江西科学Issue(4)：541-545,5.DOI:10.13990/j.issn1001-3679.2015.04.020
基于风廓线雷达的低空风切变特征及其对航空影响分析
Air Impact Analysis of Low-level Wind Shear Based on Wind Profile Radar
摘要
Abstract
Using the data collected by Yichun TWP3 wind profile radar in 2013 , we calculated the low-level wind shear for 8 different layesrs under 600 m. There are 95% low-level wind shear below mild level and 2% ~4% above medium level which affects the aviation safety. The probability of higher level wind shear increases with the hight,which can causes more then 100 serious wind shears above 300 m all the year. The serious level wind shear appears more in March to May because of the thunderstorm weather. We also find out that strong wind shear is associated with weather situation of low trough,low-rise shear,southwest jet stream,surface cold air and tropical cyclone system. The low-level wind shear appears with the southwest jet stream growing caused by the downlink of momen-tum. If there is thunderstorm weather,the tropical cyclone system always causes strong low-level wind shear along with the precipetation. Under the inffluece of surface cold air,low-level wind shear ap-pears in the frontal of warm and cold air,and reduces quickly after the precipetation.关键词
风廓线雷达/低空风切变/航空影响Key words
wind profile radar/low-level wind shear/air impact分类
天文与地球科学引用本文复制引用
何文,沈举鹏,赖诚,袁冬美,帅莉莉..基于风廓线雷达的低空风切变特征及其对航空影响分析[J].江西科学,2015,(4):541-545,5.基金项目
江西省气象局2014年面上科研项目“基于风廓线雷达的宜春边界层风场及低空风切变研究”。 （）
