Sea Surface Temperature Anomalies (SSTA) in the eastern Pacific on May 7, 2012.
Figure 1 shows SSTA, using the State of the Ocean (SOTO) tool at the PO.DAAC, in the Pacific for May 7, 2012. Anomalies are based on the difference between the operational sea surface temperature and sea ice analysis (OSTIA) (Donlon et al., 2011) and Pathfinder v5 climatology (Casey and Cornillon, 1999). Warm anomalies over 2°C are visible off the Peruvian coast.
SSTA for the week of January 8, 2012.
SSTA for the week of March 11, 2012.
Figure 2 illustrates NOAA optimum interpolation sea surface temperature analysis (OIv2) (Reynolds and Smith, 1994) that shows conditions off Peru have shifted from neutral/negative anomalies to positive anomalies since January 2012. By March 2012 (Figure 3) warm anomalies over 1°C had appeared off the Peruvian coast. Figures 2 and 3 were taken directly from: http://www.emc.ncep.noaa.gov/research/cmb/sst_analysis/images/archive/weekly_anomaly/.
PO.DAAC Science Team