The impact of the Madden-Julian oscillation trend on the Antarctic warming during the 1979-2008 austral winter

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Abstract

Antarctica is one of the regions where the earth's surface is warming most rapidly. The interdecadal warming trend over much of Antarctica during the austral winter is about 1 °C decade -1, which is almost twice that of the global mean. There is increasing observational and modeling evidence that high-latitude warming is linked to localized heating in the tropics. Here we show that interdecadal changes in the spatial patterns of the extratropical response to various phases of the Madden-Julian oscillation (MJO) explain 10-20% of the interdecadal warming over Antarctica, possibly through the poleward propagation of tropically forced Rossby wave trains.

Original languageEnglish (US)
Pages (from-to)194-199
Number of pages6
JournalAtmospheric Science Letters
Volume13
Issue number3
DOIs
StatePublished - Jul 1 2012

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

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