摘要
人类活动的影响改变了城市下垫面的性质，引起近地层气象要素的的变化．同时，随着城市化的发展越来越多的污染物质进入大气，影响城市的辐射平衡和热平衡，使城市的风场和温度场分布更加复杂．本文结合实测资料，在总结前人工作的基础上，分析城市气候最明显的特征，即城市热岛的成因及其发展特征，并进一步阐明由于热岛效应引发的局地风系和城市边界风场结构，对一些观测现象给出物理解释．
Human activities greatly influence the urban area surface layer and cause many changes in meteorological elements. In these elements, velocity and temperature are the most important ones Now cities in the world are becoming larger and larger. Urban climate shows many characters that are apparently different from those of the suburban climate. In this article we have analyzed some phenomena that appear in urban area and give them physical explanation. Temperature and velocity distributions are the most important features in. urban climate. We describe their characters, explain the physical basis for the formation of urban heat island and thermal induced urban heat island circulation, and give same information about urban planetary boundary layer.
出处
《南京大学学报（自然科学版）》
CSCD
1995年第1期165-167,共3页
Journal of Nanjing University（Natural Science）
