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Large-scale tropospheric transport in the Chemistry--Climate Model Initiative (CCMI) simulations

Orbe, Clara and Yang, Huang and Waugh, D. W. and Zeng, G. and Morgenstern, Olaf and Kinnison, D. E. and Lamarque, J.-F. and Tilmes, S. and Plummer, D. A. and Scinocca, J. F. and Josse, B. and Marecal, V. and Jöckel, Patrick and Oman, L. D. and Strahan, S. E. and Deushi, M. and Tanaka, T. Y. and Yoshida, K. and Akiyoshi, H. and Yamashita, Y. and Stenke, A. and Revell, L. and Sukhodolov, T. and Rozanov, E. and Pitari, G. and Visioni, D. and Stone, K. A. and Schofield, R. and Banerjee, Antara (2018) Large-scale tropospheric transport in the Chemistry--Climate Model Initiative (CCMI) simulations. Atmospheric Chemistry and Physics (ACP), 18 (10), pp. 7217-7235. Copernicus Publications. DOI: 10.5194/acp-18-7217-2018 ISSN 1680-7316

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Official URL: https://www.atmos-chem-phys.net/18/7217/2018/

Abstract

Understanding and modeling the large-scale transport of trace gases and aerosols is important for interpreting past (and projecting future) changes in atmospheric composition. Here we show that there are large differences in the global-scale atmospheric transport properties among the models participating in the IGAC SPARC Chemistry–Climate Model Initiative (CCMI). Specifically, we find up to 40 % differences in the transport timescales connecting the Northern Hemisphere (NH) midlatitude surface to the Arctic and to Southern Hemisphere high latitudes, where the mean age ranges between 1.7 and 2.6 years. We show that these differences are related to large differences in vertical transport among the simulations, in particular to differences in parameterized convection over the oceans. While stronger convection over NH midlatitudes is associated with slower transport to the Arctic, stronger convection in the tropics and subtropics is associated with faster interhemispheric transport. We also show that the differences among simulations constrained with fields derived from the same reanalysis products are as large as (and in some cases larger than) the differences among free-running simulations, most likely due to larger differences in parameterized convection. Our results indicate that care must be taken when using simulations constrained with analyzed winds to interpret the influence of meteorology on tropospheric composition.

Item URL in elib:https://elib.dlr.de/120173/
Document Type:Article
Title:Large-scale tropospheric transport in the Chemistry--Climate Model Initiative (CCMI) simulations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Orbe, ClaraGESTAR, Columbia, MD, USAUNSPECIFIED
Yang, HuangUNSPECIFIEDUNSPECIFIED
Waugh, D. W.UNSPECIFIEDUNSPECIFIED
Zeng, G.UNSPECIFIEDUNSPECIFIED
Morgenstern, OlafNIWA, Wellington, NeuseelandUNSPECIFIED
Kinnison, D. E.UNSPECIFIEDUNSPECIFIED
Lamarque, J.-F.UNSPECIFIEDUNSPECIFIED
Tilmes, S.UNSPECIFIEDUNSPECIFIED
Plummer, D. A.UNSPECIFIEDUNSPECIFIED
Scinocca, J. F.UNSPECIFIEDUNSPECIFIED
Josse, B.UNSPECIFIEDUNSPECIFIED
Marecal, V.UNSPECIFIEDUNSPECIFIED
Jöckel, PatrickDLR, IPAhttps://orcid.org/0000-0002-8964-1394
Oman, L. D.UNSPECIFIEDUNSPECIFIED
Strahan, S. E.UNSPECIFIEDUNSPECIFIED
Deushi, M.UNSPECIFIEDUNSPECIFIED
Tanaka, T. Y.UNSPECIFIEDUNSPECIFIED
Yoshida, K.UNSPECIFIEDUNSPECIFIED
Akiyoshi, H.UNSPECIFIEDUNSPECIFIED
Yamashita, Y.UNSPECIFIEDUNSPECIFIED
Stenke, A.UNSPECIFIEDUNSPECIFIED
Revell, L.UNSPECIFIEDUNSPECIFIED
Sukhodolov, T.UNSPECIFIEDUNSPECIFIED
Rozanov, E.UNSPECIFIEDUNSPECIFIED
Pitari, G.UNSPECIFIEDUNSPECIFIED
Visioni, D.UNSPECIFIEDUNSPECIFIED
Stone, K. A.UNSPECIFIEDUNSPECIFIED
Schofield, R.UNSPECIFIEDUNSPECIFIED
Banerjee, AntaraColumbia Univ., New York, NY, USAUNSPECIFIED
Date:25 May 2018
Journal or Publication Title:Atmospheric Chemistry and Physics (ACP)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:18
DOI :10.5194/acp-18-7217-2018
Page Range:pp. 7217-7235
Publisher:Copernicus Publications
ISSN:1680-7316
Status:Published
Keywords:troposphere, transport, CCMI, EMAC, MESSy, ESCiMo
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Verkehrsentwicklung und Umwelt II (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Earth System Modelling
Deposited By: Jöckel, Dr. Patrick
Deposited On:08 Jun 2018 14:08
Last Modified:02 May 2019 13:59

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