HR: 12:05h
AN: A11G-07    [PDF]
TI: Evaluation of a Multi-Decadal Siimulation of Stratospheric Ozone by Comparison with Total Ozone Mapping Spectrometer (TOMS) Observations
AU: * Douglass, A R
EM: Anne.R.Douglass@nasa.gov
AF: Code 916, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Stolarski, R S
EM: Richard.S.Stolarski@nasa.gov
AF: Code 916, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Steenrod, S D
EM: Steenrod@arachnid.gsfc.nasa.gov
AF: SSAI, Code 916 NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Pawson, S
EM: spawson@gmao.nasa.gov
AF: Code 900.3 GMAO, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AB: One key application of atmospheric chemistry and transport models is prediction of the response of ozone and other constituents to various natural and anthropogenic perturbations. These include changes in composition, such as the previous rise and recent decline in emission of man-made chlorofluorcarbons, changes in aerosol loading due to volcanic eruptions, and changes in solar forcing. Comparisons of hindcast model results for the past few decades with observations are a key element of model evaluation and provide a sense of the reliability of model predictions. The 25-year data set from Total Ozone Mapping Spectrometers is a cornerstone of such model evaluation. Here we report evaluation of a three-dimensional multi-decadal simulation of stratospheric composition. Meteorological fields for this off-line calculation are taken from a 50-year simulation of a general circulation model. Model fields are compared with observations from TOMS and also with observations from the Stratospheric Aerosol and Gas Experiment (SAGE), Microwave Limb Sounder (MLS), Cryogenic Limb Array Etalon Spectrometer (CLAES), and the Halogen Occultation Experiment (HALOE). This overall evaluation will emphasize the spatial, seasonal, and interannual variability of the simulation compared with observed atmospheric variability.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0341 Middle atmosphere--constituent transport and chemistry (3334)
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting