Beda SSTA dengan SST

The sea surface temperature anomaly (SSTA/deviation from normal) is the difference between the observed SST and the climatological SST. These anomalies are calculated on a weekly basis.

Positive SSTAs are usually correlated with increased regions of convection (cloudiness and rainfall) while negative SSTAs are usually correlated to reduced convection.

SSTAs can be used as an indicator of the phase of global climate fluctuations, such as the El Nino/Southern Oscillation (ENSO).

Sea Surface Temperature anomalies in degrees Celsius, or "SST anomalies" for short, are how much temperatures depart from what is normal for that time of year. This makes sense; we might say that we had a "warm winter" even though it was still much colder than summer. What we mean is that it was warmer than a normal winter; in our parlance, we would say that it was a "positive anomaly". An unusually cold winter would be a "negative anomaly". For Pacific SST, an anomaly in the range of 1.5 to 3.5 degrees Celsius would be considered characteristic of an El Niño; the warmer and more widespread the water, the stronger the El Niño. (http://meteora.ucsd.edu/~pierce/elnino/sstanoms.html)

The data displayed in this map is the weekly average, centred on the date shown.

source; from (http://noconsensus. wordpress.com/2010/01/14/sst-anomaly-video/)

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