摘要
利用2005年9月-2008年8月廊坊市区域加密自动站逐小时气温资料,采用城、郊气温对比法研究了廊坊城市热岛效应,结果表明:廊坊城市热岛强度夜间大于白天,但变化幅度白天大于夜间,但在四季不同时段也存在“城市冷岛”现象。不同气象条件下,廊坊城市热岛强度及变化存在明显差异,晴朗无风时城市平均热岛强度最大,平均强度达1.25℃,阴雨天气条件下城市平均热岛强度最小,平均强度仅有0.10℃。
Basing the hourly temperature data of the automation weather station (AWS) in Langfang city from Sep. 2005 to Aug. 2008, the temperatures between rural and urban were contrasted. Results show that urban heat island (UHI) effect intensity (variation) is stronger(weaker) during the day than at night. And there are also " urban cold island" phenomena during different times of a year. Under different weather conditions, there are obvious changes in UHI intensity and variation. The average intensity is the strongest (weakest) in clear (cloudy) days.
出处
《气象研究与应用》
2009年第2期26-30,共5页
Journal of Meteorological Research and Application
关键词
城市热岛效应
昼夜变化
不同气象条件
影响
Urban heat island effect
Diurnal variation
Different weather Conditions
Influence