Tag Archives: Thermohaline circulation

"Explaining" a Positive NAO

Trouet et 2009 posit a positive NAO as the “explanation” of the Medieval Climate Anomaly, pausing only briefly to ask what might have caused a centuries long (“temporally pervasive”) positive NAO, falling back on an arm-waving attribution to a stronger Atlantic meridional overturning circulation: The persistently strong winter MCA NAO and its weakening during the […]

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