Comparison of Surface Ozone At Tor-2 Sites With A Global Model
Abstract
Surface ozone concentrations are strongly influenced by local dry deposition rates, particularly when the boundary layer is shallow. This represents a major problem when comparing model output to surface observations, especially from global models with relatively coarse resolution and simplified boundary layer dynamics. To investigate this problem, we have used hourly ozone from stations in the TOR-2 database, and extracted both daytime average and daytime maximum values, and compared these with daily mid-afternoon values calculated by the global model STOCHEM, over the annual cycle. The model also simulates the fraction of ozone at the surface originating in the stratosphere, indicating the likely seasonal cycle in stratospheric contribution at each site, compared to in-situ tropospheric production.
- Publication:
-
EGS General Assembly Conference Abstracts
- Pub Date:
- 2002
- Bibcode:
- 2002EGSGA..27.4002S