On-Orbit Spectral Calibration and Uncertainty Analysis of Greenhouse Gases Monitoring Instrument

Journal of Atmospheric and Environmental Optics ›› 2018, Vol. 13 ›› Issue (2): 131-140.

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On-Orbit Spectral Calibration and Uncertainty Analysis of Greenhouse Gases Monitoring Instrument

GAN Weiwei1,2, YI Weining1, DU Lili1, YE Hanhan1

（1 Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
2. Graduate School, University of Science and Technology of China, HeFei 230026, China）

Received:2017-04-01 Revised:2017-04-17 Online:2018-03-28 Published:2018-04-15
Supported by:
Supported by National Science Foundation for Young Scientists of China(国家青年科学基金, 41601379)

Abstract

Abstract:

Greenhouse gases monitoring instrument (GMI) uses spatial heterodyne interference technology which can effectively detect atmospheric high-resolution absorption spectra during 759~2058 nm. And the calibration is the base of GMI spectral image data quantitative application. Based on the principle of GMI imaging and spectral calibration, the methods of on-orbit spectral calibration are discussed, and spectral calibration scheme of the external light source characteristic spectral is presented. Through the calculation of the simulation data, the uncertainty of calibration is further analyzed, and the uncertainty of on-orbit the spectral calibration is 0.030 nm. The calibration results show that the calibration uncertainty is mainly affected by the light source calibration uncertainty and regression uncertainty. The method meets the calibration requirements of the instrument and provides the basis for quantitative inversion of atmospheric main greenhouse gases.

Key words: on-orbit spectral calibration, calibration uncertainty, greenhouse gases monitoring instrument

CLC Number:

TP732

GAN Wei-Wei, YI Wei-Ning, DU Li-Li, YE Han-Han. On-Orbit Spectral Calibration and Uncertainty Analysis of Greenhouse Gases Monitoring Instrument[J]. Journal of Atmospheric and Environmental Optics, 2018, 13(2): 131-140.

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On-Orbit Spectral Calibration and Uncertainty Analysis of Greenhouse Gases Monitoring Instrument

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