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  HOME > Climate & Weather Linkage > Teleconnections > Pacific/North American Pattern

Ensemble Mean PNA Outlook

  • Current Conditions

The daily PNA index corresponds to the PNA patterns, which vary from one month to the next. Click here for the methodology used to calculate the daily PNA index.

The daily PNA index for the past 120 days. Each daily value has been standardized by the standard deviation of the monthly PNA index from 1950 to 2000 interpolated to the day in question.

  • Monthly mean PNA index since January 1950
  • Animations (circulations)

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  • Outlooks

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  • Expert Discussions

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  • Publications

Barnston, A. G., and R. E. Livezey, 1987: Classification, seasonality and persistence of low-frequency atmospheric circulation patterns. Mon. Wea. Rev., 115, 1083-1126.

Chen, W. Y., and H. van den Dool, 2003: Sensitivity of Teleconnection Patterns to the Sign of Their Primary Action Center, Mon. Wea. Rev., 131, 2885-2899.

van den Dool, H. M., S. Saha, and Å. Johansson, 2000: Empirical Orthogonal Teleconnections. J. Climate, 13, 1421-1435.

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Page last modified: December 12, 2005
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