Characterization and verification of ACAM slit functions for trace-gas retrievals during the 2011 DISCOVER-AQ flight campaign

Liu, C.; Liu, X.; Kowalewski, M. G.; Janz, S. J.; González Abad, G.; Pickering, K. E.; Chance, K.; Lamsal, L. N.

doi:https://doi.org/10.5194/amt-8-751-2015

Articles | Volume 8, issue 2

https://doi.org/10.5194/amt-8-751-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-8-751-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 8, issue 2

Research article

|

13 Feb 2015

Research article |

| 13 Feb 2015

Characterization and verification of ACAM slit functions for trace-gas retrievals during the 2011 DISCOVER-AQ flight campaign

C. Liu, X. Liu, M. G. Kowalewski, S. J. Janz, G. González Abad, K. E. Pickering, K. Chance, and L. N. Lamsal

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Final revised paper (published on 13 Feb 2015)
Preprint (discussion started on 19 Nov 2014)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC C3794: 'Review by Alexander Cede for Characterization and Verification of ACAM Slit Functions for Trace Gas Retrievals during the 2011 DISCOVER-AQ Flight Campaign', Alexander Cede, 19 Nov 2014
- AC C4557: 'Response to Alexander's comments', Xiong Liu, 14 Jan 2015
RC C3830: 'Characterization and verification of ACAM slit functions for trace gas retrievals during the 2011 DISCOVER-AQ flight campaign by C. Liu et al', G. Mount, 20 Nov 2014
- AC C4561: 'Response to George's comments', Xiong Liu, 14 Jan 2015

Short summary

We characterize the wavelengths and slit functions of Airborne Compact Atmospheric Mapper (ACAM) measurements in ~304--500 nm through the cross-correlation technique. It is necessary to account for atmospheric gas absorption and the ring effect. The derived broadened Gaussian slit functions agree very well with laboratory measurements. Trace gas retrieval comparisons demonstrate that the cross-correlation technique can be reliably used to characterize slit functions.