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| Titel |
Numerical simulation of tropospheric injection of biomass burning products by pyro-thermal plumes |
| VerfasserIn |
C. Rio, F. Hourdin, A. Chédin |
| 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 ; 10, no. 8 ; Nr. 10, no. 8 (2010-04-16), S.3463-3478 |
| Datensatznummer |
250008351
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| Publikation (Nr.) |
 copernicus.org/acp-10-3463-2010.pdf |
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| Zusammenfassung |
| The thermal plume model, a mass-flux scheme originally developed to represent
the vertical transport by convective structures within the boundary layer, is
adapted to the representation of plumes generated by fires, with the aim of
estimating the height at which fire emissions are actually injected in the
atmosphere. The parameterization, which takes into account the excess of near
surface temperature induced by fires and the mixing between convective plumes
and environmental air,
is first evaluated on two well-documented fires. Simulations over Southern Africa
performed with the general circulation model LMDZ over one month show that the
CO2 can be injected far above the boundary layer height, leading to a
daily excess of CO2 in the mid-troposphere of an order of 2 ppmv. These
results agree with satellite retrievals of a diurnal cycle of CO2 in the free
troposphere over regions affected by biomass burning in the Tropics. |
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