In situ observations of CH2Cl2 and CHCl3 show efficient transport pathways for very short-lived species into the lower stratosphere via the Asian and the North American summer monsoon

Lauther, Valentin; Vogel, Bärbel; Wintel, Johannes; Rau, Andrea; Hoor, Peter; Bense, Vera; Müller, Rolf; Volk, C. Michael

doi:https://doi.org/10.5194/acp-22-2049-2022

Articles | Volume 22, issue 3

https://doi.org/10.5194/acp-22-2049-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

WISE: Wave-driven isentropic exchange in the extratropical...

https://doi.org/10.5194/acp-22-2049-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 3

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14 Feb 2022

Research article | Highlight paper |

| 14 Feb 2022

In situ observations of CH₂Cl₂ and CHCl₃ show efficient transport pathways for very short-lived species into the lower stratosphere via the Asian and the North American summer monsoon

Valentin Lauther, Bärbel Vogel, Johannes Wintel, Andrea Rau, Peter Hoor, Vera Bense, Rolf Müller, and C. Michael Volk

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Cumulative views and downloads (calculated since 18 Oct 2021)

Month	HTML	PDF	XML	Total
Oct 2021	156	53	2	211
Nov 2021	90	28	6	124
Dec 2021	19	4	1	24
Jan 2022	57	30	5	92
Feb 2022	359	89	8	456
Mar 2022	235	42	2	279
Apr 2022	117	23	3	143
May 2022	87	18	0	105
Jun 2022	117	16	5	138
Jul 2022	150	16	0	166
Aug 2022	197	14	0	211
Sep 2022	117	7	0	124
Oct 2022	104	12	2	118
Nov 2022	137	13	0	150
Dec 2022	93	13	1	107
Jan 2023	69	22	0	91
Feb 2023	70	13	0	83
Mar 2023	71	21	0	92
Apr 2023	74	15	0	89
May 2023	55	16	0	71
Jun 2023	69	12	1	82
Jul 2023	52	18	0	70
Aug 2023	61	19	3	83
Sep 2023	59	16	0	75
Oct 2023	54	14	2	70
Nov 2023	34	7	0	41
Dec 2023	41	18	0	59
Jan 2024	252	15	1	268
Feb 2024	34	16	0	50
Mar 2024	29	35	3	67
Apr 2024	38	12	4	54
May 2024	43	9	2	54
Jun 2024	85	15	23	123
Jul 2024	453	11	3	467
Aug 2024	47	9	3	59
Sep 2024	27	8	0	35
Oct 2024	35	4	2	41
Nov 2024	34	10	3	47
Dec 2024	23	6	1	30
Jan 2025	35	13	0	48
Feb 2025	33	11	0	44
Mar 2025	43	14	2	59
Apr 2025	44	21	5	70
May 2025	37	8	0	45

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Short summary

We show airborne in situ measurements of the very short-lived ozone-depleting substances CH₂Cl₂ and CHCl₃, revealing particularly high concentrations of both species in the lower stratosphere. Back-trajectory calculations and 3D model simulations show that the air masses with high concentrations originated in the Asian boundary layer and were transported via the Asian summer monsoon. We also identify a fast transport pathway into the stratosphere via the North American monsoon and by hurricanes.

In situ observations of CH₂Cl₂ and CHCl₃ show efficient transport pathways for very short-lived species into the lower stratosphere via the Asian and the North American summer monsoon

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11 citations as recorded by crossref.

11 citations as recorded by crossref.


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