摘要
全球变暖背景下,极端灾害事件增加的可能性不断增大,加强极端异常灾害事件成因机理的研究,对提高短期气候预测水平,增强我国防灾减灾能力有重要的理论意义和应用价值。我国主要气象灾害有:旱灾、洪涝(暴雨)、台风、高温酷暑、寒潮低温冷冻(雪灾、连阴雨、霜冻)、沙尘暴(大风)和风雹(冰雹、龙卷风)等。干旱和洪涝灾害分别占农作物总受灾面积的55%和27%,台风和冰雹占11%、其他占7%。本文对近年来有关干旱、洪涝(暴雨)、台风灾害成因机理方面的研究进展做初步小结。
Meteorological disasters in China include drought, flood, typhoon, ice storm, heavy fog and heavy snow etc. The precipitation over North China had decreased and the flooding events over the Yangtze River valley had increased from 1980 to 2000. Meantime the intensity of landing typhoon over southern China was stronger than normal. These severe meteorological disaster events occur every year in China and which often bring great economic loss. In this paper, the mechanism and circulation for severe drought, flood and landing typhoon over China are discussed.
出处
《大气科学》
CSCD
北大核心
2008年第4期815-825,共11页
Chinese Journal of Atmospheric Sciences
基金
国家自然科学基金资助项目40775037
中国科学院知识创新重要方向性项目KZCX3-SW-226
国家重点基础研究发展规划项目2004CB418303
关键词
气象灾害
旱灾
洪涝
强台风
环流异常
meteorological disaster
drought
flood
typhoon
anomalous circulation.
