"Unlike the Dirty Thirties drought, which lasted seven years, the decade-long drought in the 1950s or even the “megadroughts” of the 13th and 16th centuries — all of them La Niña phenomena — this one is triggered by man-made gases.
"“As long as the carbon dioxide in the atmosphere stays where it is, we have a new equilibrium,” said Seager [Dr. Richard Seager of the Earth Institute at Columbia University].
"Even if all CO² emissions dropped to zero overnight “significant drying would still occur.”"
Full article: Southwestern U.S. headed for a ‘perpetual drought’.
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