长安风廓线雷达测风资料的可靠性验证

Reliability Validation of Horizontal Wind Data Derived from Wind Profile Radar at Chang'an Station of Shaanxi

利用2014—2015年陕西西安泾河站L波段探空数据和ERA-Interim再分析资料,与同期长安站风廓线雷达数据进行对比分析,确定风廓线雷达数据的可靠性。结果显示风廓线雷达资料与L波段探空资料、ERA-interim再分析资料整体上相关性较好,相关系数随高度的增高而增大,在1 500~2 500 m之间达到显著相关。不同时刻数据对比结果显示风廓线雷达白天观测结果整体上优于夜间。从平均状态来看,风廓线雷达在描述平均态过程中与探空和再分析资料基本一致,即风廓线雷达数据可用于实际应用和研究。

The reliability of the wind profile radar data at Chang＇an station was tested through the comparison between the wind profile radar products and the corresponding datasets of horizontal wind observation from the L-band sounding radar at Jinghe station of Shaanxi as well as the zonal and meridional winds from the ERA-interim reanalysis data during 2014-2015. The results show that the correlation coefficients between the wind profile radar data and the L-band sounding radar observations as well as the ERA-interim reanalysis data increased with the increase of height,when the height ranged from 1 500 to 2 500 m,the relation of the above three reached a significant correlation. The wind profiler radar observation results in daytime were better than those of the nighttime. The horizontal wind derived from wind profile radar was totally consistent with the L-band radar sounding radar observations and the ERA-interim reanalysis data in describing the mean processes. So the horizontal wind datasets derived from wind profile radar could be used in study and meteorological service.