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Comparison of high-latitude line-of-sight ozone column density with derived ozone fields and the effects of horizontal inhomogeneity.

Authors :
Swartz, W. H.
Yee, J.-H.
Randall, C. E.
Shetter, R. E.
Browell, E. V.
Burris, J. F.
McGee, T. J.
Avery, M. A.
Source :
Atmospheric Chemistry & Physics Discussions; 2005, Vol. 5 Issue 6, p11617-11642, 26p
Publication Year :
2005

Abstract

Extensive ozone measurements were made during the second SAGE III Ozone Loss and Validation Experiment (SOLVE II). We compare high-latitude line-of-sight (LOS) slant column ozone measurements from the NASA DC-8 to ozone simulated by forward integration of measurement-derived ozone fields constructed both with and without the assumption of horizontal homogeneity. The average bias and rms error of the simulations assuming homogeneity are relatively small (-6 and 10%, respectively) in comparison to the LOS measurements. The comparison improves significantly (-2% bias; 8% rms error) using forward integrations of three-dimensional proxy ozone fields reconstructed from potential vorticity-O<subscript>3</subscript> correlations. The comparisons provide additional verification of the proxy fields and quantify the influence of large-scale ozone inhomogeneity. The spatial inhomogeneity of the atmosphere is a source of error in the retrieval of trace gas vertical profiles and column abundance from LOS measurements, as well as a complicating factor in intercomparisons that include LOS measurements at large solar zenith angles. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
16807367
Volume :
5
Issue :
6
Database :
Complementary Index
Journal :
Atmospheric Chemistry & Physics Discussions
Publication Type :
Academic Journal
Accession number :
21388482
Full Text :
https://doi.org/10.5194/acpd-5-11617-2005