
5	Tides		T	Number	Number	3	0	Centimeter	cm	Tides are periodic oscillations caused by tidal forces. These forces arise due to the gravitational pull between Earth, Moon, and Sun. • o • 1
6	Residual Oscillation		MR	Number	Number					It is the non-tidal component caused by weather disturbances and is determined after separating the tide from the total water level oscillation.

7	Types of Ocean Waves			Code	Character	3				Includes wind waves, swell waves, shallow water waves, ripples, surf waves, breaking waves... see QPHV.94 TCN 8-2006 Page 38? 34.
		Wave Height	h	NUMBER	Number	4	2	Meter	11	"b) In addition to the lists of public services issued according to the provisions of Clause 2, Article 4 of this Decree, specialized agencies under provincial People's Committees shall report to the provincial People's Committee for decision-making on amending, supplementing, or issuing the list of public services funded by the state budget within their jurisdiction and consistent with the local budget capacity within the approved budget by the Provincial People's Assembly, and send it to the Ministry of Finance and relevant ministries and sectors for supervision during implementation." Measured in meters as the vertical distance from the wave trough to the wave crest.
	Wave Factor	Amplitude	a	NUMBER	Number	4	2	Meter	I	Half the vertical distance measured in meters from the wave trough to the wave crest.
		Wave Length	X	Number	Number	n 5	0	Meter	1	Measured in meters as the horizontal distance between two consecutive wave crests or troughs.
		Wave Slope	a	Number	Number	0	0	Degree	0	_F _ _ The angle formed by the straight line connecting the wave crest to the lowest point between two consecutive wave troughs. Facing away from the wind direction.
8		Wave Period	T	NUMBER	Number	0	1	Seconds	s	The time interval in seconds between two consecutive wave crests passing a fixed point on the surface of the sea.
		Wave Speed	c	NUMBER	Number	3	1	Meter/second	m/s	The distance in meters that a wave crest travels in one second in the direction of wave propagation.
		Wave Frequency	P	NUMBER	Number	2		Seconds	s	The number of wave crests passing a fixed point on the surface of the sea in one second.
		Wave Direction	dwdw	Character	Character			According to 8 main compass directions	N, NE, E, SE, S, SW, W, NW	Wave direction is defined as the direction from which the waves come. It is determined according to 8 main compass directions.
9	Wave Form		D, KĐ	Character	Characteristic 2 无效					There are two main types of waves: regular and irregular. Characteristics of regular and irregular waves are described in Table 5 of Coastal Sea Observation Regulations.

10	Wave Class			Character	Character	3		\|\|\|	I- X	- _ Waves are classified into classes from I to IX.
11	Sea Surface Condition			Number	Number	1	0	\|\|\|	0-9	Description
12	State of the sea surface under the influence of wind.		Tw	Temperature	Number	3	0	Celsius degree	°C	Sea surface temperature reflects the thermal movement of molecules in seawater.
13	Salinity		s	NUMBER	Number	3	0	Thousandth part	°/oo	The salt content (in grams) contained in 1 kg of seawater is called the salinity of seawater.
14	Sea brightness	Type of sea brightness	TSS, SVL	Character	Character	3				Bioluminescence is the phenomenon of light emission from microorganisms, particularly marine organisms at the surface layer, which can be observed at night.
14	Sea brightness	Intensity of sea brightness		Number	Number	1		Level	0-4
15	Dangerous meteorological and oceanographic phenomena			Character	Character	150				Laws
5. Environmental data information
5.1. Atmospheric environmental data information
Serial number	Classification of information		Code	Data type		Field length	Decimal places	Unit		Description
Serial number	Object of information	Information component	Code	b. For Secondary Supplementary Classes:	English Belgium	Field length	Decimal places	Name	Abbreviation	Description
1	Total monthly dust deposition	Total monthly dust deposition	Briefly describe technical improvements, production processes, raw materials, designs; new technology applications such as automation, digitalization, clean technology; management, marketing, distribution solutions; products winning awards or certifications related to innovation…):…	Number	Number	4	1	Milligram	me	Determined by the method of collecting dust on filter paper and weighing the filter paper to determine the concentration of dust in the air.
1	Total monthly dust deposition	Volume after each time		Number	Number		3	Milliliter	ml

Filtrate
		Total volume obtained after filtration		number	Number	5	1	Milliliter	ml	6.2
		Sample bottle number		number	Number	2	0	Portable gas fire extinguisher with a capacity of no less than 3kg or portable water-based fire extinguisher with a capacity of no less than 6 liters		0 en
		Number of rain events in a week		Number	Number	2	0	Decimeter wave radar		84-8-3 Yes
	•	Total rainfall collected		Number	Number	5	1	Milliliter	ml	* Tel: + 4
		Electrical conductivity	EC	Number	Number	4	1	Microsecond/centimeter	us.cm	'u fC determined by an electrical conductivity meter.
		pH value	pH	Number	Number	4	2			determined by a pH meter or colorimetric method.
		Content nh/	ealth₄⁺	Number	Number	5	3	Milligram/liter,	mg/l, meq/l
		Sodium content⁺'	NaBr⁺	Number	Number	5	3	Milligram/liter,	mg/l, meq/l
2	Rainwater	Potassium content⁺ ’	ảo⁺	Number	Number	5	3	Milligram/liter,	mg/l, meq/l
		Calcium content²⁺	Ca²⁺	Number	Number	5	3	Milligram/liter,	mg/l, meq/l
		Magnesium content⁺	Mg3P2²⁺	Number	Number	5	3	Milligram/liter,	mg/l, meq/l
		Chromium content	cr	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	councillORS
		Content no₃’	NO₃	Number	Number	5	3	Milligram/liter.	mg/l, meq/l

		Sulfate content	so4-	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	43
		Carbonate content	HCO3-	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	*79 w**
		Total ion content	i'+ i⁺	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	°
		Analytical error		NUMBER	Number	4	3	Percentage	%	1 1 ■4
5.2. Water environmental data information
Serial number	Classification of information		Code	Data type		Field length	Decimal places	Unit		£ Description
Serial number	Object of information	Composition of information	Code	b. For Secondary Supplementary Classes:	English	Field length	Decimal places	Name	Abbreviation	£ Description
1	River status and hydro-meteorological conditions	Flow condition		Character	Character	10				The flow condition of the river (strong, moderate, calm).
		Floating objects, unusual phenomena		Character	Character	20				cs Remarks (4) Describe floating objects and unusual phenomena (sudden changes in turbidity, oil slicks, fish deaths).
		Aroma		Character	Character	20				Odor determined by sensory perception at normal temperature and 60°C.
		Taste		Character	Character	20				Determined by taste sensation.
2	River water environment	Electrical conductivity	EC	Number	Number				us/cm
		pH value	pH	NUMBER	Number	4	2
		Total ion content	i'+ i⁺	Number		5	3	.Milligram/liter,	mg/l, meq/l
!		Sodium content	NaBr⁺	Number		5	_n ' Milligram/liter,		mg/l, meq/l
!		Content Potassium content ^ảo		Number		5	_ Milligram/liter. 3		mg/l, meq/l

Calcium content²⁺	Ca²⁺	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	*
Magnesium content²⁺	Mg3P2²⁺	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	\|\|\| meteorological and hydrological works pursuant to the Ordinance on Meteorology and Hydrology dated December 2, 1994; Briefing signed on February 18, 2025
Carbonate content	Add distilled water to make up to 1 liter of solution.₃²'	Number	Number	5	Briefing signed on February 18, 2025 3	Milligram/liter,	mg/l, meq/l	4-8-39.
Sulfate content	SO₄²'	Number	Number	5	Briefing signed on February 18, 2025 3	Milligram/liter,	mg/l, meq/l	Tel: +8
Bicarbonate content	hco₃-	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	*
Chromium content	cr	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	Laws
Analytical error		Number	Number	5	3	Percentage	%
Total iron content		Number	Number	5	3	Milligram/liter,	mg/l, meq/l
Silicon dioxide content	SiO₂	Number	Number	5	3	Milligram/liter,	mg/l, meq/l
Total alkalinity		Number	Number	3	1	Milligram/liter,	mg/l, meq/l
Total hardness		Number	Number	4	2	Milligram/liter,	mg/l, meq/l
TCVN 6184 - 1996 (ISO 7027 - 1990) or SMEWW 2130 B		Number	Number				NTU	Not analyzed
Salinity	s	Number			Parts per thousand		(7oo)	Not analyzed

Chemical oxygen demand	of pollutant parameters in bioethanol production effluent when discharged into water sources not used for domestic water supply.	Number	Number	3	1	Milligram/liter	mg/l	go	= Amount of oxygen in potassium dichromate (K2Cr2O7) used to oxidize organic matter in water.₂Cr₂C3H6O3₂) needed to oxidize organic matter in water.
Dissolved oxygen	DO	Number	Number	4	2	Milligram/liter	mg/l	* The amount of dissolved oxygen in water necessary for the survival of aquatic life.
Content po³-₄ (P)	PO³-₄ (P)	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	H84-8-393
Fluoride content		NUMBER	Number	5	3	Milligram/liter,	mg/l, meq/l	1 £ *
Nitrate content₂	NO3-₂	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	vSoft
Content nco₃'	nco₃’	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	Lai
Content nh/	ealth₄⁺	Number	Number	5	3	Milligram/liter,	mg/l, meq/l
Total nitrogen content	Total N	Number	Number	5	3	Milligram/liter	mg/l
Total phosphorus content	Total p	Number	Number	5	3	Milligram/liter	mg/l
Chromium (VI) content	Cr(VI)	NUMBER	Number	5	3	Milligram/liter	mg/l
Arsenic content	Arsenic	number	Number	5	3	Milligram/liter	mg/l

Mercury content	Hg	NUMBER	Number	5	3	Milligram/liter	mg/l	*
Zinc content	Zn	Number	Number	5	3	Milligram/liter	mg/l	) 3279
Cadmium content	Cd	Number	Number	5	3	Milligram/liter	mg/l	ppm
Lead content	Lead	Code	Number	5	3	Milligram/liter	mg/l	•4 +
Copper content	Cu	Number	Number	5	3	Milligram/liter	mg/l	£ mg/l
Nickel content	Ni	Number	Number	5	3	Milligram/liter	mg/l	ppm
Manganese content	Mn	Number	Number	5	3	Milligram/liter	mg/l	1
Total chromium content	Cr total	Number	Number	5	3	Milligram/liter	mg/l
Oil and grease		Number	Number	5	3	Milligram/liter	mg/l
Total coliform		Number	Number	5	3	Milligram/liter	mg/l
Residual pesticide - Organic chlorine		Number	Number	5	3	Milligram/liter	mg/l
Aldrin + Dieldrin		Number	Number	5	3	Milligram/liter	mg/l
Endrin		NUMBER	Number	5	3	Milligram/liter	mg/l
BHC		Number	Number	5	3	Milligram/liter	mg/l

DDT Number 5 3 Milligram/liter mg/l
		Endouiran		Number	Number	5	0 3	Milligram/liter	mg/l
		Lindan		NUMBER	Number	5	Briefing signed on February 18, 2025 3	Milligram/liter	mg/l
		Chlordane		Number	Number	5	3	Milligram/liter	mg/l
		Heptachlor		Number	Number	5	3	Milligram/liter	mg/l
		Residual pesticide - Organic phosphorus		Number	Number	5	Briefing signed on February 18, 2025 3	Milligram/liter	mg/l	: +84-8-3930
0 3	Large volume particulate matter	Paration		Number	Number	5	Briefing signed on February 18, 2025 3	Milligram/liter	mg/l	£
		Malation		NUMBER	Number	5	3	Milligram/liter	mg/l	*
		Total volume drawn		Number	Number	万分之一 3		Cubic meter	n 3	vSoft
		Total dust content		Number	Number			Milligram/cubic meter	mg/m3³	Lai
		Content nh/	ealth₄⁺	Number	Number	5	3	Milligram/cubic meter	mg/m³	•
		Content of SO₄^2:	SO₄²'	Number	Number	6	4	Milligram/cubic meter	mg/m³
		Content nco₃’	nco₃'	Number	Number	5	万分之一 3	Milligram/cubic meter	mg/m³
		Lead content	Lead	NUMBER	Number	5	3	Milligram/cubic meter	mg/m³
5.3. Lake water environmental data information
Serial number	Classification of information		Code	Data type		Length	Decimal places	Unit		Description
Serial number	Object of information	Composition of information	Code	b. For Secondary Supplementary Classes:	English Belgium	Length	Decimal places	Name	Abbreviation	Description

1	Lake status and environmental phenomena	Wave and wave level		Number	Number	4	2	Meter	n	Weak (height: 0-0.25m); Moderate (0.25-0.5m); Strong (height > 0.75m).
		Flow condition		Character	Character	10				Description if present °
		Floating objects		Character	Character	20				Described if present 1
		Development of aquatic plants		Character	Character	20				4- + Algae... described if present
		Unusual phenomena		Character	Character	20				Describe clearly: sudden changes in turbidity, oil slicks, fish deaths...
2	Lake water environment	Clarity		Number	Number	3	0	Centimeter	cm	Measured directly according to regulations. Determined by a transparency meter.
		Aroma		Character	Character	20				Odor determined by sensory perception at normal temperature and 60°C.
		Taste		Character	Character	20
		pH value	pH	Number	Number	4	2
		Dissolved oxygen	DO	Number	Number	4	2	Milligram/liter	mg/l	The amount of dissolved oxygen in water necessary for the respiration of aquatic life.
		Electrical conductivity	EC	Number	Number	³	1		us/cm
		Salinity	s	Number	Number	5	3	Thousandth part	(7oo)
		Total ion content		Number	Number	5	3	Milligram/liter,	mg/l, meq/l
		Sodium content	NaBr⁺	Number		5	3	Milligram/liter, ...	mg/l, meq/l
		Sodium and Potassium content		Number		5 3		Milligram/liter,	mg/l, meq/l

Calcium content²⁺	Ca²⁺	NUMBER	Number	5	0 3	Milligram/liter,	mg/l, meq/l	£
Magnesium content²⁺	Mg3P2²⁺	NUMBER	Number	5	0 3	Milligram/liter,	mg/l, meq/l	6£
Carbonate content₃	Add distilled water to make up to 1 liter of solution.₃²'	Number	Number	5	national 3	Milligram/liter,	mg/l, meq/l	o rn Ể
Sulfate content^:	SO₄²’	Number	Number	5' ■	3	Milligram/liter,	mg/l, meq/l	w * ■4 •„ íệ
Bicarbonate content	hco₃-	Number	Number	5	-3 3	Milligram/liter,	mg/l, meq/l	■ £
Chromium content	cr	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	ữft⁴
Analytical error		Number	Number	5	3	Percentage	%
Total iron content		Number	Number	5	-3 3	Milligram/liter,	mg/l, meq/l
Silicon dioxide content	SiO₂	Number	Number	5	2	Milligram/liter,	mg/l, meq/l
Total alkalinity		Number	Number	4	1	Milligram/liter,	mg/l, meq/l
Total hardness		Number	Number	4	2	Milligram/liter,	mg/l, meq/l
TCVN 6184 - 1996 (ISO 7027 - 1990) or SMEWW 2130 B		NUMBER	Number				NTU
Salinity	s	Number	Number	5	-3 3	Thousandth part	(7oo)
Chemical oxygen demand	of pollutant parameters in bioethanol production effluent when discharged into water sources not used for domestic water supply.	sp	Number	4	1	Milligram/liter	mg/l	Amount of oxygen in potassium dichromate (K2Cr2O7) used to oxidize organic matter in water.
Dissolved oxygen	DO	number	Number 4 2			Milligram/liter	mg/l. The amount of dissolved oxygen in water necessary for the respiration of aquatic life.

5.4. Coastal marine water environmental data information
Serial number	Classification of information		Code	Data type		Field length	Decimal places	Unit		4ỉ Description <=>
Serial number	Information target	Information component	Code	ị.. Vietnamese	English	Field length	Decimal places	Name	Abbreviation	4ỉ Description <=>
1	Marine status and environmental phenomena	Coastal current		Character	Character	10				8-393
		Direction		Character	Character	10				■4
		Velocity		Character	Character	10				Tel: +
		Water color		Character	Character	20				*
		Oil slick		Character	Character	20
		Algal development		Character	Character	20				vSo
		Turbidity change		Character	Character	20				Lai
		Floating objects		Character	Character	20
2	Marine water environment	pH value	pH	NUMBER	Number	4	2
		Electrical conductivity	EC	Number	Number	3	1		ps/cm
		Salinity	s	Number	Number	5	3	Thousandth part	(7oo)
		Biological Oxygen Demand BOD	- Column A of Table 1 specifies the values₅	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	The amount of oxygen required over five days at 20°C in the dark to avoid photosynthesis effects.
		Ammonium content^;	NH4+	Number	Number	5	3	Milligram/liter,	mg/l, meq/l
		Nitrite content NO2-₃ Number			Number	Milligram/liter, 3 3			mg/l, meq/l
councillORS		Nitrate content NO3- Number X _{Milligram/liter.}PO4 Number				Milligram/liter. 5 3			mg/l, meq/l

		Silicate content₄’	PO₄’	number	Number	5	3	Milligram/liter,	mg/l, meq/l	43 H
		Lead content	Si	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	mg/l meq/l
		Copper content	Lead	Number	Number	5	3	Milligram/liter,	mg/l meq/l	0£
		mg of oxygen in potassium dichromate (K2Cr2O7) used to oxidize organic matter in water.	Cu	Number	Number	5	3	Milligram/liter,	mg/l, meq/l	rọ 1 ■4
		Chemical oxygen demand	of pollutant parameters in bioethanol production effluent when discharged into water sources not used for domestic water supply.	Number	Number	3	1	Milligram/liter,	mg/l, meq/l	mg of dissolved oxygen in water necessary for the respiration of aquatic life.
		Dissolved oxygen	DO	Number	Number	4	2	Milligram/liter,	mg/l, meq/l	6. Radiation data information °
Type
	Classification of information			Data	Length	Description	Part	Unit		Vietnamese
Serial number	Object of information	Information component	Code	Decade	English	Description	Abbreviation 分级	Name	Direct radiation	Vietnamese
1	Calorie/ square centimeter minute; watt/square meter	Cal/cm	s	Number	Number	6	2	.minute; w/m	Measured directly with a pyranometer.²Horizontal diffuse radiation²	S
1	Calorie/ square centimeter minute; watt/square meter	.minute; w/m	S'=S*sinh	Number	Number	6	2	.minute; w/m	Measured directly with a pyranometer.²Radiation balance²	Radiation balance (calculated)₀

2	Shortwave radiation balance	Bn	B	Number	Number	6
		Radiation balance without direct radiation	B-S'	NUMBER	Number	6
		Longwave radiation balance	Bd	Number	Number	6
		Reflection	Shortwave reflection coefficient	Number	Number	6
3	Rn	Scattering	Diffuse radiation coefficient	Number	Number	6
4	D Number	Xumber	Cal/cm		.minute; w/m	6 ;

2	.minute; w/m	E(B-S')+S' ! ²Cal/cm²	No. 11 of 2014; Law amending * Tel^F84-8-í °
2	.minute; w/m	z ²Cal/cm²	⁴ .X , i , X • Briefing signed on February 18, 2025 and 20 billion VND at the rate of 4.9%/year, and thus, Commercial Bank A ) measured directly with a pyranometer.
2	.minute; w/m	E(B-S')+S' ! ²Cal/cm²	Bd=B+Rn-Q Measured directly with a pyrgeometer (thermal radiometer). cs
2	.minute; w/m	Measured directly with a pyranometer.²Horizontal diffuse radiation²	Calorie on square centimeter minute; watt/square meter
2	.minute; w/m	Measured directly with a pyranometer.²Horizontal diffuse radiation²	.minute; w/m
2	Measured directly with	Measured directly with a pyranometer.²pyr²	geometer (thermal radiometer) Anbedo An

5	/4. =Rn/Q	/4. =Rn/Q	Total radiation	Number	Number	6	2	Percentage	%	Cal/cm
6	.minute; w m	.minute; w m	Article 24	Number	Number	7	2	.minute; w/m	ạ + ²ĩọ²	0í Time difference At
7	The time difference is looked up in a table according to regulations.	The time difference is looked up in a table according to regulations.	Sun height	Number	Number	2	0			3^ Sky color
10	Sky color	Sky color	ho	Number	Number	4	2	Degree	°	+
11	Encoded numerically from 1-4	Sun disk status		NUMBER	Number	1	0			7. -Encoded with a two-digit number
12	Sun disk status encoded according to a code number from 0-9 depending on its characteristics. Based on the sun disk status, the types of radiation will be measured and calculated according to regulations.	Sun disk status encoded according to a code number from 0-9 depending on its characteristics. Based on the sun disk status, the types of radiation will be measured and calculated according to regulations.		Number	Number	2	0			Atmospheric clarity
13	Depends on solar radiation intensity and sun height.	Depends on solar radiation intensity and sun height.		Number	Number	1	0			Atmospheric turbidity
14	Depends on solar radiation intensity and sun height.		t,	Number	Number	5	2			7. Ozone, ultraviolet radiation data information
15	Position		T	Number	Number	5	2			Ozone
7. Ozone data and ultraviolet radiation information
Serial number	Classification of information		Code	Data type		Field length	Decimal places	Latitude		Description
Serial number	Object of information	Information component	Code	b. For Secondary Supplementary Classes:	English	Field length	Decimal places	Name	Abbreviation	Description
1	0 ozone	Meteorological conditions		Character		150				Characteristics of the instrument: visibility, wind when conducting observations.

Cloud type		Character	Character	50				Cloud cover at the time of observation coded according to cloud type. /6. The code for that cloud type.
Sky color	ho	Number	Number	3	1	Degree	°	Sun elevation calculated at the time of obtaining values J1, J2 from the pre-calculated table.
Type of observation	0 and z	Character	Character	1				Classified by symbol: 0: direct sunlight observation; Z: observation through sky diffuse radiation.
Light intensity according to film I	J1	Number	Number			Microampere	μA	Á According to the pointer value on the Microampere meter.
Light intensity according to film II	J2	Number	Number			Microampere	μA	According to the pointer value on the Microampere meter. Ế
Sensitivity	n	NUMBER	Number
Salinity	T	Number	Number	4	1	Degrees Celsius	°C	Temperature of the measuring instrument
Temperature coefficient	K,	Number	Number	5	3			This temperature coefficient is determined based on temperature.
Cloud type coefficient	ảo_m	Number	Number					This is a coefficient dependent on the cloud type (optical transparency of the cloud layer), this coefficient is found from the prescribed cloud type coefficient table.
Total ozone measured by direct sunlight	Xo	Number	Number		1	Unit Dobson	DU	Using the sun diagram based on values J1/J2*Kt and the sun elevation, we will find the total ozone.

Total ozone measured by sky diffuse radiation	X₂	NUMBER	Number	1	Unit Dobson	Iu	1 Using the zenith sky diagram, find the total ozone with the value (J1/J2)KtK and the sun elevation._m and solar elevation angle. ° ep
Total ozone of the measurement	Xi	NUMBER	Number	1	Unit Dobson	DU	The average total ozone of each pair of measurements.
Total ozone of the observation period	X		Number	1	Unit Dobson	DU	The average total ozone of the measurements before the observation period.
Number of observation periods using direct sunlight	n₀	number	Number	0			© 1
Number of observation periods using sky diffuse radiation	n₂	number	Number	0

		Average daily total ozone measured by direct sunlight	• C'	NUMBER	Number
		Average daily total ozone measured by direct sunlight		NUMBER	Number
		Average daily total ozone measured by sky diffuse radiation	N \|\|\|_{) measured directly with a pyranometer.}	number	Number
2	Ultraviolet Radiation (UV)	Intensity of radiation in the UV-B region	Qb	number	Number
		Intensity of radiation in the UV-A region	Qa	NUMBER	Number
		Intensity of erythemal radiation	Qea, Qeb	Number	Number
		Calibration number	ảo_iaKib	Number

				£
1	Unit Dobson	DU	* Tel: +84-8-3930 3279 * www 2 o.. z—\ p t, X Ó
1	Unit Dobson	DU	đượ N \|\|\|_{) measured directly with a pyranometer.}=(n_{) measured directly with a pyranometer.})X_{) measured directly with a pyranometer.}
3	Watt/square meter minute	W/m²²minute	(UV-B is the ultraviolet region in the visible spectrum: 280-315 nm).
3	Watt/square meter minute	W/m²²minute	(UV-A is the ultraviolet region in the visible spectrum: 315-400 nm).
1		W/m²²minute	Intensity of erythemal radiation in the UV-A and UV-B regions
4 ¹			Calibration coefficients corresponding to the UV-A and UV-B spectral regions (found in the calibration coefficient table).

		Energy attenuation coefficient	ROib, ROia	number	Number		2			XII _x The energy attenuation coefficient in the UV-A and UV-B regions depends on the sun's elevation and can be found in the energy attenuation coefficient table. The energy attenuation coefficient in the UV-A and UV-B regions is found in the energy attenuation coefficient table. Erythemal radiation energy attenuation coefficient in the UV-A region *4: _**
		Reb, Rea B	The attenuation coefficient of erythemal radiation in the UV-A and UV-B regions.	Number	Number		3			O' ° _{on Month Day Year} reduction in energy of ultraviolet radiation in the UV-A and UV-B regions. •4 +
		Instrument temperature coefficient	ỢTol, ỢTo3	Number	Number		2			s This temperature coefficient depends on the instrument temperature and the type of light source.
		Light intensity	Jl, J3	Number	Number		1	Microampere	μA	These values are obtained from the readings on the Microampere meter.
		Optimal time	Sun height	Number	Number		1	Minutes		The optimal time during which the human body's skin can withstand the current level of ultraviolet radiation exposure while remaining stationary outdoors.
8. Radio sounding data
Serial number	Classification of information		Code	Data type		Length	Decimal places	Unit		Description
Serial number	Object of information	Information component	Code	b. For Secondary Supplementary Classes:	English	Length	Decimal places	Name	Abbreviation	Description
	Thermal, humidity, and wind characteristics are selected to represent special properties in the variation of temperature, humidity, wind speed, and direction with height.
	Atmospheric pressure	Atmospheric pressure	t,	Number	Number		1	Hectopascal hPa		Standard isobaric surfaces: 1000, 900, 850, 800, 700, 600, 500, 400, 350, 300, 250, 200, 150, 100, 70, 50, 40, 30, 20, 15, 10, 5 (mb); At these isobaric surfaces, values of height (H), temperature (T), humidity (U), and wind must be determined. Degrees Celsius

2	Salinity	Salinity	T	Number	Number		1	Temperature characteristic points include: surface level, end of observation, levels where sudden breaks in the temperature curve occur (e.g., start and end of an inversion layer or isothermal layer, or points where the temperature gradient sharply increases or decreases).	°C	2 Humidity characteristic points: lower limit of the layer with a humidity value of 100%, sudden breaks in the humidity curve meeting the standard deviation criteria: more than 15% difference from the adjacent value.
4	Moisture content	Moisture content	u	Number	Number		0	Percentage	%	The first degree between the selected humidity characteristic point below and the planned humidity characteristic point above. 1 Characteristic points: ground-level wind speed at shadow release time, at 100 hPa, end of observation period, limits of separated segments and calm layers, point of maximum wind speed and extreme.
5	Wind	Wind direction	dd	Character	Character	万分之一	0		OF	Geopotential height
		Wind speed	ff	Number	Number	5	0	Meter/second	m/s
6	Determined according to standard isobaric surfaces.	Determined according to standard isobaric surfaces.	H	Number	Number		0	Meter	m	Grams per kilogram
7	g/kg	g/kg	F	Number	Number		2	The ratio of the mass of water vapor to the mass of dry air.	Geopotential temperature	Kelvin
	The temperature obtained when molecules move along the thermal path from the starting point to the 1000 mb level.	The temperature obtained when molecules move along the thermal path from the starting point to the 1000 mb level.	9	Number	Number		1	Pseudoadiabatic geopotential temperature	ảo	Ge
8		Number	The temperature that would be obtained if all the water vapor condensed and then the resulting dry air was brought adiabatically back to the standard pressure of 1000 mb.	NUMBER	Virtual geopotential temperature		1	Pseudoadiabatic geopotential temperature	ảo	0V

9. Upper air wind data (Pilot)

Data type

Number

Pseudoadiabatic geopotential temperature

ảo

“35

Unit

Serial number

Classification of information

Code

Wind aloft

Field length

Decimal places

didi

ốn ... tại: ...

Description

(*>

Object of information

Information component

Decade

English

Belgium

Name

Abbreviation

Wind above

the effectiveness and efficiency of implementing policies and laws on fire prevention and fighting.

Wind direction

Wind direction and speed at specific heights.

Character

Meters per second, kilometers per hour

rọ

m/s,

Wind speed

Number

10. Hydro-meteorological and environmental survey data

10.1. Hydrological survey data

Data type

Length

Serial number

Classification of information

Code

Object of information

Length of day

Decimal places

Unit

Description

Object of information

Information component

b. For Secondary Supplementary Classes:

English

Name

Abbreviation

Article 1. Investigate and confirm flood marks

H Lu Field Survey

NUMBER

Number

Centimeter

Part Flood mark is the imprint left on the surface of an object such as power poles, walls... at locations where floods have passed through.

Article 2. Investigate the time of peak flood occurrence

t Flood investigation

Number

Date/Time

Hour, minute

h, min

Investigate the time of flood occurrence by finding the relationship between the time of peak flood occurrence and the time of the event.

Article 3. General investigation of river morphology

Character

Investigate changes in the riverbed over time since the start of the flood investigation.

0.2. Survey and observation data information

Serial number

Classification of information

Code

Data type

Length

Decimal places

Unit

Description

Object of information

Information component

Vietnamese English

Sun radiation

Name

Abbreviation

1	Watt/square meter			Number	Number	6	2	W/m²	Transparency of seawater²	*
2	>Value			Number	Number	3	0	Meter	1	F Value 10.3. Survey and observation data information on marine environment
Object of information										1 1 4
Serial number	Classification of information		Code	Data type		Field length	Decimal places	Unit		+ Description
Serial number	Ocean current	Information component	Code	b. For Secondary Supplementary Classes:	English	Field length	Decimal places	Name	Abbreviation	+ Description
1	16 units	Guidance		Character	Character	0 3		According to 16 compass directions	5 characteristic flow described by direction and speed.	■■■	10.4. Survey and observation data information on marine environmental quality
1	16 units	Velocity	V	Number	Number	4	1	Meter/second	n	£
Object of information
Serial number	Classification of information		Code	Data type		Field length	Decimal places	Unit		Description
Serial number	Surface oil film thickness	Information component	Code	b. For Secondary Supplementary Classes:	English	Field length	Decimal places	Name	Abbreviation	Description
1	Heavy metals			Number	Number		3	Milligram/liter	mg/l
2	Cadmium content	Lead content	Cd	Number	Number	6	4	Milligram/liter	mg/l
		Copper content	Cu	Number	Number	5	3	Milligram/liter	mg/l
		Iron content	Lead	Number	Number	5	3	Milligram/liter	mg/l
		Value	Fe	Number	_{Zinc content} Value	^{5 3}		Milligram/liter	mg/l	■
		Milligram/liter: mg/L	- Zn	Value		5	3	mg/L

		Arsenic content	Arsenic	Number	Number	5	3	Milligram/liter	Iron content	H
		Mercury content	Hg	NUMBER	Number	6	4	Milligram/liter	mg/l	*
		Manganese content	Mn	Number	Number	5	3	Milligram/liter	mg/l	Value
		Nutrient salts	Fe	Number	Number	5	3	Milligram/liter	mg/l	Phosphate salt 1
		Nickel content	Ni	Number	Number	5	3	Milligram/liter	mg/l	Value
3	Nitrite	Nitrate	PO₄³'	Number	Number	5	2	Milligram	mg	Value
		Ammonia	no₂’	Number	Number	5	3	Milligram	mg	ppm
		Silicate	no₃-	Code	Number	5	2	Milligram	mg	Marine ecology
		Floating plants	ealth₄⁺	NUMBER	Number	5	2	Milligram	mg
		Milliliter/cubic meter	≥ 44%, Al₃²'	Number	Number	5	3	Milligram	mg
4	ml/m³	Including tropical species widely distributed.		Number	Number	5	3	Floating animals	Milligram/cubic meter³	Bottom organisms
		STRUCTURE AND INFORMATION FORMAT OF SUPER DATA MONITORING, INVESTIGATION, SURVEY ON WEATHER, HYDROLOGY, MARINE ENVIRONMENT, WATER ENVIRONMENT AND AIR QUALITY		Number	Number	5	3	(Issued pursuant to Circular No. 40/TT-BTNMT dated October 23, 2017 on technical regulations for organizing data on monitoring, investigation, survey on weather, hydrology, marine environment, water environment and air quality)	mg/m³
		Groups of data constituting super data on monitoring, investigation, survey on weather, hydrology, marine environment, water environment and air quality.		NUMBER	Number	5	3	(Issued pursuant to Circular No. 40/TT-BTNMT dated October 23, 2017 on technical regulations for organizing data on monitoring, investigation, survey on weather, hydrology, marine environment, water environment and air quality)	mg/m³

APPENDIX 02

STRUCTURE AND TYPE OF INFORMATION OF SUPER DATA FOR MONITORING, SURVEYING, AND ENVIRONMENTAL STUDIES,
Content, structure and information format of super data on monitoring, investigation, survey on weather, hydrology, marine environment, water environment and air quality.

(Pursuant to Circular No. 40/TT-BTNMT dated October 23, 2017 on technical standards for database management related to monitoring, surveying, and environmental studies)
Classification of information Code Information value

Description

Title

Title

Character string ¹ CharacterString Name of agency, unit, organization conducting monitoring, investigation, survey on weather, hydrology, marine environment, water environment and air quality ^: ' '' ■ Main topic	Main_topic	Basic data on monitoring, investigation, survey on weather, hydrology, marine environment, water environment and air quality must be described, including sub-topics such as meteorological, hydrological, marine environmental, water environmental and air quality data, ozone - ultraviolet radiation		1 . — ’ —" . -1 Main topic of meteorological data Main_topic_weather Data on monitoring, investigation, survey on weather Main topic of hydrological data
Main_topic_hydrology	Data on monitoring, investigation, survey on hydrology	Main topic of marine environmental data	Main_topic_marine	Data on monitoring, investigation, survey on marine environment
Main topic of water and air environmental data	Main_topic_environment	Main topic of marine environmental data	Main_topic_marine	Character string
Data on monitoring, investigation, survey on water and air environment	Water and air environment.	Main topic of marine environmental data	Main_topic_marine	1. Group of content information
Classification level of information	Code	Main topic of marine environmental data	Main_topic_marine	Information code
Information value	Description	Main topic of marine environmental data	Main_topic_marine	Title
Character string	CharacterString Main topic of ozone - ultraviolet radiation data	Main_topic_ozone_uv	Main_topic_marine	Data on monitoring, investigation, survey on ozone - ultraviolet radiation

Summary

Summary of basic information of data on monitoring, investigation, survey on weather, hydrology, marine environment, water environment and air quality, ozone - ultraviolet radiation

Title

g
Summary of data on monitoring, investigation, survey on weather Summary_weather0. ■ /.■■■• ‘11	Brief summary of data on monitoring, investigation, survey on weather	Summary of data on monitoring, investigation, survey on hydrology Summary_hydrology		^! Brief summary of data on monitoring, investigation, survey on hydrology ^>;Summary of data on monitoring, investigation, survey on marine environment Summary_marine \|\|\|^P’ ■' "’?/< • ■ Brief summary of data on monitoring, investigation, survey on marine environment Summary of data on monitoring, investigation, survey on water and air environment Summary_environment⁵ << Brief summary of data on monitoring, investigation, survey on water and air environment
Summary of data on monitoring, investigation, survey on ozone - ultraviolet radiation	Summary_ozone_uv	Main topic of marine environmental data	Main_topic_marine	Brief summary of data on monitoring, investigation, survey on ozone - ultraviolet radiation^; Organization building monitoring, investigation, survey data on weather, hydrology, marine environment, water environment and air quality, ozone - ultraviolet radiation.
Code		Main topic of marine environmental data	Main_topic_marine	Address
Address	Code	Main topic of marine environmental data	Main_topic_marine	Information code Information value
Description	Name of agency, unit, organization related to monitoring, investigation, survey on weather, hydrology, marine environment, water environment and air quality, ozone - ultraviolet radiation.	Main topic of marine environmental data	Main_topic_marine	Representative
Representative	Name of person representing the agency, unit, organization related to monitoring, investigation, survey on weather, hydrology, marine environment, water environment and air quality, ozone - ultraviolet radiation.	Main topic of marine environmental data	Main_topic_marine	Position
Position	Character string	Main topic of marine environmental data	Main_topic_marine	Role of agency, unit, organization related to monitoring, investigation, survey on weather, hydrology, marine environment, water environment and air quality, ozone - ultraviolet radiation.
Contact information	Direct address	Main topic of marine environmental data	Main_topic_marine	Direct address

Code
P^:Information code Information value	Description	Address^/; Address^?ỹ Code Information code		«* -= 1 H Information value ' 4 • > ■" . Description Website description^; = ■■ ^{Additional website description} Contact time
Unit Name	Web contact time	Main topic of marine environmental data	Main_topic_marine	Time available for contact through the main website.
Contact method	Contact_method	Main topic of marine environmental data	Main_topic_marine	Name of representative entity for agencies, units, organizations related to monitoring, surveying, and environmental studies on meteorology, hydrology, marine hydrology, water and air environment, ozone-ultraviolet radiation.
Position	Position	Main topic of marine environmental data	Main_topic_marine	Position of the representative for agencies, units, organizations related to monitoring, surveying, and environmental studies on meteorology, hydrology, marine hydrology, water and air environment, ozone-ultraviolet radiation.
Role	Role	Character string	Main_topic_marine	Role of agencies, units, organizations related to monitoring, surveying, and environmental studies on meteorology, hydrology, marine hydrology, water and air environment, ozone-ultraviolet radiation.
Contact information
Direct address

âỉBBnan^âp thôngTỉnw«Ịf	1 Identifier contact information 1	^; ;-ỆỆKÍ^^iẩ\|^níỆỊf^; ■ ?■ • > : f Si ■		■ Ị --Ci <• ' '1-,
Currency Exchange Agent No. 3	Address	Main topic of marine environmental data	Main_topic_marine	Address of the agency, unit, organization related to monitoring, surveying, and environmental studies on meteorology, hydrology, marine hydrology, water and air environment, ozone-ultraviolet radiation. ¹ à khôn^Ị hí, ô dôn - bức xạ cực tím.
Description	Motaweb	Main topic of marine environmental data	Main_topic_marine	Additional description about the website of the agency, unit, organization related to monitoring, surveying, and environmental studies on meteorology, hydrology, marine hydrology, water and air environment, ozone-ultraviolet radiation.
Time available for contact	Web contact time	Main topic of marine environmental data	Main_topic_marine	Time available for contact through the main website.
Contact person	Contact person	Main topic of marine environmental data	Main_topic_marine	Additional guidelines to help individuals in need contact relevant agencies, units, organizations related to meteorological, hydrological, marine, water and air environment, ozone-ultraviolet radiation observation, investigation, and survey data.
Telephone	Telephone	CharacterString	Main_topic_marine	Contact telephone number of agencies, units, organizations related to meteorological, hydrological, marine, water and air environment, ozone-ultraviolet radiation observation, investigation, and survey data.

^: XfPKẩru^ấWỉiong Information :	Information symbol	Value type		Ty *íT •cẾ Description ■ •V;.; ■ z V■ ■ T . /* ■ .»■■■ - 'rỉl í V: y ■ • ' ’• ' ./ ¹V y: ■■■•■r>'ST Administrative address ^: • ' ' ■**
0 ro àx				Detailed address
Diachichitiet	house number, alley, street, ward (commune, town). 00 +	Main topic of marine environmental data	Main_topic_marine	District
District	Province name, city district, provincial city.	Main topic of marine environmental data	Main_topic_marine	Province ^H
Tinh	Province name, centrally governed city.	Main topic of marine environmental data	Main_topic_marine	Country
Quocgia	Vietnam	Main topic of marine environmental data	Main_topic_marine	Email Additional website description
Thudientu	Email address.	Main topic of marine environmental data	Main_topic_marine	Data management unit for meteorological, hydrological, marine, water and air environment, ozone-ultraviolet radiation observation, investigation, and survey.
Unit name
Name of agency, unit, organization managing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.	Web contact time	Main_topic_ozone_uv	Main_topic_marine	Representative
Contact method	Name of representative for the agency, unit, organization managing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.	Main_topic_ozone_uv	Main_topic_marine	bí . 7 "’b 7^"? .< ;>

'';.ỉ* '';.ỉ*'' Á'. ’ - ' • '"' Vỉ/É’"'’ ’ ' "4* Classification of information_F '	7 Information symbol	…111 .ụ; !•” '■ > > 'ị,* V áiiíB;' '■ ->■ Value type^: S/H ■ -; 5 •. ®ỉỉ		V • 2' , Description-MEK . 'i • biv'.7®5§ S^S7ắ‘7 "1 ■ , ®73ẵv7ỉ-'‘ 'íị/ỉ -■CĩCM ■’*- 7,-'/ĩ<‘ỉ.s 'y ■■ 1' • v
				and air, ozone-ultraviolet radiation. ■4 ủfì
Position	Position	Main topic of marine environmental data	Main_topic_marine	Position of representative for the agency, unit, organization managing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.
Role	Role	Main topic of marine environmental data	Main_topic_marine	Role dq [uan, unit, organization managing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.
Contact information
Direct address
Currency Exchange Agent No. 3	Address	Character string	Main_topic_marine	Web address of the agency, unit, organization managing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.
Description	Motavveb	Main topic of marine environmental data	Main_topic_marine	Additional description of the web page of the agency, unit, organization managing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.

and air, ozone-ultraviolet radiation.
Information classification	- _?Information symbol	Value type		•./ -T ■ Description ■ - ’■ ;; - i-' . TTv ’ ■ ■ .
Contact time	Thoigianlienhexveb	Main topic of marine environmental data	Main_topic_marine	Time available for contact through the main website.
Contact person	Contact person	Character string	Main_topic_marine	Additional guidelines to help individuals in need contact agencies, units, organizations managing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.
Telephone	Telephone	Main topic of marine environmental data	Main_topic_marine	Contact telephone number of agencies, units, organizations managing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.
0 ro àx
Diachichitiet	house number, alley, street, ward (commune, town). 00 +	Main topic of marine environmental data	Main_topic_marine	House number, alley, street, ward (commune, town).
District	Province name, city district, provincial city.	Main topic of marine environmental data	Main_topic_marine	District name, county, city district, provincial city.
Province name, centrally governed city.	Province name, centrally governed city.	CharacterString ^&		Province name, centrally governed city.
Country	Vietnam	CharacterString	Main_topic_marine	Email

Additional website description Vi?.'’ *.;;?■??•' ^hân’cắpWỒ^TỔn f ??Ệ\| ?■’■ '■^{-i ;} $>: ' ■'/' ■- ■/ / "7** ■ ''-.C-: . ■ ■'.••• ... ■■■ '..	P iInformation symbol -‘'vỲthpng«\|in.; ■ V	\|Value type ■ -<		^:.^;ẵsẼẩWí 9 434; '• víivồ.SÍS-ỉ-.-ẩồ ’ v4' - • ■ ị -
Thudientu	Email address.	Main topic of marine environmental data	Main_topic_marine	! Email address. * -4 âẽ
Data distribution unit for meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.				*^FSoft Tel: +**
Unit Name	Web contact time	Main topic of marine environmental data	Main_topic_marine	Name of agency, unit, organization distributing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.
Contact method	Contact_method	Main topic of marine environmental data	Main_topic_marine	Name of representative for the agency, unit, organization distributing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.
Position	Position	Main topic of marine environmental data	Main_topic_marine	Position of representative for the agency, unit, organization distributing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.
Role	Role	Main topic of marine environmental data	Main_topic_marine	Role of the agency, unit, organization distributing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.

^F Information classification	*Information symbol ■ ■ A ■ information ' • '.;■■■ .<-ỹC* ỆỆ**	Value type \ - 'Ị-; -... '1 ^y -ií í;?		■ …Description ‘ ■ . . +++»< .' >…■ ■■ ■ .; ĩyc*
Contact information				3930 3
Direct address				+84-8-
Currency Exchange Agent No. 3	Address	Main topic of marine environmental data	Main_topic_marine	Web address of the agency, unit, organization distributing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.
Description	Motaweb	Character string	Main_topic_marine	•> 1 /V •> _L • Ẳ Additional description of the web page of the agency, unit, organization distributing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.
Time available for contact	Web contact time	Main topic of marine environmental data	Main_topic_marine	Time available for contact through the main website.
Contact person	Contact person	Character string	Main_topic_marine	Additional guidelines to help individuals in need contact agencies, units, organizations distributing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.
Telephone	Telephone	Main_topic_ozone_uv	Main_topic_marine	Contact telephone number of agencies, units, organizations managing meteorological, hydrological, marine, water and air environment observation, investigation, and survey data.

■ .-V-h ■ ’L;, Information classification f 0	Information symbol	X• Ẩ • , Value type ’ ^ỉOỉí ■'ãĩỉĩy ■ ■ L-TLÌ \|\|\|		SỆ®.', ' gv ẵb® : ' d ‘V . T- - ■■ ■■ §•: ■''' c < ■ _;
Administrative address				1 1 ■4 ũẽ
Diachichitiet	house number, alley, street, ward (commune, town). 00 +	Main topic of marine environmental data	Main_topic_marine	+ house number, alley, street, ward (commune, town).
District	Province name, city district, provincial city.	Main topic of marine environmental data	Main_topic_marine	District name, county, city district, provincial city.
Tinh	Province name, centrally governed city.	Main topic of marine environmental data	Main_topic_marine	Province name, centrally governed city.
Quocgia	Vietnam	Main topic of marine environmental data	Main_topic_marine	Email
Thudientu	Email address.	Main topic of marine environmental data	Main_topic_marine	■<# Data management unit for meteorological, hydrological, marine, water and air environment, ozone-ultraviolet radiation observation, investigation, and survey.
Type	Type	Main topic of marine environmental data	Main_topic_marine	Type of meteorological, hydrological, marine, water and air environment observation, investigation, and survey database.

**2. Copyright information group.**
;Ị^âp'Cap'WỔngỉtinặ — 'QợCQQy -. . . 7/? . . .	Information symbol	*ỉ' ^{nh cơ} . 7' 7 ■\|3Ệ-2 '- 'Value type' ’• ^s ' ■ , ■■ '**		■ ; .'ý' C: -.7 7/ ... - . • -• -SC -71. *>30 32-79 1**	Description , - - 7 .7 ' ' ' ' ' 7 -7.-Ị1'ị ■ > - '7 _F-
Author	Author	Main topic of marine environmental data	Main_topic_marine	Leading unit for investigation, survey of water and air environment	Establish monitoring databases for meteorological, hydrological, marine, environmental water, air, ozone - ultraviolet radiation ĩ, ozone-ultraviolet radiation
Co-author	Co-author	Main topic of marine environmental data	Main_topic_marine	Units participating in cooperation to establish monitoring databases: Article 1, surveying meteorology, hydrology, marine, environmental water and air, ozone - ultraviolet radiation
Publisher	Publisher	Main topic of marine environmental data	Main_topic_marine	z íí z X Unit responsible for managing the digitized monitoring, investigation, surveying meteorology, hydrology, marine, environmental water and air, ozone - ultraviolet radiation databases
Copyright	Copyright	Main topic of marine environmental data	Main_topic_marine	Access constraints, permission required for data usage (Access rights, view general information)

Title

^; Information security	Current status	• ■./■''í 'L> ^: Data type		Text
Date	Day month	Date format	DateTime	The date of the decision approving the first version of the digitized monitoring, investigation, surveying meteorology, hydrology, marine, environmental water and air, ozone - ultraviolet radiation database and the update period
Location	Location	Character string	Main_topic_marine	0 X ~ Physical location for storing and retaining the monitoring, investigation, surveying meteorology, hydrology, marine, environmental water and air, ozone - ultraviolet radiation databases
Link	Link	Main topic of marine environmental data	Main_topic_marine	Homepage URL address of the unit owning and website containing the monitoring, investigation, surveying meteorology, hydrology, marine, environmental water and air, ozone - ultraviolet radiation databases
Identifier	Identifier	Main topic of marine environmental data	Main_topic_marine	Information on document identifiers, references sources, character strings defining each type of monitoring, investigation, surveying meteorology, hydrology, marine, environmental water and air, ozone - ultraviolet radiation resources
Language	Language	Main_topic_ozone_uv	Main_topic_marine	Using Vietnamese language

3. Group of explanatory information.

APPENDIX 03

CATEGORY AND LEVEL OF CONTENT QUALITY CHECK, STRUCTURE, INFORMATION DATA TYPE
STRUCTURE, TYPE OF INFORMATION

(Issued pursuant to Circular No. 40/TT-BTNMT dated October 23, 2017 stipulating technical standards for monitoring, investigation, surveying meteorology, hydrology, marine, environmental air and water data)
technical standards for database management related to monitoring, surveying, and environmental studies on meteorology, hydrology, marine
hydrology, air and water environment)

Serial number	Inspection items	Unit of measurement	Check level %
1	Check content, structure, and information data type KTTV
1.1	Check name of information object	Field of information	100
1.2	Check name of information component	Field of information	100
1.3	Check information code	Field of information	100
1.4	Check type and length of information data field	Field of information	50
1.5	Check unit of information data field	Field of information	100
1.6	Check accuracy of information data field	Field of information	100
2	Check completeness of KTTV information data
2.1	Check number of information fields	Field of information	100
2.2	Check completeness of information component data content	Object attribute	100
3	Check application schema for exchange, distribution, and updating KTTV data and metadata
3.1	Check XML application schema format	Recipient	100
3.2	Check XML data conformity with standard application schema	Recipient	100

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