More-persistent weak stratospheric polar vortex States linked to cold extremes

Marlene Kretschmer*, Dim Coumou, Laurie Agel, Mathew BArlow, Eli Tziperman, Ju DAh Cohen

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review


Over recent decades, the stratospheric polar vortex has shifted toward more frequent weak States, which can explain Eurasian cooling trends in boreal winter in the era of Arctic amplification.

Original languageEnglish
Pages (from-to)49-60
Number of pages12
JournalBulletin of the American Meteorological Society
Issue number1
Publication statusPublished - 1 Jan 2018


ACKNOWLEDGMENTS. We thank Peter Hitchcock and two anonymous reviewers for their useful comments and suggestions to improve the manuscript, and we thank ECMWF and GMAO for making the ERA-Interim and the MERRA-2 data available. The work was supported by the German Federal Ministry of Education and Research, Grant 01LN1304A (M.K., D.C.); National Science Foundation (NSF) Grants AGS-1303647 and PLR-1504361 (J.C.); NOAA Grant NA15OAR4310077 (J.C.); and NSF Grant AGS-1303604 (E.T.). The research project resulted from M.K. visiting J.C., and M.K. would like to thank AER and Harvard for hosting. E.T. would like to thank the Weizmann Institute for its hospitality during parts of this work.

FundersFunder number
National Science Foundation1504361, PLR-1504361, AGS-1303647
National Oceanic and Atmospheric AdministrationNA15OAR4310077, AGS-1303604
Bundesministerium für Bildung und Forschung01LN1304A
Norsk Sykepleierforbund


    Dive into the research topics of 'More-persistent weak stratospheric polar vortex States linked to cold extremes'. Together they form a unique fingerprint.

    Cite this