摘要
利用1970-2007年保定市和周边邻近的徐水、满城、望都、高阳4个气象站的气温资料,应用统计学方法,对保定市热岛效应的年代际、年际、季节和日变化特征进行了分析。结果表明:保定市城市热岛效应十分明显,在最近的38 a中,市区比郊区年平均气温偏高0.7℃,且这一现象有增强的趋势,平均增长率为0.18℃/10 a。保定市城市热岛效应主要表现在对最低气温的影响,对最高气温的影响不明显,市区比郊区年平均最低气温偏高1.5℃。保定市城市热岛效应四季差异较大,热岛效应最强的季节是冬季,38 a中冬季的平均气温差达到1.0℃,最弱的季节是夏季,夏季平均气温差为0.5℃。保定市的热岛强度日变化特征是夜间强、白天弱。
The heat island effect characteristics of interdecadal, interannual, seasonal and daily changes in Baoding are analyzed by using the temperature data in 1970 -2007 coming from Baoding Meteorological Office and its surroundings （Xushui, Mancheng, Wangdu and Gaoyang station）. The results show that urban heat island effect in Baoding exists obviously. During the last 38 years,the mean annual temperature in the city is 0.7℃ higher than that in the suburb and this is increasing by 0.18℃/10a. Especially the mean annual low temperature in the city is 1.5℃ higher than that in the suburb. Urban heat island effect in Baoding is the utmost in winter, and in summer is the least. The mean seasonal temperature in winter in the city is 1.0℃ higher than that in the suburb. The mean seasonal temperature in summer in the city is only 0.5℃ higher than that in the suburb. The daily change of urban heat island effect is strong in night while weak in daylight.
出处
《气象与环境科学》
2009年第B09期265-267,共3页
Meteorological and Environmental Sciences
关键词
热岛效应
年际变化
季节变化
日变化
heat island effect
interannual change
seasonal change
daily change
