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| Titel |
Modelling sea salt aerosol and its direct and indirect effects on climate |
| VerfasserIn |
X. Ma, K. Salzen, J. Li |
| 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 ; 8, no. 5 ; Nr. 8, no. 5 (2008-03-06), S.1311-1327 |
| Datensatznummer |
250005795
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| Publikation (Nr.) |
 copernicus.org/acp-8-1311-2008.pdf |
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| Zusammenfassung |
| A size-dependent sea salt aerosol parameterization was developed
based on the piecewise log-normal approximation (PLA) for aerosol size
distributions. Results of this parameterization from simulations with a
global climate model produce good agreement
with observations at the surface and for vertically-integrated
volume size distributions. The global and annual mean of the sea salt
burden is 10.1 mg m−2. The direct radiative forcing is calculated to be −1.52 and −0.60 W m−2
for clear sky and all sky, respectively. The
first indirect radiative forcing is about twice as large as the direct forcing
for all-sky (−1.34 W m−2). The results also show that the total
indirect forcing of sea salt is −2.9 W m−2 if climatic feedbacks
are taken into account. The sensitivity of the
forcings to changes in the burdens and sizes of sea salt particles was
also investigated based on additional simulations with a different sea salt
source function. |
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