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| Titel |
Short-lived climate forcers from current shipping and petroleum activities in the Arctic |
| VerfasserIn |
K. Ødemark, S. B. Dalsøren, B. H. Samset, T. K. Berntsen, J. S. Fuglestvedt, G. Myhre |
| 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 ; 12, no. 4 ; Nr. 12, no. 4 (2012-02-21), S.1979-1993 |
| Datensatznummer |
250010735
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| Publikation (Nr.) |
 copernicus.org/acp-12-1979-2012.pdf |
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| Zusammenfassung |
| Emissions of short-lived climate forcers (SLCF) in the Arctic region are
expected to increase, notably from shipping and petroleum extraction. We here
discuss changes in atmospheric SLCF concentrations and resulting radiative
forcing (RF) from present day shipping and petroleum activities in the
Arctic. The three-dimensional chemistry transport OsloCTM2 and a state of the
art radiative forcing model are used, based on a coherent dataset of present
day Arctic emissions. We find that the net RF of SLCF of shipping in the
Arctic region is negative, mainly due to the direct and indirect RF effects
of sulphate emissions, while the net RF of SLCF of petroleum extraction is
positive, mainly due to the effects of black carbon aerosols in the air and
deposited on snow. Strong seasonal variations of the sensitivities to
emissions are found. In terms of annual mean values we find that the Arctic
sensitivities to SLCF is similar to global average sensitivities. One
exception to this is the stronger snow/ice albedo effect from BC emissions. |
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