Abstract:This paper compares the wind data measured and obtained by two TWP3 and one LAP3000 wind profilers located in Jiading and Songjiang areas within Shanghai profiler network in the winter period from 28 October to 28 November 2010 and in the summer time from 1 to 3 July 31 2011 to those measured by Baoshan GFE(L) 1 sounding radar system during the corresponding periods. Furthermore, the wind data probed by two different types of profilers in Jiading area are also compared with each other. The amount of wind data samples obtained under the stable weather conditions for the comparisons between the two types of wind profilers are 71981 pairs, and the total samples comparison of two TWP3 and one LAP3000 profilers with the 〖JP2〗Baoshan GFE(L) 1 radar data are 6733, 7350 and 7013 pairs, respectively. The results indicate that the average wind speed standard deviations between the TWP3 and LAP3000 are 3.63 and 4.12 m·s-1 for the two correspording sampling periods above, respectively. The statistic average standard deviations of wind speed in the summer sampling period for Jiading TWP3, Songjiang TWP3, Jiading LAP3000 profilers compared separately to Baoshan GFE(L) 1 sounding radar data are 3.34, 3.37 and 4.03 m·s-1, sequentially. However, in the winter sampling time, those averaged values of the above said comparing events are 3.22, 3.22 and 3.42 m·s-1. According to the statistic curves, the standard deviation for the two TWP3 wind profilers is 2 to 4 m·s-1 when they are compared to Baoshan GFE(L) 1 sounding radar data. Obviously, the two TWP3 profilers have a better system performance than the LAP3000 profiler. A new concept of “efficient sounding height” related to wind profiler radars also is presented for the first time in the paper.