Daily to decadal modulation of jet variability

dc.contributor.author Woollings, Tim
dc.contributor.author Barnes, Elizabeth
dc.contributor.author Hoskins, Brian
dc.contributor.author Kwon, Young-Oh
dc.contributor.author Lee, Robert W.
dc.contributor.author Li, Camille
dc.contributor.author Madonna, Erica
dc.contributor.author McGraw, Marie
dc.contributor.author Parker, Tess
dc.contributor.author Rodrigues, Regina
dc.contributor.author Spensberger, Clemens
dc.contributor.author Williams, Keith
dc.date.accessioned 2018-03-12T16:27:07Z
dc.date.available 2018-07-29T08:49:51Z
dc.date.issued 2018-01-29
dc.description Author Posting. © American Meteorological Society, 2018. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Climate 30 (2018): 1297-1314, doi:10.1175/JCLI-D-17-0286.1. en_US
dc.description.abstract The variance of a jet’s position in latitude is found to be related to its average speed: when a jet becomes stronger, its variability in latitude decreases. This relationship is shown to hold for observed midlatitude jets around the world and also across a hierarchy of numerical models. North Atlantic jet variability is shown to be modulated on decadal time scales, with decades of a strong, steady jet being interspersed with decades of a weak, variable jet. These modulations are also related to variations in the basinwide occurrence of high-impact blocking events. A picture emerges of complex multidecadal jet variability in which recent decades do not appear unusual. An underlying barotropic mechanism is proposed to explain this behavior, related to the change in refractive properties of a jet as it strengthens, and the subsequent effect on the distribution of Rossby wave breaking. en_US
dc.description.embargo 2018-07-29 en_US
dc.description.sponsorship We would like to acknowledge funding from NERC and the Research Council of Norway project jetSTREAM under Grants NE/ L01047X/1 (IMPETUS) and 231716, respectively, for a contribution to the work presented here. EAB is supported in part by the NSF Climate and Large-Scale Dynamics Program under Grant 1545675. Y-OK was supported by the NSF Climate and Large-Scale Dynamics Program under Grant 1355339. KW was supported by the Joint UK BEIS/Defra Met Office Hadley Centre Climate Programme (GA01101). RL was supported by the Met Office and the National Centre for Atmospheric Science. en_US
dc.identifier.citation Journal of Climate 30 (2018): 1297-1314 en_US
dc.identifier.doi 10.1175/JCLI-D-17-0286.1
dc.identifier.uri https://hdl.handle.net/1912/9634
dc.language.iso en_US en_US
dc.publisher American Meteorological Society en_US
dc.relation.uri https://doi.org/10.1175/JCLI-D-17-0286.1
dc.subject Atmospheric circulation en_US
dc.subject Jets en_US
dc.subject North Atlantic Oscillation en_US
dc.subject Baroclinic models en_US
dc.subject Decadal variability en_US
dc.title Daily to decadal modulation of jet variability en_US
dc.type Article en_US
dspace.entity.type Publication
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