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dc.contributor.authorLutsko, Nicholas J.
dc.contributor.authorCronin, Timothy Wallace
dc.date.accessioned2020-05-08T15:49:48Z
dc.date.available2020-05-08T15:49:48Z
dc.date.issued2018-11
dc.date.submitted2018-08
dc.identifier.issn1942-2466
dc.identifier.urihttps://hdl.handle.net/1721.1/125139
dc.description.abstractThe precipitation efficiency of convection (ε) plays an important role in simple models of the tropical atmosphere as well as in global climate models' projections of future climate changes, but remains poorly understood and poorly constrained. A particularly urgent question is how ε will change in warmer climates. To address these issues, this study investigates the precipitation efficiency in simulations of radiative-convective equilibrium with a cloud-resolving model forced by a wide range of sea surface temperatures (SSTs). Two different domains are considered: a small, doubly periodic domain, and a 2-D (x-z) “mock-Walker” domain with a sinusoidal SST profile that resembles the equatorial Pacific, and the sensitivities of the results to the microphysical scheme and to the horizontal resolution are also explored. It is found that ε generally increases with warming in the small domain simulations because of increases in the efficiency with which cloud condensate is converted into precipitation, with changes in the re-evaporation of falling precipitation playing a secondary role. This picture is complicated in the 2-D simulations by substantial changes in the degree of convective organization as the underlying SSTs are varied. ε is found to decrease as convection becomes more organized, because convective organization results in relatively more low clouds, which have small (≤0.1) precipitation efficiencies, and relatively less high clouds, which have larger (∼0.4) precipitation efficiencies.en_US
dc.description.sponsorshipNational Science Foundation (Grant AGS-1623218)en_US
dc.language.isoen
dc.publisherAmerican Geophysical Union (AGU)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1029/2018ms001482en_US
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs Licenseen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.sourceAmerican Geophysical Union (AGU)en_US
dc.titleIncrease in Precipitation Efficiency With Surface Warming in Radiative‐Convective Equilibriumen_US
dc.typeArticleen_US
dc.identifier.citationLutsko, Nicholas J. and Timothy W. Cronin. "Increase in Precipitation Efficiency With Surface Warming in Radiative‐Convective Equilibrium." Journal of Advances in Modelling Earth Systems 10, 11 (November 2018): 2992–3010 © 2018 The Authorsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.relation.journalJournal of Advances in Modelling Earth Systemsen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2020-04-15T17:25:11Z
dspace.date.submission2020-04-15T17:25:21Z
mit.journal.volume10en_US
mit.journal.issue11en_US
mit.licensePUBLISHER_CC


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