A second severe drought follows within five years

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An El Nino early in the year and record tropical North Atlantic warmth later in it combine to produce a drought more extensive than 2005. The Rio Negro at Manaus reaches a record low in October. The recurrence interval, not the severity, is what changes the scientific conversation - a once-in-a-century event that repeats in five years was not correctly characterised.

A node is not a place. Drawing it on a map would assert something about the world that no stored fact supports.