the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
| 25 Jul 2023
Interannual variability of summertime formaldehyde (HCHO) vertical column density and its main drivers in northern high latitudes
Abstract. The northern high latitudes (50–90° N, mostly including boreal forest and tundra ecosystem) has been undergoing rapid climate and ecological changes over recent decades, leading to significant variations in volatile organic compounds (VOCs) emissions from biogenic and biomass burning sources. HCHO, a widely used indicator of VOC emission, exhibits high climate sensitivity. However, the interannual variability of HCHO and its main drivers over the region remain unclear. In this study, we use the GEOS-Chem chemical transport model and satellite retrievals from Ozone Monitoring Instrument (OMI) and Ozone Mapping and Profiler Suite (OMPS) to examine HCHO vertical column density (VCD) interannual variations in summertime of 2005–2019. Our results show that wildfires heavily influence interannual variability of HCHO VCD over Siberia, Alaska, and North Canada, while biogenic emissions and background methane oxidation are the predominant drivers of HCHO interannual variability over East Europe. Solar-induced chlorophyll fluorescence (SIF) from Orbiting Carbon Observatory-2 (OCO-2) provides additional evaluation for HCHO interannual variability from biogenic emission, showing potential of constraining biogenic emission in northern high latitudes.
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Notice on discussion status
The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.
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Preprint
(1464 KB)
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Supplement
(896 KB)
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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.
- Preprint
(1464 KB) - Metadata XML
-
Supplement
(896 KB) - BibTeX
- EndNote
- Final revised paper
Journal article(s) based on this preprint
Interactive discussion
Status: closed
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RC1: 'Comment on egusphere-2023-1431', Anonymous Referee #1, 01 Sep 2023
It is a very interesting article and an alert for future impacts from global warming that will certainly contribute to HCHO emissions.
However I am not familiar with the methodology used to acquire data.
Abstract must contain quantitative results.
Lines 30-32 could use traditional references for HCHO formation, as those from Atkinson, Seinfeld, Pitts and Carter.
I t is not possible to use other molecules as wildfires tracers as carbon monoxide, and other type of molecules to help to understand the results as COS?
The results can be extrapolated to South Pole ?
Citation: https://doi.org/10.5194/egusphere-2023-1431-RC1 - AC2: 'Reply on RC1', Tianlang Zhao, 05 Feb 2024
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RC2: 'Comment on egusphere-2023-1431', Anonymous Referee #2, 10 Oct 2023
Please see the comments in the attached pdf.
- AC1: 'Reply on RC2', Tianlang Zhao, 05 Feb 2024
Interactive discussion
Status: closed
-
RC1: 'Comment on egusphere-2023-1431', Anonymous Referee #1, 01 Sep 2023
It is a very interesting article and an alert for future impacts from global warming that will certainly contribute to HCHO emissions.
However I am not familiar with the methodology used to acquire data.
Abstract must contain quantitative results.
Lines 30-32 could use traditional references for HCHO formation, as those from Atkinson, Seinfeld, Pitts and Carter.
I t is not possible to use other molecules as wildfires tracers as carbon monoxide, and other type of molecules to help to understand the results as COS?
The results can be extrapolated to South Pole ?
Citation: https://doi.org/10.5194/egusphere-2023-1431-RC1 - AC2: 'Reply on RC1', Tianlang Zhao, 05 Feb 2024
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RC2: 'Comment on egusphere-2023-1431', Anonymous Referee #2, 10 Oct 2023
Please see the comments in the attached pdf.
- AC1: 'Reply on RC2', Tianlang Zhao, 05 Feb 2024
Peer review completion
Journal article(s) based on this preprint
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Cited
Tianlang Zhao
Zolal Ayazpour
Gonzalo González Abad
Caroline Nowlan
Yiqi Zheng
The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.
- Preprint
(1464 KB) - Metadata XML
-
Supplement
(896 KB) - BibTeX
- EndNote
- Final revised paper