Variation Characteristics of Multiple Time Scales of Drought/Flood and Atmospheric Circulation Anomaly in Drought/Flood Years in the Three Gorges Area
三峡地区旱涝多时间尺度变化特征及旱涝年大气环流异常

The time series of drought and flood indices in the Three Gorges area are constructed according to Z-index system and the multiple time scales variation characteristics of the index series are analyzed by using Morlet wavelet transform method.The atmospheric circulation characteristics in the typical summer drought/flood years are investigated.It is found that the drought/flood variation is characterized by obvious interannual and interdecadal changes in the Three Gorges area.The drought index and the flood...