青藏高原积雪对华北及我国东部降水影响研究  

A Study on the Impact of Snow Cover over the Tibetan Plateau on Precipitation in North China and Eastern China

作　　者：闫加海[1] 张冬峰[1] Yan Jiahai Zhang Dongfeng(Shanxi Climate Center, Taiyuan 030006, Chin)

机构地区：[1]山西省气候中心,太原030006

出　　处：《山西气象》2016年第3期24-32,共9页Shanxi Meteorological Quarterly

摘　　要：本文利用微波遥感雪深资料分析了青藏高原1979-2010年间积雪深度的时空变化特征，利用地面降水格点资料分析了华北地区1979-2010年间夏季降水的时空变化特征；此后根据高原冬春季积雪深度，选取典型多（少）雪年并合成分析了高原积雪及我国东部和华北地区夏季降水的空间分布特征，验证了高原多（少）雪，华北地区夏季少（多）水的既有结论，最后利用聚类分析方法，对高原冬春季积雪深度和华北地区夏季降水进行联合聚类，在高原多（少）雪华北地区夏季少（多）水基础上，提出了高原多（少）雪华北地区夏季多（少）水的新模态。Spatial and temporal variation characteristics of snow depth over Tibetan Plateau and summer precipitation over North China is analyzed by using the snow depth derived from microwave remote sensing dataset and a gridded monthly precipitation observation dataset during 1979 - 2010. The old conclusions that more / less snow cover over Tibetan Plateau in winter and spring leads to less / more precipitation over North China in the following summer in general are verified again, according to the analysis of relations between snow cover over Tibetan Plateau in selected typical more / less years and following summer precipitation over North China. Finally an new mode of more / less summer precipitation over North China is corresponding to the more / less snow cover over Tibetan Plateau is found based on the joint clustering analysis method.

关 键 词：青藏高原 积雪 华北 降水 多雪(少雪) 多水(少水) 

分 类 号：P426.615[天文地球—大气科学及气象学]