Pacific North American Index (PNA) from the NOAA/CPC
This mode describes low frequency variability of the Northern Hemisphere extratropics.
- >This mode describes low frequency variability of the Northern Hemisphere extratropics. A positive PNA is associated with in ceased heights over the inter-mountain region of the US and low heights in the SE and off the Aleutian islands. A positive PNA is often associated with an El Ni˜o and a negative one with a La Ni˜a.
Temporal Coverage
- Monthly values: 1950 to present
- Update Status: Static
Data Notes
- Units: mb
- Missing data value: -99.0
Time-series List
- PNA (from NOAA/CPC): Standard PSL Format, CSV, NetCDF (What is standard format?)
Usage Restrictions
- None
Caveats
- None
Related Time-series
Links
Analysis pages
Original Source
- Data is from the NOAA CPC
Time-series source dataset(s)
- NCEP/NCAR Reanalysis