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Will black carbon mitigation dampen aerosol indirect forcing?

Chen, W.‐T. and Lee, Y. H. and Adams, P. J. and Nenes, A. and Seinfeld, J. H. (2010) Will black carbon mitigation dampen aerosol indirect forcing? Geophysical Research Letters, 37 . Art. No. L09801. ISSN 0094-8276.

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[1] If mitigation of black carbon (BC) particulate matter is accompanied by a decrease in particle number emissions, and thereby by a decrease in global cloud condensation nuclei (CCN) concentrations, a decrease in global cloud radiative forcing (a reverse “cloud albedo effect”) results. We consider two present-day mitigation scenarios: 50% reduction of primary black carbon/organic carbon (BC/OC) mass and number emissions from fossil fuel combustion (termed HF), and 50% reduction of primary BC/OC mass and number emissions from all primary carbonaceous sources (fossil fuel, domestic biofuel, and biomass burning) (termed HC). Radiative forcing effects of these scenarios are assessed through present-day equilibrium climate simulations. Global average top-of-the-atmosphere changes in radiative forcing for the two scenarios, relative to present day conditions, are +0.13 ± 0.33 W m^(−2) (HF) and + 0.31 ± 0.33 W m^(−2) (HC).

Item Type:Article
Related URLs:
URLURL TypeDescription
Nenes, A.0000-0003-3873-9970
Seinfeld, J. H.0000-0003-1344-4068
Additional Information:© 2010 by the American Geophysical Union. Received 16 February 2010; accepted 29 March 2010; published 1 May 2010. This work was supported by the U.S. Environmental Protection Agency under Science To Achieve Results (STAR) grant RD83337001 and NASA grant NNX08AL85G.
Funding AgencyGrant Number
Environmental Protection Agency (EPA)RD83337001
Subject Keywords:black carbon
Record Number:CaltechAUTHORS:20100524-143110498
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Official Citation:Chen, W.‐T., Y. H. Lee, P. J. Adams, A. Nenes, and J. H. Seinfeld (2010), Will black carbon mitigation dampen aerosol indirect forcing?, Geophys. Res. Lett., 37, L09801, doi:10.1029/2010GL042886.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:18411
Deposited By: Ruth Sustaita
Deposited On:28 Jun 2010 17:10
Last Modified:03 Oct 2019 01:42

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