Western Pacific Oscillation (WPO)

Description:
Pattern of variability over the NH Western Pacific Ocean.
Image:

Positive Phase:

Calculation Method:
The indices are based on centers-of-action of 500mb height patterns. These time series utilize the NCEP/NCAR R1 dataset. The region 50-70N; 140E-150W is subtracted from 25-40N; 140E-150W.
Time Interval: Daily
Time Coverage: 1948-nar present
Update Status: irregular
Get Data:
WPO Timeseries
Source:
Data is from NOAA/ESRL PSL
References/Info:
Daily Timeseries.
Monthly WPO (different source)
NOAA/CPC's WPO Information