摘要
Based on the meteorological data in the recent 50 years,the climate variation characteristics of Chengdu City in urbanization were analyzed.The results showed that in the early of 1990s',the heat island effects and the dry island effects were appeared.The precipitation at the end of 1990s' to 2008 had a significant decrease.At the main flood season the rainfall in urban district was a little bigger than that in the suburb.The possible reasons were that frequent human activities in urban district resulted in large amount of aerosol particles,which increase the condensation nucleus and were beneficial to form more precipitation.
Based on the meteorological data in the recent 50 years,the climate variation characteristics of Chengdu City in urbanization were analyzed.The results showed that in the early of 1990s',the heat island effects and the dry island effects were appeared.The precipitation at the end of 1990s' to 2008 had a significant decrease.At the main flood season the rainfall in urban district was a little bigger than that in the suburb.The possible reasons were that frequent human activities in urban district resulted in large amount of aerosol particles,which increase the condensation nucleus and were beneficial to form more precipitation.
