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The atmospheric column abundance of IO: Implications for stratospheric ozone

Wennberg, P. O. and Brault, J. W. and Hanisco, T. F. and Salawitch, R. J. and Mount, George H. (1997) The atmospheric column abundance of IO: Implications for stratospheric ozone. Journal of Geophysical Research D, 102 (D7). pp. 8887-8898. ISSN 0148-0227. https://resolver.caltech.edu/CaltechAUTHORS:20140625-112244759

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Abstract

Absorption attributable to atmospheric IO is observed in high-resolution, high air mass solar spectra taken at the National Solar Observatory, Kitt Peak, Arizona, in March 1995. These observations, together with cross sections measured in the laboratory for the IO {A^(2)Π3/2←X^(2)Π_(3/2) (2,0)} rotationally resolved electronic transition, are consistent with a total stratospheric iodine mixing ratio of 0.2 (+0.3 −0.2) parts per trillion by volume. This result, combined with recent laboratory measurements of the rate of the reactions of IO with other halogen species, suggests that iodine chemistry is not responsible for the reductions observed in lower stratospheric ozone during the last several decades.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/96JD03712DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/96JD03712/abstractPublisherArticle
ORCID:
AuthorORCID
Wennberg, P. O.0000-0002-6126-3854
Hanisco, T. F.0000-0001-9434-8507
Additional Information:© 1997 American Geophysical Union. Received January 3, 1996; revised November 17, 1996; accepted November 18, 1996. Paper number 96JD03712. We would like to thank the many individuals and programs that contributed to this work. At Harvard, support for the purchase of the Bruker FTS was provided through grants from the National Science Foundation (ATM-8921312) and the Empire State Electric Energy Research Corporation. Support for P.O.W. and T.F.H. was provided by the National Aeronautical and Space Administration (NASA) Upper Atmosphere Research Program (NAG-1-1305). At Kitt Peak we would like to thank the National Solar Observatory for use of the McMath-Pierce telescope and the solar spectrometer. Research by R.J.S. at the Jet Propulsion Laboratory, California Institute of Technology, was performed under contract with NASA. Paul Newman from NASA Goddard kindly provided information on the tropopauseh eight above Kitt Peak. We thank M.J. Kurylo, A. R. Ravishankara, and J .-P. Pommereau for sharing information from their laboratories on the kinetics and photochemistry of iodine prior to publication. Finally, we would also like to thank Kathy Perkins, Kelly Chance, Stan Sander, and Susan Solomon for their comments on the manuscript.
Funders:
Funding AgencyGrant Number
NSFATM-8921312
Empire State Electric Energy Research CorporationUNSPECIFIED
NASANAG-1-1305
NASA/JPL/CaltechUNSPECIFIED
Issue or Number:D7
Record Number:CaltechAUTHORS:20140625-112244759
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140625-112244759
Official Citation:Wennberg, P. O., J. W. Brault, T. F. Hanisco, R. J. Salawitch, and G. H. Mount (1997), The atmospheric column abundance of IO: Implications for stratospheric ozone, J. Geophys. Res., 102(D7), 8887–8898, doi:10.1029/96JD03712.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46504
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:26 Jun 2014 16:46
Last Modified:09 Mar 2020 13:18

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