Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results
[1] Marine cloud brightening through sea spray injection has been proposed as a method of temporarily alleviating some of the impacts of anthropogenic climate change, as part of a set of technologies called geoengineering. We outline here a proposal for three coordinated climate modeling experiments...
Published in: | Journal of Geophysical Research: Atmospheres |
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Online Access: | http://hdl.handle.net/10852/59817 http://urn.nb.no/URN:NBN:no-62502 https://doi.org/10.1002/jgrd.50856 |
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ftoslouniv:oai:www.duo.uio.no:10852/59817 2023-05-15T13:11:36+02:00 Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results Kravitz, Ben Forster, Piers M. Jones, Andy Robock, Alan Alterskjaer, Kari Boucher, Olivier Jenkins, Annabel K. L. Korhonen, Hannele Kristjansson, Jon Egill Muri, Helene Niemeier, Ulrike Partanen, Antti-Ilari Rasch, Philip J. Wang, Hailong Watanabe, Shingo 2015-09-20T18:49:53Z http://hdl.handle.net/10852/59817 http://urn.nb.no/URN:NBN:no-62502 https://doi.org/10.1002/jgrd.50856 EN eng American Geophysical Union (AGU) NFR/207711 EU/306395 http://urn.nb.no/URN:NBN:no-62502 Kravitz, Ben Forster, Piers M. Jones, Andy Robock, Alan Alterskjaer, Kari Boucher, Olivier Jenkins, Annabel K. L. Korhonen, Hannele Kristjansson, Jon Egill Muri, Helene Niemeier, Ulrike Partanen, Antti-Ilari Rasch, Philip J. Wang, Hailong Watanabe, Shingo . Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results. Journal of Geophysical Research - Atmospheres. 2013, 118, 11,175-11,186 http://hdl.handle.net/10852/59817 1265802 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research - Atmospheres&rft.volume=118&rft.spage=11,175&rft.date=2013 Journal of Geophysical Research - Atmospheres 118 11,175 11,186 http://dx.doi.org/10.1002/jgrd.50856 URN:NBN:no-62502 Fulltext https://www.duo.uio.no/bitstream/handle/10852/59817/1/Kravitz_Muri_etal_2013_jgrd50856.pdf 2169-897X Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2015 ftoslouniv https://doi.org/10.1002/jgrd.50856 2020-06-21T08:51:32Z [1] Marine cloud brightening through sea spray injection has been proposed as a method of temporarily alleviating some of the impacts of anthropogenic climate change, as part of a set of technologies called geoengineering. We outline here a proposal for three coordinated climate modeling experiments to test aspects of sea spray geoengineering, to be conducted under the auspices of the Geoengineering Model Intercomparison Project (GeoMIP). The first, highly idealized, experiment (G1ocean-albedo) involves a uniform increase in ocean albedo to offset an instantaneous quadrupling of CO2 concentrations from preindustrial levels. Results from a single climate model show an increased land-sea temperature contrast, Arctic warming, and large shifts in annual mean precipitation patterns. The second experiment (G4cdnc) involves increasing cloud droplet number concentration in all low-level marine clouds to offset some of the radiative forcing of an RCP4.5 scenario. This experiment will test the robustness of models in simulating geographically heterogeneous radiative flux changes and their effects on climate. The third experiment (G4sea-salt) involves injection of sea spray aerosols into the marine boundary layer between 30°S and 30°N to offset 2 W m−2 of the effective radiative forcing of an RCP4.5 scenario. A single model study shows that the induced effective radiative forcing is largely confined to the latitudes in which injection occurs. In this single model simulation, the forcing due to aerosol-radiation interactions is stronger than the forcing due to aerosol-cloud interactions. Article in Journal/Newspaper albedo Arctic Climate change Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Arctic Journal of Geophysical Research: Atmospheres 118 19 11,175 11,186 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
[1] Marine cloud brightening through sea spray injection has been proposed as a method of temporarily alleviating some of the impacts of anthropogenic climate change, as part of a set of technologies called geoengineering. We outline here a proposal for three coordinated climate modeling experiments to test aspects of sea spray geoengineering, to be conducted under the auspices of the Geoengineering Model Intercomparison Project (GeoMIP). The first, highly idealized, experiment (G1ocean-albedo) involves a uniform increase in ocean albedo to offset an instantaneous quadrupling of CO2 concentrations from preindustrial levels. Results from a single climate model show an increased land-sea temperature contrast, Arctic warming, and large shifts in annual mean precipitation patterns. The second experiment (G4cdnc) involves increasing cloud droplet number concentration in all low-level marine clouds to offset some of the radiative forcing of an RCP4.5 scenario. This experiment will test the robustness of models in simulating geographically heterogeneous radiative flux changes and their effects on climate. The third experiment (G4sea-salt) involves injection of sea spray aerosols into the marine boundary layer between 30°S and 30°N to offset 2 W m−2 of the effective radiative forcing of an RCP4.5 scenario. A single model study shows that the induced effective radiative forcing is largely confined to the latitudes in which injection occurs. In this single model simulation, the forcing due to aerosol-radiation interactions is stronger than the forcing due to aerosol-cloud interactions. |
format |
Article in Journal/Newspaper |
author |
Kravitz, Ben Forster, Piers M. Jones, Andy Robock, Alan Alterskjaer, Kari Boucher, Olivier Jenkins, Annabel K. L. Korhonen, Hannele Kristjansson, Jon Egill Muri, Helene Niemeier, Ulrike Partanen, Antti-Ilari Rasch, Philip J. Wang, Hailong Watanabe, Shingo |
spellingShingle |
Kravitz, Ben Forster, Piers M. Jones, Andy Robock, Alan Alterskjaer, Kari Boucher, Olivier Jenkins, Annabel K. L. Korhonen, Hannele Kristjansson, Jon Egill Muri, Helene Niemeier, Ulrike Partanen, Antti-Ilari Rasch, Philip J. Wang, Hailong Watanabe, Shingo Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results |
author_facet |
Kravitz, Ben Forster, Piers M. Jones, Andy Robock, Alan Alterskjaer, Kari Boucher, Olivier Jenkins, Annabel K. L. Korhonen, Hannele Kristjansson, Jon Egill Muri, Helene Niemeier, Ulrike Partanen, Antti-Ilari Rasch, Philip J. Wang, Hailong Watanabe, Shingo |
author_sort |
Kravitz, Ben |
title |
Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results |
title_short |
Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results |
title_full |
Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results |
title_fullStr |
Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results |
title_full_unstemmed |
Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results |
title_sort |
sea spray geoengineering experiments in the geoengineering model intercomparison project (geomip): experimental design and preliminary results |
publisher |
American Geophysical Union (AGU) |
publishDate |
2015 |
url |
http://hdl.handle.net/10852/59817 http://urn.nb.no/URN:NBN:no-62502 https://doi.org/10.1002/jgrd.50856 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic Climate change |
genre_facet |
albedo Arctic Climate change |
op_source |
2169-897X |
op_relation |
NFR/207711 EU/306395 http://urn.nb.no/URN:NBN:no-62502 Kravitz, Ben Forster, Piers M. Jones, Andy Robock, Alan Alterskjaer, Kari Boucher, Olivier Jenkins, Annabel K. L. Korhonen, Hannele Kristjansson, Jon Egill Muri, Helene Niemeier, Ulrike Partanen, Antti-Ilari Rasch, Philip J. Wang, Hailong Watanabe, Shingo . Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results. Journal of Geophysical Research - Atmospheres. 2013, 118, 11,175-11,186 http://hdl.handle.net/10852/59817 1265802 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research - Atmospheres&rft.volume=118&rft.spage=11,175&rft.date=2013 Journal of Geophysical Research - Atmospheres 118 11,175 11,186 http://dx.doi.org/10.1002/jgrd.50856 URN:NBN:no-62502 Fulltext https://www.duo.uio.no/bitstream/handle/10852/59817/1/Kravitz_Muri_etal_2013_jgrd50856.pdf |
op_doi |
https://doi.org/10.1002/jgrd.50856 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
118 |
container_issue |
19 |
container_start_page |
11,175 |
op_container_end_page |
11,186 |
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