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dc.contributor.authorTartaglione, Nazario
dc.contributor.authorToniazzo, Thomas
dc.contributor.authorOrsolini, Yvan
dc.contributor.authorOtterå, Odd Helge
dc.date.accessioned2020-04-30T13:39:57Z
dc.date.available2020-04-30T13:39:57Z
dc.date.created2020-04-28T14:10:15Z
dc.date.issued2020
dc.identifier.citationAnnales Geophysicae. 2020, 38 545-555.
dc.identifier.issn0992-7689
dc.identifier.urihttps://hdl.handle.net/11250/2653093
dc.description.abstractWe employ JRA-55 (Japanese 55-year Reanalysis), a recent second-generation global reanalysis providing data of high quality in the stratosphere, to examine whether a distinguishable effect of geomagnetic activity on Northern Hemisphere stratospheric temperatures can be detected. We focus on how the statistical significance of stratospheric temperature differences may be robustly assessed during years with high and low geomagnetic activity. Two problems must be overcome. The first is the temporal autocorrelation of the data, which is addressed with a correction of the t statistics by means of the estimate of the number of independent values in the series of correlated values. The second is the problem of multiplicity due to strong spatial autocorrelations, which is addressed by means of a false discovery rate (FDR) procedure. We find that the statistical tests fail to formally reject the null hypothesis, i.e. no significant response to geomagnetic activity can be found in the seasonal-mean Northern Hemisphere stratospheric temperature record.
dc.language.isoeng
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleA note on the statistical evidence for an influence of geomagnetic activity on Northern Hemisphere seasonal-mean stratospheric temperatures using the Japanese 55-year Reanalysis
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holder© 2020, Authors
dc.description.versionpublishedVersion
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1
dc.identifier.doi10.5194/angeo-38-545-2020
dc.identifier.cristin1808470
dc.source.journalAnnales Geophysicae
dc.source.volume38
dc.source.pagenumber545-555
dc.relation.projectNorges forskningsråd: 255276


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