Pacific Meridional Mode SST Index (PMM) Monthly Time-series
Describes meridional variability in the tropical Pacific Ocean.
Spatial properties of the leading MCA mode 1 in the Pacific. (top) Regression maps of the MCA leading
mode SST normalized expansion coefficients on SST and 10-m wind vectors. Wind vectors are plotted where the geometric sum of their
correlation coefficients exceeds 0.27 (the 95% confidence level). (bottom) Same as (a), (b) but for precipitation (mm day21). In general, shaded
regions in all panels exceed the 95% confidence level.
link to page that created plot with options selected (optional)
- The mode describes the meridional variability in the tropical Pacific Ocean. A similar mode but for the Atlantic is available.
Temporal Coverage
- Monthly values: 1948/01 to present
- Update Status: Monthly
Data Notes
- Units: degC
- Missing data value: -99.0
Time-series List
- PMM (SST): Standard PSL Format, CSV, Netcdf (What is standard format?)
- PMM (Wind): Standard PSL Format, CSV, Netcdf (What is standard format?)
Usage Restrictions
- None
Caveats
- None
Analysis pages
- WRIT correlation
- WRIT time-series
Original Source
- Data is caculated at the U Wisconsin by Prof Dan Vimont.
- Website
- Original FTP
Time-series source dataset(s)
- Input data for the mode calculation is the NCEP/NCAR Reanalysis.
References
- 2004 Chiang, J. C. H., and D. J. Vimont: Analogous meridional modes of atmosphere-ocean variability in the tropical Atlantic and tropical Pacific. J. Climate,17(21), 4143-4158.