Abstract:

The hourly data of 6 routine meteorological elements at 2400 national automatic weather stations from 2006 to 2009 were compared, and the data were obtained by A files and Z files (two types of data transport methods). The results indicate that the hourly 2 min and 10 min wind data from two methods are significantly different because of the different artificial decisions for the wind direction when the wind speed is zero, while the other elements from the two methods have relatively small difference. For the different data in two methods, the rates of temperature, air pressure, relative humidity, precipitation, 2 min and 10 min winds within the instrumental error ranges are 23.27 %, 5.4 %, 23.19 %, 65.42 %, 12.93 % and14.16 %, respectively.

Key words: A files, Z files, Inconsistent rate