Articles | Volume 11, issue 9
https://doi.org/10.5194/amt-11-5403-2018
https://doi.org/10.5194/amt-11-5403-2018
Research article
 | 
28 Sep 2018
Research article |  | 28 Sep 2018

Preflight calibration of the Chinese Environmental Trace Gases Monitoring Instrument (EMI)

Min Jie Zhao, Fu Qi Si, Hai Jin Zhou, Shi Mei Wang, Yu Jiang, and Wen Qing Liu

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by MinJie Zhao on behalf of the Authors (05 Sep 2018)  Author's response   Manuscript 
ED: Publish as is (07 Sep 2018) by Hendrik Fuchs
AR by MinJie Zhao on behalf of the Authors (11 Sep 2018)
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Short summary
EMI is a nadir-viewing wide-field imaging spectrometer aiming to quantify the global distribution of tropospheric and stratospheric trace gases. The spectral range is 240–710 nm, with the spectral resolution 0.3–0.5 nm. The preflight accuracy of wavelength calibration is less than 0.05 nm; the accuracy of radiance calibration is less than 5 %. The obtained calibration key data are used for the L1b processor. In-orbit wavelength/radiometric calibration is used to monitor performance changes.