Circulation Anomalies Pattern Causing the Persistent Drought in North China
引起华北地区夏季出现持续干旱的环流异常型

Due to the importance of persistent droughts in North China after 1977,the circulation anomalies pattern causing the persistent droughts in North China are analyzed by using observed data and ERA-40 reanalysis data.The analyzed results show that interdecadal variability of summer precipitation in China is very obvious.From 1977 to 2000,summer precipitation obviously decreased and the persistent droughts occurred in North China and the Yellow River basin.After 1977,a teleconncetion wave-train is opposite to ...