Atlantic Meridional Mode SST Index (AMM) Monthly Time-series

Describes meridional variability in the tropical Atlantic Ocean.

From Chiang and Vimont (2004):

Spatial properties of the leading MCA mode 1 in the Atlantic. (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.

Times-series from the WRIT Time-series Plotting Tool (center this)

Description and Specifications

Description

The mode describes the meridional variability in the tropical Atlantic 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

Get Data

Time-series List

AMM SST : Standard PSL Format, CSV, and NetCDF (What is standard format?)
AMM Wind : Standard PSL Format, CSV, and NetCDF (What is standard format?)

Source, citation and related Information.

Related Time-series

Original Source

Index is calculated at the U Wisconsin by Prof Dan Vimont.

Time-series source dataset(s)

Input data for the mode calculation is the NCEP/NCAR Reanalysis.

Citation

Chiang, J. C. H. and D. J. Vimont, 2004: Analagous meridional modes of atmosphere-ocean variability in the tropical Pacific and tropical Atlantic. J. Climate, 17 (21), 4143–4158.

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.