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针对CBERS-02IRMSS的热红外通道特性,对Jimenez-Munoz和Sobfino提出的普适性单通道地表温度反演算法进行改进,并利用该传感器热红外遥感数据反演北京地区和苏锡常地区的地表温度;利用2004年8月17日在青海湖的野外实测数据对该算法的地表温度反演结果进行的验证表明,改进的单通道反演算法应用于CBERS-02IRMSS传感器热红外数据的地表温度反演具有很高的反演精度。并在此基础上,运用城市热场变异指数对北京地区和苏锡常地区的城市热岛效应进行分析,运用中国研制的热红外卫星遥感数据给出了城市热岛效应的定量化描述。结果表明,CBERS-02IRMSS热红外遥感数据完全可以满足定量化应用的要求,具有很大的应用潜力。
Improving the Jimenez-Munoz and Sobrino's generalized single-channel method for retrieving land surface temperature from remote sensing data(published at Journal of Geophysical Research,2003,108(doi: 10.1029/2003JD003480) according to the thermal channel's characteristics of CBERS- 02 IRMSS and using its thermal infrared remote sensing data to inverse the land surface temperatures of Beijing and Su-Xi-Chang areas.Field measurement data at Lake Qinghai on August 17,2004 was selected as the criterions to validate the inverse results of LST and the outcomes indicated that the improved single-channel LST inversion algorithm was very suitable for CBERS- 02 IRMSS thermal infrared data and with high accuracy inversion results.Based on the LST retrieved from IRMSS thermal infrared data,a new index called urban thermal field variance index was used to quantitatively analyze the urban heat island effect.The conclusions showed that CBERS- 02 IRMSS thermal infrared data can satisfy the requirements of quantitative applications and have a prodigious application potential.