Indirect Aerosol Forcing, Quasi Forcing, and Climate Response
نویسندگان
چکیده
منابع مشابه
Radiative forcing and climate response
We examine the sensitivity of a climate model to a wide range of radiative forcings, including changes ofsolar irradiance, atmospheric CO2, 03, CFCs, clouds, aerosols, urface •bedo, and a "ghost" forcing introduced at arbitrary heights, latitudes, longitudes, easons, and times of day. We show that, in general, the climate response, specifically the global mean temperature change, issensitive to...
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Organics are among the most abundant aerosol components in the atmosphere. However, there are still large uncertainties with emissions of primary organic aerosol (POA) and volatile organic compounds (VOCs) (precursor gases of secondary organic aerosol, SOA), formation of SOA, and chemical and physical properties (e.g., hygroscopicity) of POA and SOA. All these may have significant impacts on ae...
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[1] The main uncertainty in anthropogenic forcing of the Earth’s climate stems from pollution aerosols, particularly their ‘‘indirect effect’’ whereby aerosols modify cloud properties. We develop a new methodology to derive a measurement-based estimate using almost exclusively information from an Earth radiation budget instrument (CERES) and a radiometer (MODIS). We derive a statistical relatio...
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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/O...
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A clear understanding of particle formation mechanisms is critical for assessing aerosol indirect radiative forcing and associated climate feedback processes. Recent studies reveal the importance of ion-mediated nucleation (IMN) in generating new particles and cloud condensation nuclei (CCN) in the atmosphere. Here we implement the IMN scheme into the Community Atmosphere Model version 5 (CAM5)...
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ژورنال
عنوان ژورنال: Journal of Climate
سال: 2001
ISSN: 0894-8755,1520-0442
DOI: 10.1175/1520-0442(2001)014<2960:iafqfa>2.0.co;2