Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitlePhase speed spectra and the recent poleward shift of Southern Hemisphere surface westerlies.AuthorsChen, Gang; Held, Isaac M.PublicationGeophysical Research Letters, 2007, Vol 34, Issue 21, pn/aISSN0094-8276Publication typeArticleDOI10.1029/2007GL031200