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CO_2 in the upper troposphere: Influence of stratosphere-troposphere exchange

Shia, Run-Lie and Liang, Mao-Chang and Miller, Charles E. and Yung, Yuk L. (2006) CO_2 in the upper troposphere: Influence of stratosphere-troposphere exchange. Geophysical Research Letters, 33 (14). Art. No. L14814. ISSN 0094-8276. https://resolver.caltech.edu/CaltechAUTHORS:20140822-085810245

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Abstract

A two-dimensional transport model constrained to measured surface CO_2 concentrations was used to simulate the spatial and temporal variation of CO_2 in the atmosphere for the period from 1975 to 2004. We find that the amplitude, phase and shape of the CO_2 seasonal cycle vary as a function of both altitude and latitude. Cross tropopause exchanges, especially the downward branch of the Brewer-Dobson circulation, which brings stratospheric air to the upper troposphere at middle and high latitudes, change the CO_2 concentration and seasonal cycle in the extra-tropics. The model results match recent aircraft measurements of CO_2 in the upper troposphere (Matsueda et al., 2002) remarkably well. We conclude that upper tropospheric CO_2 volume mixing ratios will provide a valuable tool for validating vertical transport. The implications of the CO_2 variation caused by the stratosphere-troposphere exchange for remote sensing of CO_2 are discussed.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/2006GL026141DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/2006GL026141/abstractPublisherArticle
ORCID:
AuthorORCID
Shia, Run-Lie0000-0003-1911-3120
Liang, Mao-Chang0000-0002-5294-9344
Miller, Charles E.0000-0002-9380-4838
Yung, Yuk L.0000-0002-4263-2562
Alternate Title:CO2 in the upper troposphere: Influence of stratosphere-troposphere exchange
Additional Information:© 2006 The American Geophysical Union. Received 24 February 2006; Revised 19 May 2006; Accepted 5 June 2006; Published 26 July 2006. We thank M. Gerstell, A. Ingersoll, N. Krakauer and L. Chen for reading the manuscript and helpful comments. This work was supported by NASA grant NNG04GD76G to California Institute of Technology. The building of the tropospheric model was supported by NSF grant ATM-0225829 to California Institute of Technology. The research at the Jet Propulsion Laboratory, California Institute of Technology, was performed under contract with the National Aeronautics and Space Administration.
Funders:
Funding AgencyGrant Number
NASANNG04GD76G
NSFATM-0225829
NASA/JPL/CaltechUNSPECIFIED
Issue or Number:14
Record Number:CaltechAUTHORS:20140822-085810245
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140822-085810245
Official Citation:Shia, R.-L., Liang, M.-C., Miller, C. E., & Yung, Y. L. (2006). CO2 in the upper troposphere: Influence of stratosphere-troposphere exchange. Geophysical Research Letters, 33(14), L14814. doi: 10.1029/2006gl026141
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48797
Collection:CaltechAUTHORS
Deposited By: Joanne McCole
Deposited On:22 Aug 2014 16:36
Last Modified:09 Mar 2020 13:19

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