Publication Abstracts

Orbe et al. 2018

Orbe, C., H. Yang, D.W. Waugh, G. Zeng, O. Morgenstern, D.E. Kinnison, J.-F. Lamarque, S. Tilmes, D.A. Plummer, J.F. Scinnoca, B. Josse, V. Marecal, P. Jöckel, L.D. Oman, S.E. Strahan, M. Deushi, T.Y. Tanaka, K. Yoshida, H. Akiyoshi, Y. Yamashita, A. Stenke, L. Revell, T. Sukhodolov, E. Rozanov, G. Pitari, D. Visioni, K.A. Stone, R. Schofield, and A. Banerjee, 2018: Large-scale tropospheric transport in the Chemistry Climate Model Initiative (CCMI) simulations. Atmos. Chem. Phys., 18, 7217-7235, doi:10.5194/acp-18-7217-2018.

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 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 years and 2.6 years. We show that these differences are related to large differences in vertical transport among the simulations and, 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, 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.

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BibTeX Citation

  author={Orbe, C. and Yang, H. and Waugh, D. W. and Zeng, G. and Morgenstern, O. and Kinnison, D. E. and Lamarque, J.-F. and Tilmes, S. and Plummer, D. A. and Scinnoca, J. F. and Josse, B. and Marecal, V. and Jöckel, P. 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, A.},
  title={Large-scale tropospheric transport in the Chemistry Climate Model Initiative (CCMI) simulations},
  journal={Atmospheric Chemistry and Physics},

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RIS Citation

ID  - or00100k
AU  - Orbe, C.
AU  - Yang, H.
AU  - Waugh, D. W.
AU  - Zeng, G.
AU  - Morgenstern, O.
AU  - Kinnison, D. E.
AU  - Lamarque, J.-F.
AU  - Tilmes, S.
AU  - Plummer, D. A.
AU  - Scinnoca, J. F.
AU  - Josse, B.
AU  - Marecal, V.
AU  - Jöckel, P.
AU  - Oman, L. D.
AU  - Strahan, S. E.
AU  - Deushi, M.
AU  - Tanaka, T. Y.
AU  - Yoshida, K.
AU  - Akiyoshi, H.
AU  - Yamashita, Y.
AU  - Stenke, A.
AU  - Revell, L.
AU  - Sukhodolov, T.
AU  - Rozanov, E.
AU  - Pitari, G.
AU  - Visioni, D.
AU  - Stone, K. A.
AU  - Schofield, R.
AU  - Banerjee, A.
PY  - 2018
TI  - Large-scale tropospheric transport in the Chemistry Climate Model Initiative (CCMI) simulations
JA  - Atmos. Chem. Phys.
JO  - Atmospheric Chemistry and Physics
VL  - 18
SP  - 7217
EP  - 7235
DO  - 10.5194/acp-18-7217-2018
ER  -

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