The anomalies show the deviation from the normal seasonal cycle of precipitation. These maps help interpret the accumulation maps by isolating attention on the changes. Most notably here, the 2015-2016 El Niño is one of the strongest on record. The changes in the atmospheric circulation shift the rainfall that typically falls in the western Pacific—over Southeast Asia and northern Australia—to the central or eastern Pacific. As well, there are dry conditions across the Caribbean, tropical Atlantic, and northern South America. This display reduces the welter of \"ordinary\" precipitation and focuses attention on the systematic changes that are persistent, but not necessarily large enough to be readily noticed in the accumulations.",
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