| 青海湖区域云、降水特征及降水效率的研究 |
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| 引用本文： | 张国庆,罗生洲,马晓虹,王红莉,张加昆,周万福,肖红斌,祁栋林.青海湖区域云、降水特征及降水效率的研究[J].干旱区研究,2008,25(6). |
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| 作者姓名： | 张国庆 罗生洲 马晓虹 王红莉 张加昆 周万福 肖红斌 祁栋林 |
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| 作者单位： | 青海省气象局 |
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| 基金项目： | 科技部社会公益研究专项，环湖人工增雨区降水机制研究共同资助 |
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| 摘 要： | 根据1995-2004年5～9月青海湖区域刚察、共和、天峻、海晏4站地面观测资料,对该地区主要降水云状和降水特征进行统计分析.结果表明:混合云的降水频率最高,其次是积云,层云较低;降水特征有明显的差异,降水强度、降水次数南部明显小于北部,大降水东北部多于西南部;刚察、天峻混合性降水出现频率最高,共和阵性降水最高,海晏连续性降水最高,各站降水最高频数多出现在8月;降水概率各站之间有明显差异,降水最大值多出现在7月,其次为6,8两月,低云量进入统计后,部分站出现双峰型变化特征.对积云和层状云产生的降水效率估算结果表明,高层云降水效率较高,积雨云降水效率较低,混合云降水效率在两者之间.
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| 关 键 词： | 云 降水 降水效率 青海湖 |
Study on Cloud and Precipitation Characteristics and Efficiency of Precipitation in the Qinghai Lake Area |
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| ZHANG Guo-qing,LUO Sheng-zhou,MA Xiao-hong,WANG Hong-li,ZHANG Jia-kun,ZHOU Wan-fu,XIAO Hong-bin,QI Dong-lin.Study on Cloud and Precipitation Characteristics and Efficiency of Precipitation in the Qinghai Lake Area[J].Arid Zone Research,2008,25(6). |
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| Authors: | ZHANG Guo-qing LUO Sheng-zhou MA Xiao-hong WANG Hong-li ZHANG Jia-kun ZHOU Wan-fu XIAO Hong-bin QI Dong-lin |
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| Abstract: | In this paper,the cloud and precipitation characteristics and efficiency of precipitation in the Qinghai Lake area are analyzed based on the meteorological data observed by 4 meteorological stations(Gangcha,Gonghe,Tianjun and Haiyan) in the Qinghai Lake area from May to September during the period of 1995-2004.The results show that the precipitation frequency of mixed cloud is the highest,then cumulus,and that of stratus is low.The precipitation characteristics are significantly different from different regions,the precipitation intensity and frequency in the southern part is obviously lower than that in the northern part,and heavy precipitation occurs more frequently in the northeastern part than that in the southwestern part.The occurring frequency of mixed precipitation is the highest at Gangcha and Tianjun meteorological stations,that of showery precipitation at Gonghe Meteorological Station is the highest,and that of successive precipitation is the highest at Haiyan Meteorological Station.The highest frequence of precipitation at these stations occurs mostly in August.Precipitation probability is significantly different from different stations,the highest monthly precipitation occurs in July,and then in June and August.The estimated results of precipitation efficiency of cumulus and stratus reveal that the precipitation efficiency of altostratus is the highest,then that of mixed cloud,and that of cumulonimbus is low. |
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| Keywords: | Qinghai Lake cloud precipitation precipitation efficiency |
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