Dehydration and low ozone in the tropopause layer over the Asian monsoon caused by tropical cyclones: Lagrangian transport calculations using ERA-Interim and ERA5 reanalysis data

Li, Dan; Vogel, Bärbel; Müller, Rolf; Bian, Jianchun; Günther, Gebhard; Ploeger, Felix; Li, Qian; Zhang, Jinqiang; Bai, Zhixuan; Vömel, Holger; Riese, Martin

doi:https://doi.org/10.5194/acp-20-4133-2020

Articles | Volume 20, issue 7

https://doi.org/10.5194/acp-20-4133-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

StratoClim stratospheric and upper tropospheric processes...

https://doi.org/10.5194/acp-20-4133-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 7

Research article

|

07 Apr 2020

Research article |

| 07 Apr 2020

Dehydration and low ozone in the tropopause layer over the Asian monsoon caused by tropical cyclones: Lagrangian transport calculations using ERA-Interim and ERA5 reanalysis data

Dan Li, Bärbel Vogel, Rolf Müller, Jianchun Bian, Gebhard Günther, Felix Ploeger, Qian Li, Jinqiang Zhang, Zhixuan Bai, Holger Vömel, and Martin Riese

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Final revised paper (published on 07 Apr 2020)
Preprint (discussion started on 24 Sep 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Comments on "Dehydration and low ozone in the tropopause layer over the Asian monsoon caused by tropical cyclones: Lagrangian transport calculations using ERA-Interim and ERA5 reanalysis data" by Li et al', Anonymous Referee #1, 22 Oct 2019
RC2: 'Review on: acp-2019-816 by Dan Li et al.', Anonymous Referee #2, 24 Oct 2019
RC3: 'Report on "Dehydration and low ozone in the tropopause layer over the Asian monsoon caused by tropical cyclones: Lagrangian transport calculations using ERA-Interim and ERA5 reanalysis data" by Dan Li et al.', Anonymous Referee #3, 11 Nov 2019
AC1: 'Replies to Referee Comments', Dan Li, 29 Jan 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Dan Li on behalf of the Authors (29 Jan 2020) Author's response Manuscript

ED: Publish as is (03 Mar 2020) by Timothy J. Dunkerton

AR by Dan Li on behalf of the Authors (10 Mar 2020)

Short summary

Low ozone and low water vapour signatures in the UTLS were investigated using balloon-borne measurements and trajectory calculations. The results show that deep convection in tropical cyclones over the western Pacific transports boundary air parcels with low ozone into the tropopause region. Subsequently, these air parcels are dehydrated when passing the lowest temperature region (< 190 K) during quasi-horizontal advection.