Articles | Volume 16, issue 21
Atmos. Chem. Phys., 16, 13477–13490, 2016
https://doi.org/10.5194/acp-16-13477-2016
Atmos. Chem. Phys., 16, 13477–13490, 2016
https://doi.org/10.5194/acp-16-13477-2016

Research article 01 Nov 2016

Research article | 01 Nov 2016

Observing atmospheric formaldehyde (HCHO) from space: validation and intercomparison of six retrievals from four satellites (OMI, GOME2A, GOME2B, OMPS) with SEAC4RS aircraft observations over the southeast US

Lei Zhu et al.

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Anna Wenzel on behalf of the Authors (11 Jul 2016)  Author's response
ED: Referee Nomination & Report Request started (06 Aug 2016) by Rainer Volkamer
RR by Anonymous Referee #2 (11 Aug 2016)
RR by Anonymous Referee #1 (12 Aug 2016)
ED: Reconsider after minor revisions (Editor review) (01 Sep 2016) by Rainer Volkamer
AR by Lei Zhu on behalf of the Authors (11 Sep 2016)  Author's response    Manuscript
ED: Publish as is (18 Oct 2016) by Rainer Volkamer
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Short summary
HCHO column data are widely used as a proxy for VOCs emissions, but validation of the data has been extremely limited. We use accurate aircraft observations to validate and intercompare 6 HCHO retrievals with GEOS-Chem as the intercomparison platform. Retrievals are interconsistent in spatial variability over the SE US and in daily variability, but are biased low by 20–51 %. Our work supports the use of HCHO column as a quantitative proxy for isoprene emission after correction of the low bias.
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