摘要
本文借助二维大气中尺度数值模式,讨论了我国东北地区1月份大兴安岭东坡的焚风与山区地形形状的关系,并定性地绘出了该焚风现象生消的背景条件。
In this paper, a few factors affecting the foehn of the east slope of Da-xinganling mountainchain in Northeast China in January are discussed by using the two-dimensional atmospheric meso-scale numerical model. The results show. ( 1 ) The leading topographic factor resulting in Daxinganling foehn is the east steep slope of Daxinganling mountainchain. The eastern gentle slope further promotes the development of .Daxinganling foehn. And the small-scale redges can be niglected. (2) The large-scale background conditions are essential for Daxinganling foehn forming. The Daxinganling foehn can not occur when the scorer number (N/U) of the largescale background field is too great or too small.
出处
《地理研究》
CSSCI
CSCD
北大核心
1992年第3期16-21,共6页
Geographical Research
基金
国家自然科学基金(49175243)
关键词
大兴安岭
焚风
地形
Daxinganling, Foehn, Topography
