This is DC: We Need to Know Where to Place Blame

In regard to the snowstorms that affected the D.C. metro region and other mid-Atlantic and northeast coastal regions, a new study by a team of scientists at Columbia University's Lamont-Doherty Earth Observatory argues that global warming was not involved.

Instead, the Washington Post reports,

the anomalous winter was primarily the result of convergence of an exceptionally strong El Nino and unusually strong negative phase of North Atlantic Oscillation (NAO).

Just so we're clear.