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中文摘要: 利用卫星观测的1966年11月～2000年12月北半球雪盖资料,研究了北半球、欧亚、北美和青藏高原雪盖的气候学特征及其变化趋势。通过对雪盖与印度季风的分析,得出:(1)欧亚冬季(12月～翌年3月)雪盖面积与印度季风降水(6～9月)呈反相关,并指出印度季风降水不仅受欧亚雪盖的影响,可能与暖水年有一定的联系。(2)青藏高原10、11月雪盖面积与次年印度季风爆发及降水关系较好,并提出可能的影响机制。
中文关键词: 雪盖，印度季风，青藏高原，降水
Abstract:Climatic characteristic and changes of snow cover over the Northern Hemisphere,Eurasian,North America and the Tibet Plateau are studied based on data of the Northern Hemisphere snow cover from 1966 to 2000.Correlation analysis shows that:(1) a inverse relationship between winter snow cover over Eurasia and monsoon rainfall over India,and Indian monsoon rainfall is not only influenced by snow cover over Eurasia,but also by ENSO.(2) there is an obvious relation between snow cover over the Tibet plateau during October to November and the following onset and rainfall of Indian monsoon,and the possible effective mechanism is proposed.
keywords: snow cover,Indian monsoon,precipitation
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引用文本：
杨向东,蒋尚城,2001.北半球雪盖的气候特征及与印度季风降水的关系[J].气象,27(12):8-12.
,2001.Climatic Characteristics of the Northern Hemisphere Snow Cover and Its Relation to Indian Monsoon Rainfall[J].Meteor Mon,27(12):8-12.
杨向东,蒋尚城,2001.北半球雪盖的气候特征及与印度季风降水的关系[J].气象,27(12):8-12.
,2001.Climatic Characteristics of the Northern Hemisphere Snow Cover and Its Relation to Indian Monsoon Rainfall[J].Meteor Mon,27(12):8-12.