Analysis of Advantages of Anemometer Compared with Traditional Manual Observation
In the automatic process of atmospheric detection, parallel observations for a certain period of time are required. Under the unified principle of climate data archiving and management, the quality of observation data is evaluated to ensure the uniformity of historical data. Among the many reasons that lead to non-uniform climate data series , the change of the anemometer is an important factor, and the automatic value is 0.46m.s-1 higher than the manual observation value on average; compared with the manual observation value, the consistent value accounts for 5.52% of the total effective comparison samples, and the greater than the total effective comparison sample number 72.42%.
In the automatic process of atmospheric detection, parallel observations for a certain period of time are required. Under the unified principle of climate data archiving and management, the quality of observation data is evaluated to ensure the uniformity of historical data. Among the many reasons that lead to non-uniform climate data series , the change of the anemometer is an important factor, and the automatic value is 0.46m.s-1 higher than the manual observation value on average; compared with the manual observation value, the consistent value accounts for 5.52% of the total effective comparison samples, and the greater than the total effective comparison sample number 72.42%.
Both the anemometer at the reference climate station and manual observations are made 24 times a day. The automatic station responds quickly, starts the determination of the anemometer, and manually uses the electric anemometer. The anemometer and the manual observation sensor are respectively installed in the same observation field and arranged in rows from east to west, with a distance of 20m from east to west, and a height of 10-12m in the observation field. on wind masts or wind towers.
The anemometer compares the average difference between the automatic measurement and manual observation of each wind speed item. It can be seen that the automatic observation value of each wind speed item is higher than the manual observation value on average, and the higher value is between 0.06-0.46m.s-1 , which is within the deviation range of wind speed measurement accuracy; the observed value of wind direction and anemometer is greater than the manual observation value, which accounts for most of the observation comparison samples, and the proportion of the anemometer and manual observation wind speed value is consistent or smaller. This is an important comparative test for the recognition of accuracy in the application and promotion of anemometers
