摘要
地表温度是陆表过程研究的关键参数,卫星反演地表温度是获取区域及全球尺度辐射平衡、能量收支研究中地表温度参数的有效手段。目前,在平坦地表覆盖均一区域,基于热红外和微波遥感反演的地表温度已经被验证具有较好精度,尤其热红外遥感地表温度产品精度可达1 K以内。但是针对复杂地表的温度反演研究仍面临较大挑战。系统总结了复杂地形区地表温度反演的局限性,包括反演模型病态问题、地形复杂性、水汽云雾厚重造成数据缺失、真实性检验不确定性。并在此基础上,对未来复杂地表温度反演精度提高提出了可能实现的途径。
Land Surface Temperature(LST)is a crucial input parameter in the study of land surface processes.It’s effective to estimate the radiation balance and energy budget at local and global scales using remotely sensed data.Currently,the fast development of LST retrieval algorithm based on thermal infrared and microwave remote sensing has made a series of progress.Its accuracy can reach within 1 K in the uniform area of flat surface coverage derived from thermal infrared remotely sensed data especially.However,it is still a great challenge for their application over complex surface area.This paper systematically summarizes the limitations of LST retrieval in complex topographic areas,including pathological absence of inversion model,terrain complexity,data loss caused by thick vapor cloud,and uncertainty of authenticity test.Furthermore,we present suggestions for the future research to improve the accuracy of LST retrieval over complex surface.
作者
肖尧
马明国
闻建光
于文凭
Xiao Yao;Ma Mingguo;Wen Jianguang;Yu Wenping(Southwest University,School of Geographical Sciences,Chongqing Jinfo Mountain Field Scientific Observation and Research Station for Karst Ecosystem,Ministry of Education,Chongqing 400715,China;School of Geographical Sciences,Southwest University,Chongqing 400715,China;Chongqing Engineering Research Center for Remote Sensing Big Data Application,School of Geographical Sciences,Southwest University,Chongqing 400715,China;Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing 100101,China)
出处
《遥感技术与应用》
CSCD
北大核心
2021年第1期33-43,共11页
Remote Sensing Technology and Application
基金
国家自然科学基金项目“西南地区复杂地表陆表过程观测与模拟研究”(41830648)
“西南地区表层岩溶生态系统碳通量观测、分析与模拟”(41771453)资助。
关键词
地表温度
复杂地表
反演方法
水汽
真实性检验
Land surface temperature
Complex surface
Retrieval algorithm
Water vapor
Validation
