Sökning: WFRF:(Niemeier W.) > Response to marine ...
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000 | 03547naa a2200493 4500 | |
001 | oai:DiVA.org:su-152720 | |
003 | SwePub | |
008 | 180226s2018 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1527202 URI |
024 | 7 | a https://doi.org/10.5194/acp-18-621-20182 DOI |
040 | a (SwePub)su | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Stjern, Camilla W.4 aut |
245 | 1 0 | a Response to marine cloud brightening in a multi-model ensemble |
264 | c 2018-01-19 | |
264 | 1 | b Copernicus GmbH,c 2018 |
338 | a print2 rdacarrier | |
520 | a Here we show results from Earth system model simulations from the marine cloud brightening experiment G4cdnc of the Geoengineering Model Intercomparison Project (GeoMIP). The nine contributing models prescribe a 50% increase in the cloud droplet number concentration (CDNC) of low clouds over the global oceans in an experiment dubbed G4cdnc, with the purpose of counteracting the radiative forcing due to anthropogenic greenhouse gases under the RCP4.5 scenario. The model ensemble median effective radiative forcing (ERF) amounts to -1.9W m(-2), with a substantial inter-model spread of -0.6 to -2.5W m(-2). The large spread is partly related to the considerable differences in clouds and their representation between the models, with an underestimation of low clouds in several of the models. All models predict a statistically significant temperature decrease with a median of (for years 2020-2069) 0.96 [-0.17 to -1.21] K relative to the RCP4.5 scenario, with particularly strong cooling over low-latitude continents. Globally aver-aged there is a weak but significant precipitation decrease of -2.35 [-0.57 to -2.96]% due to a colder climate, but at low latitudes there is a 1.19% increase over land. This increase is part of a circulation change where a strong negative top-of-atmosphere (TOA) shortwave forcing over subtropical oceans, caused by increased albedo associated with the increasing CDNC, is compensated for by rising motion and positive TOA longwave signals over adjacent land regions. | |
650 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskapx Meteorologi och atmosfärforskning0 (SwePub)105082 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Meteorology and Atmospheric Sciences0 (SwePub)105082 hsv//eng |
700 | 1 | a Muri, Helene4 aut |
700 | 1 | a Ahlm, Larsu Stockholms universitet,Meteorologiska institutionen (MISU),University of Oslo, Norway4 aut |
700 | 1 | a Boucher, Olivier4 aut |
700 | 1 | a Cole, Jason N. S.4 aut |
700 | 1 | a Ji, Duoying4 aut |
700 | 1 | a Jones, Andy4 aut |
700 | 1 | a Haywood, Jim4 aut |
700 | 1 | a Kravitz, Ben4 aut |
700 | 1 | a Lenton, Andrew4 aut |
700 | 1 | a Moore, John C.4 aut |
700 | 1 | a Niemeier, Ulrike4 aut |
700 | 1 | a Phipps, Steven J.4 aut |
700 | 1 | a Schmidt, Hauke4 aut |
700 | 1 | a Watanabe, Shingo4 aut |
700 | 1 | a Kristjánsson, Jon Egill4 aut |
710 | 2 | a Stockholms universitetb Meteorologiska institutionen (MISU)4 org |
773 | 0 | t Atmospheric Chemistry And Physicsd : Copernicus GmbHg 18:2, s. 621-634q 18:2<621-634x 1680-7316x 1680-7324 |
856 | 4 | u https://doi.org/10.5194/acp-18-621-2018y Fulltext |
856 | 4 | u https://www.atmos-chem-phys.net/18/621/2018/acp-18-621-2018.pdf |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-152720 |
856 | 4 8 | u https://doi.org/10.5194/acp-18-621-2018 |
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