热带气象学报2018，Vol.34Issue(2)：228-238,11.DOI:10.16032/j.issn.1004-4965.2018.02.009
上海城市热岛的变化特征
VARIATIONS OF THE URBAN HEAT ISLAND EFFECT IN SHANGHAI
徐伟 1杨涵洧 2张仕鹏 3茅懋 2陈琛 4梁萍 1夏立3
作者信息
- 1. 上海市金山区气象局,上海201508
- 2. 南京大学,江苏南京210046
- 3. 上海气候中心,上海200030
- 4. 上海中心气象台,上海200030
- 折叠
摘要
Abstract
This paper use d the hourly air temperature of 77 regional meteorological stations in Shanghai from 2011 to 2014 to study the temporal and spatial characteristics of the urban heat island (UHI) effect by the method of urban and rural comparison.Then,with the annual mean air temperature data of 20 national meteorological stations in the Yangtze River Delta region from 1961 to 2013,the influence of urbanization on the IUHI in Shanghai was studied by the spatial filtering method.The main conclusions are as follows:The IUHI showed a slowly increasing trend from 1961 to 2013 with a rate of 0.15～0.17℃ per 10 years and the maximum of annual IUHI reached 1.10～1.33℃,which appeared in 2006.The acceleration of urbanization in Shanghai was conducive to the increase of IUHI. Since the beginning of the 21st century,the increasing trend of IUHI had slowed down,which was consistent with global warming breaks.In recent years,the urban areas of Shanghai were concentrated within the outer ring.The IUHI of three different urban inner regions (the region within the inner ring,the region between the central and the inner ring,and the region between the outer and the central ring) showed the same diurnal variation characteristics.For the effect of different underlying surface,the IUHI decreased gradually from the inner ring to the outer ring,which was obvious at night.Both the IUHI and its diurnal variation were the strongest in winter,followed by autumn and spring,and the weakest in summer.The spatial distribution characteristics of IUHI in spring and summer were similar (the temperature in the east of Shanghai was lower than in the west and a strong UHI center was concentrated in the northwest of Shanghai).The spatial distribution characteristics of IUHI in autumn and winter were similar (the temperature in the west of Shanghai was lower than in the east and the strong UHI center was located near the urban area).It could be related to the monsoon.关键词
城市热岛/时空特征/城市化/热岛强度/空间滤波法Key words
urban heat island/spatial and temporal characteristics/urbanization/UHI intensity/spatial filtering method分类
天文与地球科学引用本文复制引用
徐伟,杨涵洧,张仕鹏,茅懋,陈琛,梁萍,夏立..上海城市热岛的变化特征[J].热带气象学报,2018,34(2):228-238,11.
