It’s a case of déjà vu all over again across the continental U.S.: While the eastern part of the country braces for a deep chill, the West is baking in record-breaking heat. That pattern was the dominant one over the last couple winters and exacerbated California’s tenacious drought. A strong El Niño finally disrupted that pattern this winter, helping to fuel storms that have brought much needed rain and snow to the parched state.
Jul 5, 2016 | Weather Underground
Persistent cold air outbreaks in a warmer world
Apr 12, 2016 | Scientific American Blog Network
What Is This Polar Vortex That Is Freezing the U.S.?
| Nature Communications
Paired oxygen isotope records reveal modern North American atmospheric dynamics during the Holocene
Feb 17, 2016 | CNN
Record-breaking cold sweeps Eastern US