人为热对上海市夏季气象要素的影响

A study of the effect of anthropogenic heat on meteorological factors in the summer of Shanghai City

利用能源消耗数据、人口密度数据及相关经济数据,估算出2015年上海夏季人为热大值区主要集中在市中心,市区人为热通量最大值约为122.6 W/m^2,将此估算的人为热耦合在中尺度模式单层冠层方案中,模拟了人为热对上海夏季气象因子的影响.结果表明,人为热的增加导致上海夏季感热增加约86.3 W/m^2,温度升高约1.4℃;边界层高度约上升60 m;10 m风速约增大了0.5 m/s.人为热使城郊温度差异增加,热岛效应增强,形成低层辐合、高层辐散的大气结构,城郊对流得到发展.

Anthropogenic heat in Shanghai City and its influence on meteorological factors were estimated,by utilizing energy consumption data,population density data and related economic data.The results showed that anthropogenic heat in Shanghai was about 122.6 W/m^2.Sensitive heat in Shanghai increased by 86.3 W/m^2 due to anthropogenic heat,which led to a temperature rise of about 1.4℃;the boundary layer height increased about 60 meters;10 meters’height wind speed increased by about 0.5 m/s.The anthropogenic heat caused the increase of the temperature difference in the suburbs and the enhancement of the heat island effect,forming an atmospheric structure of a convergence of the lower layer and a divergence of the upper layer,which resulted in the development of the convection.