Indirect Aerosol Forcing by Homogeneous and Inhomogeneous Clouds
نویسندگان
چکیده
منابع مشابه
Indirect Radiative Forcing by Ion-Mediated Nucleation of Aerosol
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)...
متن کاملHow Important is Organic Aerosol Hygroscopicity to Aerosol Indirect Forcing?
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...
متن کاملEffect of clouds on direct aerosol radiative forcing of climate
The effect of a cloud layer on top-of-atmosphere (TOA) aerosol radiative forcing is examined by means of a one-dimensional vertical column simulation. To span the range between nonabsorbing and strongly absorbing particles, (NH4)2SO4 and soot aerosols are considered individually and in internal and external mixtures. For a cloud layer embedded within an aerosol layer it is shown that direct aer...
متن کاملWill black carbon mitigation dampen aerosol indirect forcing?
[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...
متن کاملEvaluating Aerosol Indirect Effect Through Marine Stratocumulus Clouds
During the last decade much attention has been focused on anthropogenic aerosols and their radiative influence on the global climate. Charlson et al. (1992) and Penner et al. (1994) have demonstrated that tropospheric aerosols and particularly anthropogenic sulfate aerosols may significantly contribute to the radiative forcing exerting a cooling influence on climate which is comparable in magni...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Climate
سال: 2000
ISSN: 0894-8755,1520-0442
DOI: 10.1175/1520-0442(2000)013<4042:iafbha>2.0.co;2