Analysis of the advantages of anemometers compared with traditional manual observation
In the process of automating atmospheric detection, parallel observations for a certain period of time are required under unified climate data archiving and management principles, and the quality of the observation data is evaluated to ensure the uniformity of historical data. Among the many reasons for the non-uniformity of climate data series , the change of the anemometer is an important factor, the automatic observation value is 0.46m.s-1 higher on average than the manual observation value; compared with the automatic observation value and the manual observation value, the consistent one accounts for 5.52% of the total number of effective comparison samples, and the greater one accounts for 5.52% of the total effective comparison sample number. 72.42%.
In the process of automating atmospheric detection, parallel observations for a certain period of time are required under unified climate data archiving and management principles, and the quality of the observation data is evaluated to ensure the uniformity of historical data. Among the many reasons for the non-uniformity of climate data series , the change of the anemometer is an important factor, the automatic observation value is 0.46m.s-1 higher on average than the manual observation value; compared with the automatic observation value and the manual observation value, the consistent one accounts for 5.52% of the total number of effective comparison samples, and the greater one accounts for 5.52% of the total effective comparison sample number. 72.42%.
Both the anemometer and the manual at the reference climate station conduct regular observations 24 times a day. The automatic station responds quickly when used. The anemometer is started for measurement. The anemometer is connected manually. The anemometer and the manual observation sensor are installed in the same observation field, arranged in rows from east to west, with an east-west distance of 20m from each other. The height of the observation field is 10-12m. on a wind pole or wind tower.
Statistics on the difference between the automatic measurement and manual observation of each wind speed item by the anemometer show that the automatic observation value of each wind speed item is on average higher than the manual observation value, and the higher value is between 0.06-0.46m.s-1 , within the deviation range of wind speed measurement accuracy; wind direction and anemometer observation values are greater than manual observation values in most observation comparison samples, and the proportion of anemometer and manual observation wind speed values are consistent or smaller than that is relatively low. This is an important comparative test for the recognition of accuracy in the application and promotion of anemometers.
