Land Surface Temperature Retrieval from CBERS-02 IRMSS Thermal Infrared Data and Its Applications in Quantitative Analysis of Urban Heat Island Effect

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.