摘要
利用太湖流域2010年3月26日过境的1景环境一号卫星热红外数据(轨道号为451/77),根据同步modis数据反演大气水汽含量参数,分别利用覃志豪单窗算法、普适性单通道算法、基于影像的Artis反演算法反演太湖流域地表温度,通过与同期的MOD11_L2级modis温度产品进行对比分析,探寻适合于环境卫星热红外通道反演地表温度的方法,以达到对环境一号卫星热红外数据定量化应用示范的目的。结果表明,相比其他算法,普适性单通道算法精度较高,与modis温度产品温差较小,为+1.23 K,而环境一号卫星过境时间与modis温度产品时差为39 min,因此该方法的反演精度可以接受。
Based on the thermal infrared images of the Taihu Lake Basin taken by the HJ-1 satellite on March 26,2010,atmospheric moisture content was inverted using the synchronous modis data and land surface temperature（LST） was inverted with mono-window algorithm（Qin,2001）,generalized single-channel algorithm（Jimenez-Munoz Sobrino,2003） and image-based Artis inversion algorithm（Artis Carnahan,1982）,separately for comparison with the temperature product of modis of Grade MOD11_L2,so as to explore suitable method for inversion of surface temperature using the HJ-1 satellite thermal infrared channel.Results show that the generalized single-channel algorithm is more precise than the others and its results differ slightly from the modis temperature product,being 1.23 K on average.Moreover,the overhead time of the satellite is only 39 minutes different from the time of the modis LST product.Therefore,the use of the generalized single-channel algorithm for inversion is acceptable in accuracy.
出处
《生态与农村环境学报》
CAS
CSSCI
CSCD
北大核心
2011年第2期100-104,共5页
Journal of Ecology and Rural Environment
基金
"十一五"国家科技支撑计划重点项目(2008BAC34B07-03
2008BAC34B01-2)
国家水体污染控制与治理科技重大专项(2008ZX07528-005)
关键词
环境一号卫星
地表温度
单窗算法
太湖流域
HJ-1 satellite
land surface temperature（LST）
mono-window algorithm
Taihu Lake Basin
