2: Blowing hot & cold
The chart shows climate anomalies over the oceans that are associated with a typical warm ENSO event. Sea-surface temperature (top); surface wind stress (middle); and atmospheric sea-level pressure (bottom). The anomalies are measured with respect to the annual climatological cycle. (From Zhang et al.) The solid (dashed) lines are positive (negative) contours at linearly spaced intervals. The warming of the Pacific Ocean in the tropics is particularly obvious.