摘要
“冷湖”是由冷径流与夜间地表面和空气层的长波辐射冷却两种原因所造成。本文首先研究近地层空气的长波辐射冷却对“冷湖”形成所起的作用,然后,在一简单山谷中建立二维的数值模式,探讨山谷中“冷湖”的时空变化规律。最后将模式计算结果同实测和前人研究成果作比较,发现两者吻合较好。
In radiation night, the cold air on the valley slope flows into valley and cools due to the lost of long-wave radiation, then a cold air pool is formed. In this paper, a two-dimensional nubmerical simulation of cold air pool in an isolated valley is carried out. some factors' effects on the cold air pool are studied on numberical methods.The agreement between the calculated values and the observed facts shows that the model can respond the variation of cold air pool with the cooling time.
出处
《气象科学》
CSCD
北大核心
1989年第3期276-290,共15页
Journal of the Meteorological Sciences
基金
国家教委高教科技基金资助课题
