QING SEN LI 1) YU MEI JIN 1) ZHI CHENG MIAO 1) WEN ZHONG JIA 1) GUI CAI JIANG 2) 1) Zhangjiakou Meteorological Observatory of Hebei Province,Zhangjiakou 075000,China 2) Forth Middle School of Zhangjiakou
Abstract:
Keywords:
strong earthquake in Zhangbei area especial drought areas unusual warm areas largest snowfall inverted trough of low pressure