{"refrec":{"BRefID":314343,"RR":"<b>Chu, J.-E.; Timmermann, A.; Lee, J.-Y.</b> (2019). North American April tornado occurrences linked to global sea surface temperature anomalies. <i>Science Advances 5(8)</i>: eaaw9950. <a href=\"https://dx.doi.org/10.1126/sciadv.aaw9950\" target=\"_blank\">https://dx.doi.org/10.1126/sciadv.aaw9950</a>","BEntID":307080,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Science Advances 5(8)</i>: eaaw9950. <a href=\"https://dx.doi.org/10.1126/sciadv.aaw9950\" target=\"_blank\">https://dx.doi.org/10.1126/sciadv.aaw9950</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Chu, J.-E.; Timmermann, A.; Lee, J.-Y.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Chu, J.-E. <i>et al.</i>","Englishabstract":"Annual tornado occurrences over North America display large interannual variability and a statistical linkage to sea surface temperature (SST) anomalies. However, the underlying physical mechanisms for this connection and its modulation in a rapidly varying seasonal environment still remain elusive. Using tornado data over the United States from 1954 to 2016 in combination with SST-forced atmospheric general circulation models, we show a robust dynamical linkage between global SST conditions in April, the emergence of the Pacific-North American teleconnection pattern (PNA), and the year-to-year tornado activity in the Southern Great Plains (SGP) region of the United States. Contrasting previous studies, we find that only in April SST-driven atmospheric circulation anomalies can effectively control the northward moisture-laden flow from the Gulf of Mexico, boosting low-level moisture flux convergence over the SGP. These strong large-scale connections are absent in other months because of the strong seasonality of the PNA and background moisture conditions.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"North American April tornado occurrences linked to global sea surface temperature anomalies","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2019,"MonPub":null,"DateUpdate":"2019-08-29","DateCreate":"2019-08-29","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000482759500017","VABBcode":null,"OpenAcc":1,"DOI":"10.1126/sciadv.aaw9950"},"refs":null,"anarec":{"AnaID":314343,"PubliDate":2019,"Pagination":"eaaw9950","XtraPublOfAnaID":null,"ISBN":null,"Volume":"5","Issue":"8","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":248966,"SerRR":"Science Advances. 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