Survey on the Variation of the Total Atmospheric Ozone

14:48, 11/07/2024

The Ministry of Natural Resources and Environment issued Circular 45/2017/TT-BTNMT on October 23, 2017, specifying the regulations on surveying the variation of the total atmospheric ozone content.

Accordingly, Circular 45 stipulates that when surveying the variations of the total atmospheric ozone amount, the following tasks must be carried out:

Preparation:

The preparation includes the following tasks:

- Receive the assignment;- Develop an outline;- Collect relevant documents;- Provisionally select locations on the map;- Select survey measurement positions;- Draw the positioning diagram of the survey measurement points;- Contact local authorities regarding the survey measurement;- Prepare machines, equipment, tools, and materials for the survey measurement;- Install and check all types of machines and equipment before the survey measurement.

Detailed Survey Measurement:

- Measurement regime: perform continuous daily measurements, starting when the sun's altitude exceeds 15° in the morning and ending when the sun's altitude falls below 15° in the afternoon;- Calculate the total ozone amount;- Inspect and maintain the ozone meter after each survey day.

Dismantling and Cleaning up Tools, Survey Measurement Equipment, and Maintenance

Finalizing Documents:

Circular 45 stipulates that finalizing documents includes the following steps:

- Check and format results according to survey requirements;- Backup results to DVD and USB;- Write a summary report;- Hand over the survey results.

See details in Circular 45/2017/TT-BTNMT, effective from December 8, 2017.

- Thao Uyen -

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