沈阳2007年城市热岛研究

城市热岛现象是城市气候灾害之一,随着城市化进程的迅速发展,城市热岛现象也越来越受到关注。城市密集的人口分布和汽车保有量的不断增加,加剧了城市热量排放加上越来越多的城市路面被水泥和沥青所代替,城市热岛现象必然会越来越严重。通过对沈阳及郊区康平、法库2007年常规气象资料进行热岛特征分析,并对12月25日全年热岛强度最高日进行风场、温度场、温度廓线、流场的分析。得出结论:沈阳市白天热岛强度比夜晚强,夜晚热岛强度比较低,有时会出现冷岛;沈阳冬天热岛强度最强;沈阳雪天或雨天热岛强度最强;沈阳热岛强度>2小时数冬天最多;通过对强热岛日的分析,白天污染重,有逆温存在,地面气流稳定,天气形势稳定,风速小,易出现强热岛。

Urban Heat Island Investigating in 2007 in Shenyang

Urban heat island is one of urban climate calamity,along with citilization course have developed rapialy,urban heat island is attentioned and attentioned.Dense population distributing and car retaining quantity in city is increasing ceaseless,the let of urban quantity of heat and urban urban road surface is replaced by cement and pitch more and more,urban heat island phenomenon is gravenessly more and more.Via analyzing routine weather station data in Shenyang and it's suburb,and analyze wind field、temperature field 、temperature line、flow field in 12-25(the strongest heat island day).Educe conclusion : heat island is stronger in daytime than in night of Shenyang,heat island is lower at night,sometimes appears cold island;heat island is strongest in winter in Shenyang;heat island is strongest in snow or rain in Shenyang;heat island strength >2 hour number is largest in winter;via analyze strong heat island,daytime,bad pollution,tradictorily temperature,groud flow stabilizate,weather stabilizate,wind speed little,appear easily strong heat island.