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| Titel |
Total aerosol effect: radiative forcing or radiative flux perturbation? |
| VerfasserIn |
U. Lohmann, L. Rotstayn, T. Storelvmo, A. Jones, S. Menon, J. Quaas, A. M. L. Ekman, D. Koch, R. Ruedy |
| 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. 7 ; Nr. 10, no. 7 (2010-04-06), S.3235-3246 |
| Datensatznummer |
250008326
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| Publikation (Nr.) |
 copernicus.org/acp-10-3235-2010.pdf |
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| Zusammenfassung |
| Uncertainties in aerosol radiative forcings, especially those
associated with clouds, contribute to a large extent to uncertainties
in the total anthropogenic forcing. The interaction of aerosols with
clouds and radiation introduces feedbacks which can affect the rate of
precipitation formation. In former assessments of aerosol radiative forcings, these
effects have not been quantified. Also, with global aerosol-climate models simulating
interactively aerosols and cloud microphysical properties, a
quantification of the aerosol forcings in the traditional way is
difficult to define properly. Here we argue that fast feedbacks should be
included because they act quickly compared with the time
scale of global warming. We show that for different forcing agents
(aerosols and greenhouse gases) the radiative forcings as
traditionally defined agree rather well with estimates from a method,
here referred to as radiative flux perturbations (RFP), that takes
these fast feedbacks and interactions into account. Based on our
results, we recommend RFP as a valid option to compare different
forcing agents, and to compare the effects of particular forcing
agents in different models. |
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