Transport pathways of peroxyacetyl nitrate in the upper troposphere and lower stratosphere from different monsoon systems during the summer monsoon season

Fadnavis, S.; Semeniuk, K.; Schultz, M. G.; Kiefer, M.; Mahajan, A.; Pozzoli, L.; Sonbawane, S.

doi:10.5194/acp-15-11477-2015

Articles | Volume 15, issue 20

https://doi.org/10.5194/acp-15-11477-2015

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

https://doi.org/10.5194/acp-15-11477-2015

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

Articles | Volume 15, issue 20

Research article

|

19 Oct 2015

Research article |

| 19 Oct 2015

Transport pathways of peroxyacetyl nitrate in the upper troposphere and lower stratosphere from different monsoon systems during the summer monsoon season

S. Fadnavis, K. Semeniuk, M. G. Schultz, M. Kiefer, A. Mahajan, L. Pozzoli, and S. Sonbawane

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Sep 2020	11	6	4	21
Oct 2020	7	6	1	14
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Aug 2021	30	8	5	43
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Oct 2021	7	35	3	45
Nov 2021	13	23	1	37
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Jan 2022	12	9	8	29
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Mar 2022	6	5	1	12
Apr 2022	8	1	1	10
May 2022	8	3	3	14
Jun 2022	3	3	1	7
Jul 2022	30	6	2	38
Aug 2022	12	4	7	23
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Oct 2022	12	2	14
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Feb 2023	14	6	0	20
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Apr 2023	9	6	0	15
May 2023	30	13	0	43
Jun 2023	37	4	1	42
Jul 2023	42	5	1	48
Aug 2023	41	8	3	52
Sep 2023	50	8	1	59
Oct 2023	91	6	2	99
Nov 2023	130	6	0	136
Dec 2023	46	14	6	66
Jan 2024	39	7	0	46
Feb 2024	39	9	2	50
Mar 2024	39	12	1	52
Apr 2024	38	5	3	46
May 2024	19	7	2	28
Jun 2024	36	8	2	46
Jul 2024	23	5	1	29
Aug 2024	37	5	0	42
Sep 2024	8	4	1	13
Oct 2024	26	3	1	30
Nov 2024	22	6	3	31
Dec 2024	17	6	5	28
Jan 2025	28	12	1	41
Feb 2025	33	8	0	41
Mar 2025	25	12	3	40
Apr 2025	22	9	0	31
May 2025	33	5	6	44
Jun 2025	41	9	0	50
Jul 2025	40	9	4	53
Aug 2025	55	19	0	74
Sep 2025	71	16	2	89
Oct 2025	32	18	0	50
Nov 2025	29	19	3	51
Dec 2025	6	7	0	13

Cumulative views and downloads (calculated since 01 Jun 2015)

Month	HTML	PDF	XML	Total
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Jul 2015	26	27	7	60
Aug 2015	14	4	3	21
Sep 2015	5	10	1	16
Oct 2015	115	78	3	196
Nov 2015	65	55	7	127
Dec 2015	15	40	2	57
Jan 2016	30	15	6	51
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Mar 2023	17	6	0	23
Apr 2023	9	6	0	15
May 2023	30	13	0	43
Jun 2023	37	4	1	42
Jul 2023	42	5	1	48
Aug 2023	41	8	3	52
Sep 2023	50	8	1	59
Oct 2023	91	6	2	99
Nov 2023	130	6	0	136
Dec 2023	46	14	6	66
Jan 2024	39	7	0	46
Feb 2024	39	9	2	50
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Apr 2024	38	5	3	46
May 2024	19	7	2	28
Jun 2024	36	8	2	46
Jul 2024	23	5	1	29
Aug 2024	37	5	0	42
Sep 2024	8	4	1	13
Oct 2024	26	3	1	30
Nov 2024	22	6	3	31
Dec 2024	17	6	5	28
Jan 2025	28	12	1	41
Feb 2025	33	8	0	41
Mar 2025	25	12	3	40
Apr 2025	22	9	0	31
May 2025	33	5	6	44
Jun 2025	41	9	0	50
Jul 2025	40	9	4	53
Aug 2025	55	19	0	74
Sep 2025	71	16	2	89
Oct 2025	32	18	0	50
Nov 2025	29	19	3	51
Dec 2025	6	7	0	13

Latest update: 06 Dec 2025

Short summary

The model and MIPAS satellite data show that there are three regions which contribute substantial pollution to the south Asian UTLS: the Asian summer monsoon (ASM), the North American monsoon (NAM) and the West African monsoon (WAM). However, penetration due to ASM convection reaches deeper into the UTLS compared to NAM and WAM outflow. Simulations show that westerly winds drive North American and European pollutants eastward where they can become part of the ASM and lifted to LS.