基于DEM的山区气温地形修正模型——以陕西省耀县为例(英文)

编号 zgly0001586657

文献类型 期刊论文

文献题名 基于DEM的山区气温地形修正模型——以陕西省耀县为例(英文)

作者 杨昕  汤国安  肖晨超  邓凤东 

作者单位 KeyLaboratoryofVirtualGeographicEnvironmentofMinistryofEducationNanjingNormalUniversity  KeyLaboratoryofVirtualGeographicEnvironmentofMinistryofEducationNanjingNormalUniversity  ShaanxiRemoteSensingInformationCenterforAgricul 

母体文献 Journal of Geographical Sciences 

年卷期 2007年04期

年份 2007 

分类号 P423 

关键词 DEM  solarradiation  temperature  simulation  ShaanxiProvince 

文摘内容 In mountainous area, spatial interpolation is the traditional method to calculate air temperature by use of observed temperature data. Due to lack of sufficient observation data in mountainous areas many precise interpolation methods could give only coarse result which could not meet the demand of precision agriculture and local climate exploration. Based on DEMs of 25 m resolution, a reversed model is constructed, with which temperature is simulated to the corresponding slope unit from the solar radiation. Taking Yaoxian county as a test area, and mean monthly temperature data as basic information sources, which are collected from 15 weather stations around Yaoxian county in Shaanxi province from the year of 1970 to 2000, a simulation for the solar radiation cell by cell is completed. By simulating solar radiation at each slope and flat cell unit, the terrain revised temperature model could be realized. A comparison between the simulated temperature and the radiation temperature from TM6 thermal infrared image shows that the terrain improved model gets a finer temperature distribution at local level. The accuracy of simulated temperature in mountainous area is higher than it is in flat area.