基于ETM^+数据的旱情监测  

Drought Monitoring Based on ETM^+ Data

作　　者：胡向辉[1] 陶建军[1] 

机构地区：[1]湖南科技大学建筑与城乡规划学院,湖南湘潭411201

出　　处：《地理空间信息》2014年第1期14-16,8,共3页Geospatial Information

基　　金：湖南省社科基金资助项目(09YBB157)

摘　　要：以福州市及周边地区为研究区域,根据该地区2002-05-26和2001-05-21的ETM数据,运用单窗算法反演了该地区的地表温度(LST)。与以往研究不同,在反演大气等效平均温度和大气透射率时,结合了研究区内以及周边台站的气象信息,运用ArcGIS 9.3和ENVI4.5实现了相关参数的反演,并通过求得的LST和NDVI指数,求得干旱级别指数(TVDI),旱情监测结果和国家气候中心所得到的结果基本一致。In this paper, the Fuzhou City and the surrounding areas was regarded as the study area. Combing with the ETM data on May 26,2002 and May 23,2001, single window algorithm was used to retrieval the Land Surface Temperature. Unlike previous studies, the meteorological information of the stations was used to retrieval equivalent average atmospheric temperature and atmospheric transmittance. And then ArcGIS 9.3 and the ENVI4.5 were used to retrieval the relevant parameter. Then connected with the NDVI index, the drought level index TVDI was obtained. The results were consistent with the situation from the national climate center.

关 键 词：单窗算法 温度反演 TVDI 干旱 

分 类 号：P237.9[天文地球—摄影测量与遥感]