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| Titel |
Off-line algorithm for calculation of vertical tracer transport in the troposphere due to deep convection |
| VerfasserIn |
D. A. Belikov, S. Maksyutov, M. Krol, A. Fraser, M. Rigby, H. Bian, A. Agusti-Panareda, D. Bergmann, P. Bousquet, P. Cameron-Smith, M. P. Chipperfield, A. Fortems-Cheiney, E. Gloor, K. Haynes, P. Hess, S. Houweling, S. R. Kawa, R. M. Law, Z. Loh, L. Meng, P. I. Palmer, P. K. Patra, R. G. Prinn, R. Saito, C. Wilson |
| 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 ; 13, no. 3 ; Nr. 13, no. 3 (2013-02-01), S.1093-1114 |
| Datensatznummer |
250017618
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| Publikation (Nr.) |
 copernicus.org/acp-13-1093-2013.pdf |
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| Zusammenfassung |
| A modified cumulus convection parametrisation scheme is presented.
This scheme computes the mass of air transported upward in a cumulus cell
using conservation of moisture and a detailed distribution of convective
precipitation provided by a reanalysis dataset. The representation of
vertical transport within the scheme includes entrainment and detrainment
processes in convective updrafts and downdrafts. Output from the proposed
parametrisation scheme is employed in the National Institute for
Environmental Studies (NIES) global chemical transport model driven by
JRA-25/JCDAS reanalysis. The simulated convective precipitation rate and
mass fluxes are compared with observations and reanalysis data. A simulation
of the short-lived tracer 222Rn is used to further evaluate the
performance of the cumulus convection scheme. Simulated distributions of
222Rn are evaluated against observations at the surface and in the free
troposphere, and compared with output from models that participated
in the TransCom-CH4 Transport Model Intercomparison. From this
comparison, we demonstrate that the proposed convective scheme in general is
consistent with observed and modeled results. |
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