Rap, A, Scott, CE, Spracklen, DV et al. (5 more authors) (2013) Natural aerosol direct and indirect radiative effects. Geophysical Research Letters, 40 (12). 3297 - 3301. ISSN 0094-8276
Abstract
Natural aerosol plays a significant role in the Earth's system due to its ability to alter the radiative balance of the Earth. Here we use a global aerosol microphysics model together with a radiative transfer model to estimate radiative effects for five natural aerosol sources in the present-day atmosphere: dimethyl sulfide (DMS), sea-salt, volcanoes, monoterpenes, and wildfires. We calculate large annual global mean aerosol direct and cloud albedo effects especially for DMS-derived sulfate (-0.23 Wm and -0.76 Wm, respectively), volcanic sulfate (-0.21 Wm and -0.61 Wm) and sea-salt (-0.44 Wm and -0.04 Wm ). The cloud albedo effect responds nonlinearly to changes in emission source strengths. The natural sources have both markedly different radiative efficiencies and indirect/direct radiative effect ratios. Aerosol sources that contribute a large number of small particles (DMS-derived and volcanic sulfate) are highly effective at influencing cloud albedo per unit of aerosol mass burden. Key Points New, consistent estimates of natural aerosol radiative effects are given We find substantial variability in natural aerosol radiative efficiency Non-linear sensitivity of cloud albedo effects to emission source strength.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | Copyright (2013) American Geophysical Union. Rap, A, Scott, CE, Spracklen, DV, Forster, PM, Carslaw, KS, Schmidt, A, Mann, G and Bellouin, N ,Natural aerosol direct and indirect radiative effects, Geophysical Research Letters, 40 (12). To view the published open abstract, go to http://dx.doi.org10.1002/grl.50441/ |
Keywords: | radiative effect; natural aerosol |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 15 Nov 2013 13:08 |
Last Modified: | 11 Jun 2014 19:36 |
Published Version: | http://dx.doi.org/10.1002/grl.50441 |
Status: | Published |
Publisher: | American Geophysical Union |
Identification Number: | 10.1002/grl.50441 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:76978 |