新疆夏季降水异常及其水汽输送特征

Analysis of Summer Precipitation Anomaly and the Feature of Circulation and Water Vapor Transport in Xinjiang

利用新疆103个测站46年6～8月降水量资料和NCEP/NCAR再分析资料,对46年来新疆夏季降水特征及其环流形势和水汽输送的特征进行了分析。结果表明:新疆夏季降水区较为集中,近46年来呈明显增多趋势,且造成新疆夏季降水异常的环流特征和水汽输送特征存在显著的差异。

Using the rainfall data of 103 observational stations in Xinjiang from June to August in 46 years and the NCEP/NCAR reanalysis data, the summer precipitation anomaly and the feature of circulation and water vapor transport in Xinjiang was studied. The results showed that the long-term trend of summer rainfall in Xinjiang was markedly increased, and the circulation and water vapor transport of summer precipitation anomaly were significantly different.