成都市夏季热岛效应动态变化研究

A Research on Dynamic Changes of the Summer Heat Island Effect in Chengdu

利用MODIS温度产品,计算出成都市2009—2013年的夏季地表温度,并通过对其进行分等,划分出热岛区域,通过建立转移矩阵的方法对其进行研究,从而得出成都市夏季热岛效应动态变化特点,成都市夏季热岛区分布区域从成片分布逐渐形成多个小的热岛中心;从2009—2013年,成都市夏季热岛范围呈先下降后上升的趋势;从2009—2013年,成都市夏季地表温度等级变化较大,占了95%以上,上升区和下降区变化基本持平,呈不稳定状态。

Using MODIS temperature product, calculated surface temperature in summer in Chengdu from 2009 to 2013. And using the method of classification, divided into heat island area. Based on this, built the transfer matrix to analysis its rule and obtained the Chengdu summer heat island effect dynamic characteristics. From 2009 to 2013, summer heat island range in Chengdu city showed a trend of decrease after the first increases. From 2009 to 2013, the change of the surface temperature in Chengdu city was large, more than 95%, the change of rising and falling area was essentially flat, and under inconsistent state.