New research weighs in on a popular debate about whether reduced Arctic sea ice is causing extreme mid-latitude winters. Their result? Blame the atmosphere, not the ice.
Stand aside polar vortex! The PNA may be the most important atmospheric circulation pattern you've never heard of.
Wondering how strong any potential El Niño might be this winter? Maybe you should look to the South Pacific for clues.
How this winter's temperature swings may have been partially driven by the Madden Julian Oscillation or MJO.
In this installment of our Beyond the Data blog, Carl Schreck talks about how a tropical climate pattern called the MJO left its fingerprints all over California's soaking rains and Boston's recent snowstorm.
How does La Niña and the jet stream impact winter conditions in the United States?
Where are my El Niño impacts?!
Warmer-than-average waters in the tropical Pacific are expected to reach their peak soon. How has El Niño affected global weather so far this year?
...but it's still a seasonal forecaster's best friend.
Guest blogger Dennis Hartmann makes the case that warm waters in the western tropical Pacific—part of the North Pacific Mode climate pattern—are behind the weird U.S. winter weather of the past two seasons.