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Standard climate models radiation codes underestimate black carbon radiative forcing

Myhre, Gunnar; Samset, Bjørn Hallvard
Peer reviewed, Journal article
Published version
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Standard+climate+models+radiation+codes+underestimate+black+carbon+radiative+forcing.pdf (275.1Kb)
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http://hdl.handle.net/11250/2465181
Utgivelsesdato
2015
Metadata
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  • Journal articles [557]
Originalversjon
Atmospheric Chemistry and Physics. 2015, 15 (5), 2883-2888.   10.5194/acp-15-2883-2015
Sammendrag
Radiative forcing (RF) of black carbon (BC) in the atmosphere is estimated using radiative transfer codes of various complexities. Here we show that the two-stream radiative transfer codes used most in climate models give too strong forward scattering, leading to enhanced absorption at the surface and too weak absorption by BC in the atmosphere. Such calculations are found to underestimate the positive RF of BC by 10% for global mean, all sky conditions, relative to the more sophisticated multi-stream models. The underestimation occurs primarily for low surface albedo, even though BC is more efficient for absorption of solar radiation over high surface albedo.
Tidsskrift
Atmospheric Chemistry and Physics

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