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China lies in East-Asian monsoon region,which is one of the well-known active monsoon zones around the world.Monsoon anomaly results in frequent natural disasters,such as drought,torrential rain and flood.In 1998,joint intensified observations for 4 major meteorological scientific experiments have been carried out over Chinese major monsoon affected areas.A number of valuable data have been obtained and some observational facts have come out after initial analysis.The present paper is to give an introduction to the 4 major meteorological scientific experiments conducted in 1998 in China.including its origin and scientific goals,implementation and planning,equipment and progress,and initial findings from the important observational facts.It aims to provide a comprehensive report on the progress of the above experiments for those who are interested in. 相似文献
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利用区域气候模式PRECIS（Providing Regional Climates for Impacts Studies），首先选取若干旱涝指标，在验证模式对各旱涝指标的模拟能力的基础上，分析SRES A1B（Special Report on Emissions Scenarios A1B）情景下华南地区21世纪中后期（2040~2099年）各旱涝指标相对气候基准时段（1961~1990年）的变化情况，进而初步探讨华南地区未来旱涝情况的可能变化。研究表明，PRECIS能够较好地模拟出所选取的旱涝指标的年际变化和月变化特征；在SRES A1B情景下，21世纪中后期华南地区极端强降水事件的发生频率和强度都将显著增加，且强降水期将有所延长，从而使得华南地区出现雨涝灾害的可能性大大增加。与此同时，华南地区未来在春季、夏季和秋季发生气象干旱的可能性变化不显著，但在冬季发生气象干旱的可能性却将增加，尤其是在21世纪后30年冬季出现气象干旱的可能性更高。 相似文献
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China lies in East-Asian monsoon region,which is one of the well-known active monsoonzones around the world.Monsoon anomaly results in frequent natural disasters,such as drought,torrential rain and flood.In 1998,joint intensified observations for 4 major meteorologicalscientific experiments have been carried out over Chinese major monsoon affected areas.A numberof valuable data have been obtained and some observational facts have come out after initialanalysis.The present paper is to give an introduction to the 4 major meteorological scientificexperiments conducted in 1998 in China.including its origin and scientific goals,implementationand planning,equipment and progress,and initial findings from the important observational facts.It aims to provide a comprehensive report on the progress of the above experiments for those whoare interested in. 相似文献
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