There are five meteorological radiation observation stations in Golmud, Xining, Yushu, Guoluo, and Gangcha in Qinghai Province, which are located in the western, eastern, southern, and northwestern parts of Qinghai respectively, and they have certain representations. 97% of solar radiation energy is concentrated in the spectral range of 0.29~3.0Lm, which is called short-wave radiation. At present, the station mainly observes this part of solar radiation. Short-wave radiation observations are performed after sunrise and before sunset, and long-wave radiation observations are performed 24 hours a day. The radiation recorder is an important instrument for recording solar radiation and is an important application instrument for modern agriculture.
Check whether the daily values, daily totals, and daily extremum meet the general rules of change. If there is an abnormal change in the value, find out the reason and determine if the observation record is reliable. The total radiation table, direct radiation table, diffuse radiation table, and reflection radiation table are collected after sunrise and before sunset. The values ​​are positive values. The net radiation table 24h continuously collects data, usually positive during the day and negative during the night. value. The net radiation value is less than the total radiation value, and there is a certain rule between its change and total radiation. In special weather conditions, there are positive values ​​during the night and negative values ​​during the day. However, the positive and negative values ​​are very small at this time. In the event of such a situation, a specific analysis should be made based on the season and weather conditions at that time to determine whether the value can be used.
The radiation recorder checks whether the daily extreme of each radiation is inconsistent with the individual irradiance. It should be noted that the maximum value of each radiation should not be less than the irradiance on that day, and the minimum value of net radiation should not be greater than the irradiance on that day. Otherwise, the extreme value should be discarded, and the maximum (small) value should be picked from each time record of the day, and remarked in the remark column.
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