金塔绿洲解放村水库夏季晴天水文气象效应的数值模拟  

Simulation of Hydrometeorological Effect of Jiefangcun Reservoir in Jinta Oasis Summer

作　　者：赵林[1,2] 陈玉春[1] 吕世华[1] 孟宪红[1] 李万莉[1,2] 李江林[1,2] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所寒旱区陆面过程与气候变化重点实验室,甘肃兰州730000 [2]中国科学院研究生院,北京100039

出　　处：《高原气象》2010年第6期1414-1422,共9页Plateau Meteorology

基　　金：国家自然科学基金重点项目(40633014);国家科技支撑计划资助项目(2007BAC29B04)共同资助

摘　　要：利用非静力中尺度数值模式RAMS,模拟了金塔绿洲南部边缘面积约为6 km2的小水库(解放村水库)夏季晴天的水文气象效应。结果表明:金塔绿洲附近的解放村水库面积虽然很小,但水库水体具有比较明显的"暖湖"、"冷湖"和"湿岛"效应,且有明显的湖风出现。敏感性试验表明水库水体总的作用是冷却作用,最大降温幅度为2.2℃;水库水体对风场有加速作用,最大增幅为1.4 m.s-1;水库水汽的影响高度能达到650 m左右,下风岸影响的最大距离约为3 km,上风岸约为300 m。Jiefangcun reservoir is a small reservoir with area about 6 km2,located in the southern edge of Jinta oasis,its hydrometeorological effect in fine day of summer was simutated by using the nonhydrostatic mesoscale model（RAMS）.The main results show：（1） Although area of Jiefangcun reservoir is small,but there is obvious warm（cold） lake effect,wet island effect and lake breeze.（2） In sensitivity test,from the difference in daily average potential temperature with and without the reservoirs,it shows that the reservoir has cooling effect and the largest decrease is 2.2℃.（3） In the difference in daily average horizontal wind with and without the reservoirs,it indicates that reservoir has an acceleration effect to wind field and the largest increase is 1.4 m·s-1.（4） The west-east vertical cross-section of difference of absolute humidity with and without the reservoirs,it indicates that the reservoir absolute humidity approaches to the land,within 300 m on the windward shore and about 3 km on the leeward shore,the top altitude where water body may affect air absolute humidity is about 650 m.

关 键 词：金塔绿洲解放村水库 RAMS 水文气象效应 

分 类 号：P463.24[天文地球—大气科学及气象学]