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| Titel |
An evaluation of ozone dry deposition simulations in East Asia |
| VerfasserIn |
R. J. Park, S. K. Hong, H.-A. Kwon, S. Kim, A. Guenther, J.-H. Woo, C. P. Loughner |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 14, no. 15 ; Nr. 14, no. 15 (2014-08-11), S.7929-7940 |
| Datensatznummer |
250118933
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| Publikation (Nr.) |
 copernicus.org/acp-14-7929-2014.pdf |
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| Zusammenfassung |
| We use a 3-D regional atmospheric chemistry transport model (WRF-Chem) to
examine ozone dry deposition in East Asia, which is an important but
uncertain research area because of insufficient observation and numerical
studies focusing on East Asia. Here we compare two widely used dry deposition
parameterization schemes, the Wesely and M3DRY schemes, which are used in the
WRF-Chem and Community Multiscale Air Quality (CMAQ) models, respectively.
Simulated ozone dry deposition velocities with the two schemes under
identical meteorological conditions show considerable differences (a factor
of 2) owing to surface resistance parameterization discrepancies. Resulting
ozone concentrations differ by up to 10 ppbv for a monthly mean in May when
the peak ozone typically occurs in East Asia. An evaluation of the simulated
dry deposition velocities shows that the Wesely scheme calculates values with
more pronounced diurnal variation than the M3DRY and results in a good
agreement with the observations. However, we find significant changes in
simulated ozone concentrations using the Wesely scheme but with different
surface type data sets, indicating the high sensitivity of ozone deposition
calculations to the input data. The need is high for observations to
constrain the dry deposition parameterization and its input data to improve
the use of air quality models for East Asia. |
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