Jenkins, AKL and Forster, PM (2013) The inclusion of water with the injected aerosol reduces the simulated effectiveness of marine cloud brightening. Atmospheric Science Letters, 14 (3). 164 - 169. ISSN 1530-261X
Abstract
Sea-salt aerosols proposed for injection in marine cloud brightening geoengineering would likely result from evaporation of sea-water droplets. Previous simulations have omitted this mechanism. Using the WRF/Chem model (Weather Research and Forecasting model coupled with Chemistry) in large-eddy simulation mode, we find that droplet evaporation creates cold pools, suppressing initial aerosol plume heights by up to 30% (40 m). This lessens cloud albedo increases from 94.1 to 88.5% in our weakly-precipitating case and from 4.3 to 1.4% for daytime injection into our nonprecipitating case (cloud albedo differences of 0.012 and 0.009, respectively). Inclusion of this effect in future modelling would allow increasingly realistic effectiveness estimates.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014, Royal Meteorological Society. This is an author produced version of a paper published in Atmospheric Science Letters. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Marine cloud brightening; cloud seeding; WRF/Chem; marine stratocumulus; large-eddy simulation; cold pools; geoengineering |
Dates: |
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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: | 10 Dec 2014 11:30 |
Last Modified: | 10 Dec 2014 11:30 |
Published Version: | http://dx.doi.org/10.1002/asl2.434 |
Status: | Published |
Publisher: | Royal Meteorological Society |
Refereed: | Yes |
Identification Number: | 10.1002/asl2.434 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:81718 |