How consistent are top-down hydrocarbon emissions based on formaldehyde observations from GOME-2 and OMI?

Stavrakou, T.; Müller, J.-F.; Bauwens, M.; De Smedt, I.; Van Roozendael, M.; De Mazière, M.; Vigouroux, C.; Hendrick, F.; George, M.; Clerbaux, C.; Coheur, P.-F.; Guenther, A.

doi:10.5194/acp-15-11861-2015

Articles | Volume 15, issue 20

https://doi.org/10.5194/acp-15-11861-2015

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

https://doi.org/10.5194/acp-15-11861-2015

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

Articles | Volume 15, issue 20

Research article

|

26 Oct 2015

Research article |

| 26 Oct 2015

How consistent are top-down hydrocarbon emissions based on formaldehyde observations from GOME-2 and OMI?

T. Stavrakou, J.-F. Müller, M. Bauwens, I. De Smedt, M. Van Roozendael, M. De Mazière, C. Vigouroux, F. Hendrick, M. George, C. Clerbaux, P.-F. Coheur, and A. Guenther

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Month	HTML	PDF	XML	Total
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May 2015	36	27	3	66
Jun 2015	20	21	2	43
Jul 2015	14	7	1	22
Aug 2015	12	4	3	19
Sep 2015	11	12	0	23
Oct 2015	114	88	5	207
Nov 2015	69	87	5	161
Dec 2015	27	36	3	66
Jan 2016	50	31	1	82
Feb 2016	42	20	0	62
Mar 2016	40	17	0	57
Apr 2016	9	14	0	23
May 2016	18	13	0	31
Jun 2016	16	12	2	30
Jul 2016	13	10	3	26
Aug 2016	9	5	1	15
Sep 2016	17	9	0	26
Oct 2016	13	10	0	23
Nov 2016	10	6	0	16
Dec 2016	3	1	0	4
Jan 2017	17	8	3	28
Feb 2017	12	5	2	19
Mar 2017	20	16	3	39
Apr 2017	26	16	3	45
May 2017	26	18	1	45
Jun 2017	25	6	2	33
Jul 2017	19	13	0	32
Aug 2017	9	23	0	32
Sep 2017	15	35	1	51
Oct 2017	19	26	0	45
Nov 2017	22	24	0	46
Dec 2017	31	17	0	48
Jan 2018	31	12	1	44
Feb 2018	26	19	0	45
Mar 2018	32	25	1	58
Apr 2018	30	17	0	47
May 2018	29	11	1	41
Jun 2018	40	17	0	57
Jul 2018	38	13	0	51
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Oct 2018	35	17	5	57
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Dec 2018	33	11	2	46
Jan 2019	18	10	2	30
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Mar 2019	23	11	0	34
Apr 2019	16	13	0	29
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Mar 2020	6	6	0	12
Apr 2020	7	5	0	12
May 2020	8	4	0	12
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Nov 2023	31	5	0	36
Dec 2023	41	11	4	56
Jan 2024	70	45	1	116
Feb 2024	41	16	0	57
Mar 2024	54	24	5	83
Apr 2024	42	16	2	60
May 2024	30	21	3	54
Jun 2024	54	17	1	72
Jul 2024	21	14	0	35
Aug 2024	33	17	2	52
Sep 2024	18	11	0	29
Oct 2024	25	11	1	37
Nov 2024	10	9	2	21
Dec 2024	9	9	1	19
Jan 2025	25	14	1	40
Feb 2025	40	18	2	60
Mar 2025	31	33	1	65
Apr 2025	26	19	1	46
May 2025	33	14	3	50
Jun 2025	60	29	1	90
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Aug 2025	78	34	2	114
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Cumulative views and downloads (calculated since 22 Apr 2015)

Month	HTML	PDF	XML	Total
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May 2015	36	27	3	66
Jun 2015	20	21	2	43
Jul 2015	14	7	1	22
Aug 2015	12	4	3	19
Sep 2015	11	12	0	23
Oct 2015	114	88	5	207
Nov 2015	69	87	5	161
Dec 2015	27	36	3	66
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Mar 2016	40	17	0	57
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Jul 2016	13	10	3	26
Aug 2016	9	5	1	15
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Apr 2017	26	16	3	45
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May 2023	33	11	0	44
Jun 2023	40	6	1	47
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Aug 2023	50	17	2	69
Sep 2023	42	10	1	53
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Nov 2023	31	5	0	36
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Jan 2024	70	45	1	116
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Mar 2024	54	24	5	83
Apr 2024	42	16	2	60
May 2024	30	21	3	54
Jun 2024	54	17	1	72
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Aug 2024	33	17	2	52
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Nov 2024	10	9	2	21
Dec 2024	9	9	1	19
Jan 2025	25	14	1	40
Feb 2025	40	18	2	60
Mar 2025	31	33	1	65
Apr 2025	26	19	1	46
May 2025	33	14	3	50
Jun 2025	60	29	1	90
Jul 2025	38	24	5	67
Aug 2025	78	34	2	114
Sep 2025	74	27	1	102
Oct 2025	24	27	0	51
Nov 2025	17	20	3	40

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Short summary

Formaldehyde columns from two space sensors, GOME-2 and OMI, constrain by inverse modeling the global emissions of HCHO precursors in 2010. The resulting biogenic and pyrogenic fluxes from both optimizations show a very good degree of consistency. The isoprene fluxes are reduced globally by ca. 10%, and emissions from fires decrease by ca. 35%, compared to the prior. Anthropogenic emissions are weakly constrained except over China. Sensitivity inversions show robustness of the inferred fluxes.