The North American winter ‘dipole’ and extremes activity: A CMIP5 assessment

Shih Yu Simon Wang*, Wan Ru Huang, Jin Ho Yoon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


The 2013–2014 winter in North America brought intense drought in theWest and severe cold in the East. The circulation anomalies were characterized as a dipole: an amplified upper-level ridge over the West Coast and a deepened trough over the central-eastern United States. A previous study using a single model has linked the dipole to the ElNiño precursor and found that this link has strengthened in recent years. Here, 17 models from the Coupled Model Intercomparison Project Phase 5 are used to examine the dipole activity. Most models capture the dipole and its association with El Niño precursor and project this association to strengthen.

Original languageEnglish
Pages (from-to)338-345
Number of pages8
JournalAtmospheric Science Letters
Issue number3
Publication statusPublished - 2015 Jul


  • California drought
  • Dipole
  • ENSO precursor
  • West Pacific warming

ASJC Scopus subject areas

  • Atmospheric Science


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