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Monthly North Tropical Atlantic (NTA) SST Index

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Abstract: [Source: NOAA Earth System Research Laboratory, Physical Sciences Division, ]

The timeseries of SST anomalies averaged over 60W to 20W, 6N to 18N and 20W to 10W, 6N to 10N. Data is obtained from the COADS dataset for 1951-2000. Anomalies were calculated relative to the 1951-2000 climatology, smoothed by three months running mean procedure and projected onto 20 leading EOFs. Month of data is the center of the 3 months that are smoothed.

Related URL
Description: Access to monthly NTA index data since 1951
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Geographic Coverage
Spatial coordinates   
  N: 10.0   S: 6.0   E: -10.0   W: -20.0
  N: 18.0   S: 6.0   E: -20.0   W: -60.0

Data Set Citation
Dataset Originator/Creator: NOAA/PSD
Dataset Title: North Tropical Atlantic (NTA) SST Index
Dataset Series Name: NOAA/PSD Indices and Forecasts
Dataset Release Date: ongoing
Dataset Release Place: Boulder, CO, USA
Dataset Publisher: NOAA/ESRL/PSD
Online Resource:
Temporal Coverage
Start Date: 1951-01-01
Data Resolution
Temporal Resolution: monthly
Temporal Resolution Range: Monthly - < Annual
Data Set Progress
Originating Center
Data Center
Physical Sciences Division, Earth System Research Laboratory, OAR, NOAA, U.S. Department of Commerce Supplemental Info
Data Center URL:
Dataset ID: NTA Index

Data Center Personnel
Email: at
Distribution Media: online www
Distribution Format: ascii
Fees: none
Penland, C., and Ludmila Matrosova, 1997: On the prediction of
tropical Atlantic sea surface temperatures. Proc. 21st Climate
Diagnostics Workshop, Huntsville AL, 28 Oct. - 1 Nov., 1996.

Penland, C., and L. Matrosova, 1998: "Prediction of tropical Atlantic
sea surface temperatures using Linear Inverse Modeling," J. Climate,
March, 483-496 pp.

Penland, C., and L. Matrosova, 2001: "Expected and Actual Errors of
Linear Inverse Modeling Forecasts," Monthly Weather Review, 129,
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2005-12-15
Last DIF Revision Date: 2018-02-05