EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SEA SURFACE TEMPERATURE INDICES > NORTH TROPICAL ATLANTIC INDEX
The timeseries of SST anomalies averaged over 60W to 20W, 6N to 18N and 20W to 10W, 6N to 10N map. Data is obtained from the COADS dataset for 1951-1991 and NCEP afterwards. 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. More information and the indexes forecasted values are available.
Earth Systems Research Laboratory, Physical Sciences Division, NOAA, http://www.esrl.noaa.gov/psd/data/climateindices/list/#NTA
Penland, C., and L. Matrosova, 1998: "Prediction of tropical Atlantic sea aurface temperatures using Linear Inverse Modeling," J. Climate, March, 483-496 pp.