Simulating the TOPSE Campaign: Review of Key Results from two Chemical Transport Models
Abstract
The Atmospheric Chemistry Division at NCAR ran two chemical transport models in near real-time during the TOPSE (Tropospheric Ozone Production about the Spring Equinox) campaign: MOZART (Model for Ozone and Related Chemical Tracers) and HANK. While aspects of the formulation of these two models are similar (the chemical mechanism, the emissions, and the surface deposition) significant differences remain. For example, MOZART was run globally using ECMWF (European Centre for Medium-Range Weather Forecasts) meteorological analysis, while HANK was run on a near hemispheric scale using meteorology from the MM5 model (Pennsylvania State University/National Center for Atmospheric Research Mesoscale Modeling System) with initial and boundary conditions from NCEP (National Centers for Environmental Prediction). Key aspects of these modeling efforts are summarized and an evaluation of both models against TOPSE measurements is presented. In general both models simulate the same species quite well (e.g., ozone and CO), while other species are simulated rather poorly (e.g., HNO3). The consistency between the two models suggests that certain processes are not well understood. Model sensitivities are reviewed, and the seasonal cycle of tropospheric species is examined.
- Publication:
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AGU Spring Meeting Abstracts
- Pub Date:
- May 2001
- Bibcode:
- 2001AGUSM...A22B05H
- Keywords:
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- 0365 Troposphere--composition and chemistry;
- 0368 Troposphere--;
- onstituent transport and chemistry