El-Niņo SST Anomalies
When we plot the anomalies and create an SST map during an El-Niņo month we see a big difference in the equatorial Pacific ocean conditions. The isotherms indicate that there are temperature anomalies ranging from -0.5°C in the upper left corner to +4.5°C in the right center. Only by mapping SST anomalies in this way can we visualize the occurrence of an El-Niņo event.