摘要
本文以低纬高原城市昆明城区为研究对象，利用城内外屋顶面附近的风·温实测资料，分析了研究较少的，做为城市第二热力面的城市内外屋顶附近的风·温特征、变化规律及其差异，得到了一些有益的结果，可为探讨城市区域内屋顶面对城市气候形成的作用和机制、城市气候的深入研究，以及城市建筑的规划、设计提供依据。
The microclimatic observation was conducted over the rooftop in the urban and in the suburban of Kunming City of P. R. China. The main results obtained in this paper are summarized as follows:1. The wind speeds over the rooftop in the suburban are larger than in the urban,and the differences are more obvious at daytime.2. In the urban, at daytime of fine day the air exchange is slow because the wind speeds over the rooftop are smaller than in the suburban. The heats from rooftop surface dissipate to heating air over the rooftop,and the air temperatures over the rooftop in the urban are larger than in the suburban. At noon,the difference is larger (the maximum is 2. 7℃ at 14:00). At cloudy day and at nighttime, the air temperatures over the rooftop in the urban are lower than in the suburban.3. At daytime of fine day,the variation of the urban heat island in the rooftop is differentfrom that in the ground. The mechanism responsible for urban heat island as a resu1t of dif-ference between in the rooftop and in the ground is shown.
出处
《气象科学》
CSCD
北大核心
1998年第1期56-62,共7页
Journal of the Meteorological Sciences
基金
"国家教委留学回国科研启动基金"
"中国科学院留学经费择优支持回国工作基金"
"中国科学院昆明分院择优支持经费"资助
关键词
城市
屋顶面
热岛效应
风速
气温
city
rooftop, urban heat island
wind speed
temperature
