Energetics of interannual temperature variability

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dc.contributor University of Helsinki, Institute for Atmospheric and Earth System Research (INAR) en
dc.contributor.author Räisänen, Jouni
dc.date.accessioned 2019-06-28T13:56:02Z
dc.date.available 2019-06-28T13:56:02Z
dc.date.issued 2019-03
dc.identifier.citation Räisänen , J 2019 , ' Energetics of interannual temperature variability ' , Climate dynamics : observational, theoretical and computational research on the climate system , vol. 52 , no. 5-6 , pp. 3139-3156 . https://doi.org/10.1007/s00382-018-4306-0 en
dc.identifier.issn 0930-7575
dc.identifier.other PURE: 124876410
dc.identifier.other PURE UUID: 6d8e4814-154a-4482-9d28-d429f0f5d092
dc.identifier.other WOS: 000463842700035
dc.identifier.other ORCID: /0000-0003-3657-1588/work/59201754
dc.identifier.uri http://hdl.handle.net/10138/303626
dc.description.abstract Energetics of interannual temperature variability in the years 1980-2016 is studied using two reanalysis data sets. Monthly temperature anomalies are decomposed to contributions from the net surface energy flux, atmospheric energy convergence minus storage (CONV), and processes that affect the top-of-the-atmosphere radiation balance. The analysis reveals a strong compensation between the net surface heat flux and CONV over the ice-free oceans, with the former driving the temperature variability over the tropical oceans and the latter at higher latitudes. CONV also makes a dominant contribution to temperature anomalies in the winter hemisphere extratopical continents. During the summer half-year and in the tropics, however, variations in cloudiness dominate the temperature variability over land, while the contribution of CONV is modest or even negative. The latter reflects the diffusion-like behaviour of short-term atmospheric variability, which acts to spread out the local, to a large extent cloud-induced temperature anomalies to larger areas. The ERA-Interim and MERRA2 reanalyses largely agree on the general energy budget features of interannual temperature variability, although substantial quantitative differences occur in some of the individual terms. en
dc.format.extent 18
dc.language.iso eng
dc.relation.ispartof Climate dynamics : observational, theoretical and computational research on the climate system
dc.rights en
dc.subject Temperature variability en
dc.subject Energy budget en
dc.subject Reanalysis en
dc.subject ERA-Interim en
dc.subject MERRA2 en
dc.subject 114 Physical sciences en
dc.title Energetics of interannual temperature variability en
dc.type Article
dc.description.version Peer reviewed
dc.identifier.doi https://doi.org/10.1007/s00382-018-4306-0
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/acceptedVersion

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