摘要
地表温度是气象、生态等研究领域的重要参数之一。本文对MODIS数据的分裂窗算法进行简单介绍,并将该算法应用到天津市区域。通过遥感反演数据与地面观测资料的对比,反演结果能真实反映出地表热场的分布特征,二者有很好的相关性(R2=0.38,P<0.0001)。通过多时次数据的线性拟合可有效提高反演精度,可为城市热岛研究提供有力的技术支持。
Land surface temperature is one of important parameters in meteological and ecological research field.Split window algorithm based on MODIS data was briefly introduced and applied in Tianjin area.Comparison between data retrieval and surface observation data showed that data retrieval could reflect distribution of land surface thermal field.Data retrieval correlates very well with the observation data(R2=0.38,P<0.0001).Linear fitting of different time series data can improve retrieval precision effectively.The results could provide technical support for urban heat island study.
出处
《中国农业气象》
CSCD
2009年第S1期137-139,共3页
Chinese Journal of Agrometeorology
关键词
地表温度
MODIS
天津
裂窗法
Land surface temperature
MODIS
Tianjin
Split Window Algorithm