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
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: | https://doi.org/10.1002/asl2.434 |
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