Journal of Atmospheric and Environmental Optics ›› 2016, Vol. 11 ›› Issue (3): 204-210.

• 论文 • Previous Articles     Next Articles

Cross-Calibration of FY-3A/VIRR Thermal Infrared Channel with TERRA/MODIS

LI Yixiu, WU Jun, FANG Yonghua   

  1. (AnHui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,AnhuiHefei 230031 China)
  • Received:2015-04-16 Revised:2015-04-23 Online:2016-05-28 Published:2016-05-25

Abstract:

Considering the limited calibration accuracy of FY-3A/VIRR sensor, and limited opportunities for calibration, the cross-calibration method of infrared channel of VIRR with high-precision MODIS of the onboard polar-orbit satellite TERRA is introduced. The cross-calibration is implemented by using the satellite data in January, March and September of 2013. The results show that the brightness temperature of VIRR calculated by using cross-calibration coefficients is nearly equal to the observed value of MODIS, and the vast majority of brightness temperature bias is less than 1 K. The validation results showed that cross-calibration coefficients has universality.

Key words: cross-calibration, infrared channels, spectral matching, FY-3A, MODIS

CLC Number: