Evaluation of water vapour assimilation in the tropical  upper troposphere
and lower stratosphere by a chemical transport model

Payra, Swagata; Ricaud, Philippe; Abida, Rachid; El Amraoui, Laaziz; Attié, Jean-Luc; Rivière, Emmanuel; Carminati, Fabien; von Clarmann, Thomas

doi:https://doi.org/10.5194/amt-9-4355-2016

Articles | Volume 9, issue 9

https://doi.org/10.5194/amt-9-4355-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-9-4355-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 9, issue 9

Research article

|

06 Sep 2016

Research article |

| 06 Sep 2016

Evaluation of water vapour assimilation in the tropical upper troposphere and lower stratosphere by a chemical transport model

Swagata Payra, Philippe Ricaud, Rachid Abida, Laaziz El Amraoui, Jean-Luc Attié, Emmanuel Rivière, Fabien Carminati, and Thomas von Clarmann

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Month	HTML	PDF	XML	Total
Mar 2016	108	38	0	146
Apr 2016	27	13	0	40
May 2016	13	12	3	28
Jun 2016	15	5	1	21
Jul 2016	8	10	3	21
Aug 2016	9	3	0	12
Sep 2016	221	23	5	249
Oct 2016	19	7	1	27
Nov 2016	5	3	0	8
Dec 2016	3	3	0	6
Jan 2017	10	7	0	17
Feb 2017	9	5	0	14
Mar 2017	17	8	4	29
Apr 2017	18	6	2	26
May 2017	23	15	1	39
Jun 2017	16	8	2	26
Jul 2017	9	5	0	14
Aug 2017	13	13	2	28
Sep 2017	6	9	0	15
Oct 2017	6	21	0	27
Nov 2017	6	16	0	22
Dec 2017	9	14	0	23
Jan 2018	9	20	0	29
Feb 2018	11	17	1	29
Mar 2018	17	15	0	32
Apr 2018	6	8	0	14
May 2018	11	16	0	27
Jun 2018	7	14	0	21
Jul 2018	9	14	0	23
Aug 2018	15	17	0	32
Sep 2018	6	15	0	21
Oct 2018	7	9	1	17
Nov 2018	10	14	3	27
Dec 2018	9	11	1	21
Jan 2019	5	8	1	14
Feb 2019	6	9	0	15
Mar 2019	3	19	3	25
Apr 2019	6	20	1	27
May 2019	9	14	1	24
Jun 2019	7	19	0	26
Jul 2019	5	14	0	19
Aug 2019	8	20	1	29
Sep 2019	4	16	0	20
Oct 2019	8	21	2	31
Nov 2019	8	15	0	23
Dec 2019	4	13	0	17
Jan 2020	10	8	1	19
Feb 2020	4	9	0	13
Mar 2020	6	12	0	18
Apr 2020	5	9	0	14
May 2020	6	10	0	16
Jun 2020	11	16	0	27
Jul 2020	29	27	5	61
Aug 2020	12	15	5	32
Sep 2020	7	10	0	17
Oct 2020	5	11	2	18
Nov 2020	10	9	1	20
Dec 2020	15	9	0	24
Jan 2021	13	16	0	29
Feb 2021	12	14	1	27
Mar 2021	13	14	1	28
Apr 2021	7	15	2	24
May 2021	10	13	1	24
Jun 2021	4	10	0	14
Jul 2021	10	15	1	26
Aug 2021	14	15	1	30
Sep 2021	10	16	0	26
Oct 2021	8	41	0	49
Nov 2021	7	33	0	40
Dec 2021	11	16	1	28
Jan 2022	11	16	0	27
Feb 2022	9	7	1	17
Mar 2022	9	12	0	21
Apr 2022	7	12	2	21
May 2022	8	10	0	18
Jun 2022	7	7	0	14
Jul 2022	5	9	2	16
Aug 2022	12	17	1	30
Sep 2022	8	10	0	18
Oct 2022	11	8	1	20
Nov 2022	16	10	1	27
Dec 2022	12	17	3	32
Jan 2023	10	15	1	26
Feb 2023	14	13	1	28
Mar 2023	21	15	5	41
Apr 2023	6	10	0	16
May 2023	54	15	0	69
Jun 2023	58	7	1	66
Jul 2023	44	10	0	54
Aug 2023	36	7	1	44
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Nov 2023	24	7	0	31
Dec 2023	40	7	2	49
Jan 2024	40	7	0	47
Feb 2024	31	13	1	45
Mar 2024	43	23	1	67
Apr 2024	38	11	1	50
May 2024	17	15	6	38
Jun 2024	16	9	3	28
Jul 2024	15	8	1	24
Aug 2024	28	5	3	36
Sep 2024	3	7	0	10
Oct 2024	10	7	1	18
Nov 2024	4	26	1	31
Dec 2024	9	26	1	36
Jan 2025	15	7	3	25
Feb 2025	17	8	1	26
Mar 2025	20	11	0	31
Apr 2025	9	20	2	31
May 2025	10	7	1	18

Cumulative views and downloads (calculated since 17 Mar 2016)

Month	HTML	PDF	XML	Total
Mar 2016	108	38	0	146
Apr 2016	27	13	0	40
May 2016	13	12	3	28
Jun 2016	15	5	1	21
Jul 2016	8	10	3	21
Aug 2016	9	3	0	12
Sep 2016	221	23	5	249
Oct 2016	19	7	1	27
Nov 2016	5	3	0	8
Dec 2016	3	3	0	6
Jan 2017	10	7	0	17
Feb 2017	9	5	0	14
Mar 2017	17	8	4	29
Apr 2017	18	6	2	26
May 2017	23	15	1	39
Jun 2017	16	8	2	26
Jul 2017	9	5	0	14
Aug 2017	13	13	2	28
Sep 2017	6	9	0	15
Oct 2017	6	21	0	27
Nov 2017	6	16	0	22
Dec 2017	9	14	0	23
Jan 2018	9	20	0	29
Feb 2018	11	17	1	29
Mar 2018	17	15	0	32
Apr 2018	6	8	0	14
May 2018	11	16	0	27
Jun 2018	7	14	0	21
Jul 2018	9	14	0	23
Aug 2018	15	17	0	32
Sep 2018	6	15	0	21
Oct 2018	7	9	1	17
Nov 2018	10	14	3	27
Dec 2018	9	11	1	21
Jan 2019	5	8	1	14
Feb 2019	6	9	0	15
Mar 2019	3	19	3	25
Apr 2019	6	20	1	27
May 2019	9	14	1	24
Jun 2019	7	19	0	26
Jul 2019	5	14	0	19
Aug 2019	8	20	1	29
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Oct 2019	8	21	2	31
Nov 2019	8	15	0	23
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Feb 2020	4	9	0	13
Mar 2020	6	12	0	18
Apr 2020	5	9	0	14
May 2020	6	10	0	16
Jun 2020	11	16	0	27
Jul 2020	29	27	5	61
Aug 2020	12	15	5	32
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Oct 2020	5	11	2	18
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Jan 2021	13	16	0	29
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Jul 2021	10	15	1	26
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Feb 2022	9	7	1	17
Mar 2022	9	12	0	21
Apr 2022	7	12	2	21
May 2022	8	10	0	18
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Oct 2022	11	8	1	20
Nov 2022	16	10	1	27
Dec 2022	12	17	3	32
Jan 2023	10	15	1	26
Feb 2023	14	13	1	28
Mar 2023	21	15	5	41
Apr 2023	6	10	0	16
May 2023	54	15	0	69
Jun 2023	58	7	1	66
Jul 2023	44	10	0	54
Aug 2023	36	7	1	44
Sep 2023	36	10	1	47
Oct 2023	46	10	2	58
Nov 2023	24	7	0	31
Dec 2023	40	7	2	49
Jan 2024	40	7	0	47
Feb 2024	31	13	1	45
Mar 2024	43	23	1	67
Apr 2024	38	11	1	50
May 2024	17	15	6	38
Jun 2024	16	9	3	28
Jul 2024	15	8	1	24
Aug 2024	28	5	3	36
Sep 2024	3	7	0	10
Oct 2024	10	7	1	18
Nov 2024	4	26	1	31
Dec 2024	9	26	1	36
Jan 2025	15	7	3	25
Feb 2025	17	8	1	26
Mar 2025	20	11	0	31
Apr 2025	9	20	2	31
May 2025	10	7	1	18

Cited

Discussed (final revised paper)

Discussed (preprint)

Latest update: 31 May 2025

Short summary

The study deals with the budget of water vapour (H₂O) at the tropical tropopause. The MOCAGE-VALENTINA assimilation tool has been used to assimilate Microwave Limb Sounder H₂O space-borne measurements within the 316–5 hPa range from August 2011 to March 2013. Diagnostics are developed to assess the quality of the analyses depending on several parameters. Sensitivity studies show the improvement on the analyses when assimilating measurements of better quality, mainly over the convective areas.