Teleconnection Indices: 500mb Heights
ESRL/PSD Ensemble, Daily Forecasts of Teleconnection Indices
These indices are for four patterns of low-frequency tropospheric height variability, as classified in the study of Barnston and Livezey (MWR, 1987). The indices are based on centers-of-action of 500mb height patterns as defined below. These forecasts utilize the mean of the 15 member ESRL/PSD ensemble forecasts run daily from 00Z initial conditions. The height fields are spectrally truncated to total wavenumber 10 in order to emphasize large_scale variations.
Last Update: Saturday, 02-May-2009 05:52:45 MDT- North Atlantic Oscillation(NAO) [(35-45N, 70W-10W) - (55-70N, 70W-10W)]
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NAO Composite Positive Phase Map - Western Pacific Oscillation(WPO) [(25-40N, 140E-150W) - (50-70N, 140E-150W)]
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WPO Composite Positive Phase Map
- Pacific North America Pattern (PNA) [(15-25N, 180-140W)-(40-50N, 180-140W)+(45-60N, 125W-105W)-(25-35N, 90W-70W)]
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PNA Composite Positive Phase Map
- Eastern Pacific Oscillation(EPO) [(20-35N, 160W-125W) - (55-65N, 160W-125W)]
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EPO Composite Positive Phase Map
NAO Composite Positive Phase Map
WPO Composite Positive Phase Map
PNA Composite Positive Phase Map
EPO Composite Positive Phase Map![North Atlantic Oscillation(NAO) [(35-45N, 70W-10W) - (55-70N, 70W-10W)]](https://webarchive.library.unt.edu/eot2008/20090506020638/http://www.cdc.noaa.gov/forecasts/teleconn/images/nao.png){kind=link}
![Western Pacific Oscillation(WPO) [(25-40N, 140E-150W) - (50-70N, 140E-150W)]](https://webarchive.library.unt.edu/eot2008/20090506020638/http://www.cdc.noaa.gov/forecasts/teleconn/images/wpo.png){kind=link}
![Pacific North America Pattern (PNA) [(15-25N, 180-140W)-(40-50N, 180-140W)+(45-60N, 125W-105W)-(25-35N, 90W-70W)]](https://webarchive.library.unt.edu/eot2008/20090506020638/http://www.cdc.noaa.gov/forecasts/teleconn/images/pna.png){kind=link}
![Eastern Pacific Oscillation(EPO) [(20-35N, 160W-125W) - (55-65N, 160W-125W)]](https://webarchive.library.unt.edu/eot2008/20090506020638/http://www.cdc.noaa.gov/forecasts/teleconn/images/epo.png){kind=link}
Compare Daily Forecasts of Teleconnection Indices between the NCEP and ESRL/PSD Ensembles
Daily forecasts of teleconnection indices produced at the Climate Prediction Center from the NCEP ensemble can be found here.
DISCLAIMER: We are not an operational center and are not staffed 24/7. We make every effort to provide the forecasts in a timely manner, but there is no guarantee that they will be updated everyday.