Ocean currents are a major factor in the variations of temperatures across the world, due to the process of horizontal transfer of heat energy. Warm currents carry water pole wards and raise the temperature of the maritime environments where they flow. Cold currents carry water towards the equator and so lower the temperatures of coastal areas. The mean difference of one place and the mean same monthly totals of places with the same latitude; this difference is known as Temperature anomaly.
(The term 'temperature anomaly' is used specifically to describe temperature differences from a mean.) Anomalies result ...