In the summer of 2001, the 500hPa geopotential height anomaly was positive in the Eurasia, and the positive center was over Lake Baikal.

• 欧亚地区夏季50 0hPa位势高度距平场上中高纬从西到东呈现为“ - +-”分布形式 ,贝加尔湖地区为正距平中心 ;