Much of the Northern Hemisphere experienced cold land surface temperatures in December 2009, but the Arctic was exceptionally warm.
Published Jan 9, 2010
This color-coded map shows temperature anomalies for the United States, Canada, eastern Siberia, and Greenland for January 9 to 16, 2011.
Published Jan 26, 2011
It was cold across the eastern part of North America, but the opposite was true in other parts of the world.
Published Dec 6, 2018
In March 2013, the same meteorological phenomenon brought warm weather to the Arctic and cool air spilling into the North America, Europe, and Asia.
Published Apr 3, 2013
Acquired January 7, 2010, this image shows snow blanketing England, from the east to west coast. The cities of Manchester, Birmingham, and London appear as ghostly gray shapes on the icy surface.
Published Jan 8, 2010Image of the Day Land Severe Storms Human Presence Snow and Ice
The culprit is a familiar one: the polar vortex.
Published Jan 29, 2019
A convoluted jet stream plunged Europe into a severe cold snap in late January and early February 2012.
Published Feb 10, 2012
Blasts of Arctic air spilling into the Midwest and Northeast are poised to make New Year’s Eve frigid for many Americans.
Published Dec 29, 2017
The Arctic Oscillation, La Niña, and North Atlantic Oscillation combine to steer winter's cold, snowy weather away from the United States.
Published Feb 8, 2012
This image shows average Arctic sea ice concentration for January 2011, the lowest January extent in the satellite record.
Published Feb 8, 2011
Ireland got a coating of snow and ice this week, the latest expression of an unusually early and brisk start to winter.
Published Dec 4, 2010
Winter turned fierce in the opening weeks of 2009, and part of the reason for the cold snaps and winter storms came from big changes in the atmosphere about 20 kilometers above the Earth.
Published Feb 7, 2009
