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Sources of Variability in the Stratospheric Column of Nitrogen DioxideInstruments such as the Global Ozone Monitoring Experiment (GOME, on the European Remote Sensing Satellite (ERS-2), launched 1995), the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY, on ENVISAT, to be launched July 2001) and the Ozone Monitoring Instrument (OMI on EOS Aura, to be launched 2003) make measurements of the total column of NO2. There is interest in separating the stratospheric and tropospheric contributions to the column, as the tropospheric column provides a measure of pollution. We are using a 3D chemistry and transport model driven by winds from the Goddard Space Flight Center Data Assimilation System to examine variability in the stratospheric NO2 column. Model results for NOx = NO + NO2 + 2N2O5 will be shown to compare well with sunset observations from the Halogen Occultation Experiment on the Upper Atmosphere Research Satellite, and to exhibit similar temporal and spatial dependence. Partitioning between NO, NO2, and N2O5 is also shown to compare well with observations. This good agreement supports the use of simulated fields in the stratosphere to derive the tropospheric column from the total column. Preliminary comparisons of the tropospheric column with model simulations for the troposphere will also be shown.
Document ID
20020015617
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Douglass, Anne
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Gleason, James
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Chin, Mian
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Einaudi, Franco
Date Acquired
August 20, 2013
Publication Date
January 1, 2001
Subject Category
Geophysics
Meeting Information
Meeting: 8th International Association of Meteorology and Atmospheric Sciences Symposium
Location: Innsbruck
Country: Austria
Start Date: July 10, 2001
End Date: July 18, 2001
Sponsors: International Association of Meteorology and Atmospheric Sciences
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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