三市一盟
三市一盟-
季极端降水阈值东南部地区大于西北部地区，内蒙古三市一盟地区的极端降水阈值四季中都是最小。
Seasonal extreme precipitation threshold of Southeastern Northeast China is larger than that of Northwestern region .
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年极端降水频数最多的地区集中在辽宁中部和东部、吉林东南部也较多；年极端降水事件发生较少地区在内蒙古三市一盟和吉林西部、黑龙江西部地区。
High Frequency of extreme precipitation concentrates in central and eastern parts of Liaoning , southeast Jilin ; extreme precipitation rarely occurs in Eastern Inner Mongolia , western Jilin and Liaoning .