Journal of Atmospheric and Environmental Optics ›› 2013, Vol. 8 ›› Issue (6): 440-447.

• 论文 • Previous Articles     Next Articles

CO2 Column Souding Sensitive Analysis by IR Hyperspectroscopy

XU Fei-fei1, 2, HU Yong1, YIN Qiu3, GONG Cai-lan1, ZHU Ling-ya4, HE Hua-ying4   

  1. (1 Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; 
    2 University of Chinese Academy Sciences, Beijing 100049, China; 
    3 Shanghai Application Center of Satellite Remote Sensing and Measurement, Shanghai 201199, China; 
    4 China Centre for Resources Satellite Data and Application, Beijing 100094, China)
  • Received:2013-06-14 Revised:2013-07-11 Online:2013-11-28 Published:2013-11-06

Abstract:

The effects of spectral resolution, spectral calibration accuracy, surface reflectance, atmospheric profile, and radiation resolution on the CO2 column sensitivity for hyperspectral sounding were simulated by the infrared radiation transfer model MODTRAN5. In the meantime, sounding radiance variation index S changing with the gas content was defined. And the relationship of sounding sensitivity, spectral resolution, and signal-to-noise ratio (SNR) were comprehensively analyzed. Results can be taken as the reference for designing future hyperspectral IR sensors and developing hyperspectral retrieval algorithm. The results can provide an important reference for channel selection about CO2 column inversion and analysis about CO2 sounding sensitivity parameter.

Key words: radiative transfer mode MODTRAN5, hyperspectral sounding, sounding sensitivity, CO2

CLC Number: 

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