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| Titel |
A new feedback mechanism linking forests, aerosols, and climate |
| VerfasserIn |
M. Kulmala  , T. Suni, K. E. J. Lehtinen, M. Maso, M. Boy, A. Reissell, Ü. Rannik, P. Aalto, P. Keronen, H. Hakola, J. Bäck, T. Hoffmann, T. Vesala, P. Hari |
| 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 ; 4, no. 2 ; Nr. 4, no. 2 (2004-03-30), S.557-562 |
| Datensatznummer |
250001612
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| Publikation (Nr.) |
 copernicus.org/acp-4-557-2004.pdf |
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| Zusammenfassung |
| The possible connections between the carbon balance of
ecosystems and aerosol-cloud-climate interactions play a significant role in
climate change studies. Carbon dioxide is a greenhouse gas, whereas the net
effect of atmospheric aerosols is to cool the climate. Here, we investigated the
connection between forest-atmosphere carbon exchange and aerosol dynamics in the
continental boundary layer by means of multiannual data sets of particle
formation and growth rates, of CO2 fluxes, and of monoterpene
concentrations in a Scots pine forest in southern Finland. We suggest a new,
interesting link and a potentially important feedback among forest ecosystem
functioning, aerosols, and climate: Considering that globally increasing
temperatures and CO2 fertilization are likely to lead to increased
photosynthesis and forest growth, an increase in forest biomass would increase
emissions of non-methane biogenic volatile organic compounds and thereby enhance
organic aerosol production. This feedback mechanism couples the climate effect
of CO2 with that of aerosols in a novel way. |
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