Influence of winter and summer surface wind anomalies on summer Arctic sea ice extent

• Ogi, Masayo

• Yamazaki, Koji

• Wallace, John M.

抄録

Based on a statistical analysis incorporating 925‐hPa wind fields from the NCEP/NCAR Reanalyses, it is shown that the combined effect of winter and summer wind forcing accounts for 50% of the variance of the change in September Arctic sea ice extent from one year to the next (ΔSIE) and it also explains roughly 1/3 of the downward linear trend of SIE over the past 31 years. In both seasons meridional wind anomalies to the north and east of Greenland are correlated with September SIE, presumably because they modulate the export of ice through Fram Strait. Anticyclonic wind anomalies over the Beaufort Sea during summer favor low September SIE and have contributed to the record-low values in recent summers, perhaps by enhancing the flux of ice toward Fram Strait in the trans-polar drift.

収録刊行物

• Geophysical Research Letters

  Geophysical Research Letters 37 L07701-, 2010-04-02

  American Geophysical Union

キーワード

• General Earth and Planetary Sciences
• Geophysics

詳細情報

• CRID: 1050845763939783808
• NII論文ID: 120005906562
• DOI: 10.1029/2009gl042356
• ISSN: 19448007
• ISSN: 00948276
• HANDLE: 2115/48180
• Web Site: https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2009GL042356
• Web Site: https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2009GL042356
• 本文言語コード: en
• 資料種別: journal article
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