On the role of tropopause folds in summertime tropospheric ozone over the eastern Mediterranean and the Middle East

Akritidis, Dimitris; Pozzer, Andrea; Zanis, Prodromos; Tyrlis, Evangelos; Škerlak, Bojan; Sprenger, Michael; Lelieveld, Jos

doi:10.5194/acp-16-14025-2016

Articles | Volume 16, issue 21

https://doi.org/10.5194/acp-16-14025-2016

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

Special issue:

The Modular Earth Submodel System (MESSy) (ACP/GMD inter-journal...

https://doi.org/10.5194/acp-16-14025-2016

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

Articles | Volume 16, issue 21

Research article

|

11 Nov 2016

Research article |

| 11 Nov 2016

On the role of tropopause folds in summertime tropospheric ozone over the eastern Mediterranean and the Middle East

Dimitris Akritidis, Andrea Pozzer, Prodromos Zanis, Evangelos Tyrlis, Bojan Škerlak, Michael Sprenger, and Jos Lelieveld

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Cumulative views and downloads (calculated since 13 Jul 2016)

Month	HTML	PDF	XML	Total
Jul 2016	57	29	3	89
Aug 2016	17	5	1	23
Sep 2016	14	4	0	18
Oct 2016	17	2	6	25
Nov 2016	85	46	6	137
Dec 2016	15	10	0	25
Jan 2017	20	10	1	31
Feb 2017	18	13	1	32
Mar 2017	22	25	2	49
Apr 2017	28	15	2	45
May 2017	31	17	1	49
Jun 2017	29	8	3	40
Jul 2017	20	6	0	26
Aug 2017	15	12	3	30
Sep 2017	15	16	3	34
Oct 2017	23	24	2	49
Nov 2017	18	24	0	42
Dec 2017	14	11	2	27
Jan 2018	20	12	1	33
Feb 2018	14	6	0	20
Mar 2018	16	18	1	35
Apr 2018	12	17	0	29
May 2018	17	20	1	38
Jun 2018	12	20	0	32
Jul 2018	10	14	0	24
Aug 2018	22	16	0	38
Sep 2018	15	19	0	34
Oct 2018	21	19	4	44
Nov 2018	14	20	0	34
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Oct 2024	25	9	0	34
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Oct 2025	42	29	0	71
Nov 2025	21	17	4	42

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Short summary

We investigate the contribution of tropopause folds in the summertime tropospheric ozone pool over the eastern Mediterranean and the Middle East. For this purpose we use the EMAC atmospheric chemistry–climate model and a fold identification algorithm. A clear increase of ozone is found in the middle troposphere due to fold activity. The interannual variability of near-surface ozone over the eastern Mediterranean is related to that of both tropopause folds and ozone in the free troposphere.