Analysis on the variation characteristics of temperature in Anqing City and urban heat island effect | 安庆市气温变化若干特征及城市热岛效应分析
2011
Liu Liqun, Anqing Meteorological Bureau, Anqing (China) | Zhu Yuexia, Anqing Meteorological Bureau, Anqing (China) | Gu Wei, Anqing Meteorological Bureau, Anqing (China)
[Objective] The aim was to analyse the variation characteristics of temperature in Anqing City and urban heat island effect. [Method] Based on the observation data of temperature from Anqing station, other surrounding meteorological stations and local automatic meteorological stations in suburbs, the annual variation of temperature and regional consistency was analysed, then the abrupt change of annual average temperature was tested by Mann-Kendall test, finally the influences of urban heat island effect on temperature variation in Anqing station were studied. [Result] Affected by station migration and urban construction, the annual average temperature increased significantly in Anqing station from 1977 to 2009, and the rising was more prominent after the middle of the 1990s. Mann-Kendall test showed that the change of temperature in Anqing station was obviously abrupt around 1993; because of the development of urbanization, average temperature in Anqing station was 0.8 ℃ higher than that in suburbs, and the minimum temperature rose more remarkably. In addition, urban heat island effect was the strongest in spring, followed by summer and autumn, while it was the weakest in winter. [Conclusion] The effects of urbanization development on the temperature in Anqing City were understood through this research.
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