Regulations on the collection and verification of radiation data in hydrological work in Vietnam

Regulations on the collection and verification of radiation data in hydrological work in Vietnam​ (Illustrative image)

Article 21 of the Regulations on economic-technical norms for meteorological and hydrological data work in Vietnam issued together with Circular 39/2013/TT-BTNMT stipulates the collection and verification of radiation data in hydrometeorological data work as follows:

Regarding data collection:

* Preparation work:

- Review the assigned tasks of the station network managed by the regional meteorological stations, including: Items (measurement factors), equipment, machinery of each station as a basis for cross-checking with the data sent by the stations;

- Arrange labor to receive data, remind the stations to submit data on time according to the current regulations.

* Data collection:

- Submission procedures:

- For data received directly: The data submission statistics with the confirmation of the regional hydrometeorological station. Compile data submission statistics and create a handover record according to the Hydrometeorological Data Archiving Regulations.

- For data sent by mail: Identify the postmark from the post office that sent the data; inventory the data and cross-check with the statistics provided by the regional hydrometeorological station. If discrepancies are discovered, promptly notify the station for immediate supplementation; confirm the data receipt document and send it back to the sending unit.

- Legal check: Opinions and signatures of the director of the regional hydrometeorological station (with seal).

- Volume check of data: Based on the assigned task regarding items (measurement factors), check the monthly report against the amount of data, determine the cause of any shortages.

Regarding data verification:

- Inspect the physical condition of the data;

- Check the adherence to procedures and regulations;

- Examine original logs;

- Inspect diagrams;

- Check reports;

- Verify the arithmetic of diagrams;

- Inspect calculation steps of each factor in SKT-12 number;

- Check correlation values from pre-calculated tables;

- Verify the consistency between weather phenomena and recorded data;

- Cross-check original logs with reports;

-  Inspect the correlation between total radiation and scattered radiation;

- Check calculation steps in reports.

Regarding assessment, classification of data quality, and data transfer:

* Quality assessment: After review, grade the quality of the documents. Combine with other operational aspects (facilities, measuring equipment, implementation of procedures and regulations) to evaluate the basic investigation quality for each station and for the entire station network.

* Report results: Report the basic investigation quality results of each regional station to the National Hydrometeorological Center and send to related agencies and units.

* Data transfer: After review and quality assessment of basic investigation, all data are sent to the Hydrometeorological Data Center for archiving and exploitation according to current regulations.

More details can be found in Circular 39/2013/TT-BTNMT, which comes into effect in Vietnam from December 15, 2013.

Le Vy

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