Characteristics of Local Air Temperature Variation Influenced by Shanghai-Urbanization
The influence of urbanization on the surface air temperature,and the interdecadal variability of the heat-island and the related extreme events in Shanghai are analyzed by means of the daily data such as the average,the maximum and minimum surface air temperatures,water vapor,pressure and relative humidity at eleven observation stations from 1875 to 2006.The results show that the areas impacted by Shanghai urban heat-island tends to enlarge,the centre of annual mean heat-island is to shift to the-south in the recent years.Influencing by urbanization,the heat-wave events over the down-town occur more and more frequency,and the content of water vapor is getting smaller,especially in the suburb areas where has been less impacted by heat-island.The dew-point has been significantly decreased and the local climate tends to be "drying and warming" although the mean air temperature has been changed little depending on the analysis of multi-year heat-wave events.
NETL
NSTL
万方数据
