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Kagawa & Hayashida 2003
Kagawa, A. and Hayashida, S. (2003). Analysis of ozone loss in the Arctic stratosphere during the late winter and spring of 1997 using the Chemical Species Mapping on Trajectories (CSMT) technique. Journal of Geophysical Research 108. doi: 10.1029/2002JD002824. issn: 0148-0227.

A scheme to create synoptic maps of stratospheric minor species from asynoptic satellite measurements using a photochemical box model and trajectory analysis was developed and named Chemical Species Mapping on Trajectories (CSMT). CSMT combined with Improved Limb Atmospheric Spectrometer (ILAS) data were used to study the Arctic ozone loss mechanism in the late winter and early spring of 1997. Long- and short-lived species in the stratosphere were successfully mapped by the CSMT initialized with ILAS-observed ozone, nitric acid, and nitrous oxide. Comparisons of CSMT-derived data and ozonesonde data, and/or other satellite data, validated the scheme. The comparisons showed the reliability of the scheme in mapping long- and short-lived species. A chemical ozone loss amount was estimated using the chemical model; the maximum ozone loss rate was about 34 ppbv/day in late February. The integrated ozone loss from 13 January to 31 March was 41%, averaged over the entire polar vortex. The effects of differences in polar stratospheric cloud composition and a possible warm bias in the temperature data set were examined, and only minor differences were found in the ozone loss amount. The derived ozone loss rates and integrated ozone loss are consistent with results from other studies. The Arctic ozone loss in the late winter and early spring of 1997 depended significantly on latitude and showed complex features: ozone loss occurred mainly at lower latitudes until late February; the region of significant ozone loss shifted to higher latitudes in March. The CSMT scheme shows good potential for various applications including detailed analyses of chemical mechanisms in the atmosphere.

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Abstract

Keywords
Atmospheric Composition and Structure, Middle atmosphere--composition and chemistry, Atmospheric Composition and Structure, Middle atmosphere--constituent transport and chemistry, Meteorology and Atmospheric Dynamics, Numerical modeling and data assimilation, Meteorology and Atmospheric Dynamics, Polar meteorology, Information Related to Geographic Region, Arctic region
Journal
Journal of Geophysical Research
http://www.agu.org/journals/jb/
Publisher
American Geophysical Union
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