摘要
利用“绿洲系统能量与水分循环过程观测试验”加强期(IOP)在甘肃省酒泉市金塔绿洲观测的资料,分析了夏季金塔绿洲边缘的小气候特征及地表辐射收支和地表能量平衡特征。作为绿洲沙漠相互作用的界面,在白天绿洲边缘的垂直运动仍然是以上升气流为主,并且其小气候主要受土壤湿度的影响。中午前后绿洲边缘的总辐射最大值在1000W.m-2左右,净辐射>700W.m-2;在白天,仅有个别天数的感热通量超过100W.m-2,最大值仅为150W.m-2左右。在整个观测期,有超过70%的天数出现负感热通量。而Bowen比在±10-1量级,地表能量不平衡的差额较大,约28%。
The characteristics of the microclimate, radiation budget and energy transferring on the edge of oasis were analyzed. The data is got from “The Oasis System Energy and Water Cycle Field Experiment”, which hold in the Jinta County on June 8 to July 12, 2004. It is found that, （1） at the daytime, the air vertical movement is downward, and the microclimate characteristics is influenced by the soil moisture;（2） the maximum value of solar radiation is around 1000 W · m^-2, and the net radiation can exceed 700 W · m^-2 ; （3） the sensible and ground heat fluxes are in same order of magnitude, the probability of negative sensible heat flux is about 70% ; （4） the Bowen rate is in the order of ±10^-1, the residual of energy budget is about 28%.
出处
《高原气象》
CSCD
北大核心
2005年第4期527-533,共7页
Plateau Meteorology
基金
国家自然科学基金重点项目(40233035
40305011)
中国科学院寒区旱区环境与工程研究所创新项目(CX2004123)共同资助
关键词
绿洲边缘
小气候特征
辐射与能量平衡
On the edge of oasis
Microclimate characteristics
Radiation and energy balance
