Open AccessRadicals and reservoirs in the GMI chemistry and transport model: Comparison to measurements
Author(s) -
Douglass Anne R.,
Stolarski Richard S.,
Strahan Susan E.,
Connell Peter S.
Publication year - 2004
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2004jd004632
Subject(s) - stratosphere , ozone , environmental science , atmospheric sciences , data assimilation , atmospheric chemistry , meteorology , physics
We have used a three‐dimensional chemistry and transport model (CTM), developed under the Global Modeling Initiative (GMI), to carry out two simulations of the composition of the stratosphere under changing halogen loading for 1995 through 2030. The two simulations differ only in that one uses meteorological fields from a general circulation model while the other uses meteorological fields from a data assimilation system. A single year's winds and temperatures are repeated for each 36‐year simulation. We compare results from these two simulations with an extensive collection of data from satellite and ground‐based measurements for 1993–2000. Comparisons of simulated fields with observations of radical and reservoir species for some of the major ozone‐destroying compounds are of similar quality for both simulations. Differences in the upper stratosphere, caused by transport of total reactive nitrogen and methane, impact the balance among the ozone loss processes and the sensitivity of the two simulations to the change in composition.