May 17, 2010
The year 2010 brought a difficult and sometimes tragic few months of weather events—first the snowstorms and record cold that battered much of the Northern Hemisphere, then tornadoes and floods in the United States.
Atlantic sea-surface temperatures, May 2010
April 09, 2010
There’s only so much air to go around. Since we inhale trillions of molecules with every breath, a few of them may have been exhaled by people who lived hundreds or thousands of years ago.
Canadian smoke plume, 2008
April 02, 2010
The downpours of March suggest that the most noteworthy aspect of the Northeast’s winter was the intense precipitation rather than unusually cold air.
UCAR Magazine
February 25, 2010
Like a cat toying with its prey, an intense area of low pressure took swipes at New England and the mid-Atlantic.
UCAR Magazine
February 08, 2010
Residents of the mid-Atlantic can be forgiven if they’re craving a bit of calm. The weekend of 5–6 February brought what’s been variously dubbed Snowpocalypse II, Snowmageddon, Snowtastrophe, and the Superbowl Superstorm.
UCAR Magazine
January 27, 2010
Even with modern observational equipment, birds can still be useful in sensing the boundary layer—the region of the atmosphere closest to the surface.
UCAR Magazine
January 15, 2010
Even if the onslaught paled next to great winter outbreaks of the past, it was impressively persistent across some influential areas, including southeast England and the U.S. mid-Atlantic.
Extent of snow cover on 14 January
January 15, 2010
Clearly, the end of the Copenhagen conference isn’t the end of work on climate change—though, with regards to Winston Churchill, it might be the end of the beginning.
UCAR Magazine
January 08, 2010
No matter how you slice it, the last few weeks have been consistently wintry across large chunks of North America and Eurasia.
AO index for September 2009-January 2010
January 07, 2010
Rich Anthes, UCAR president, believes that it is vital that we pay attention to what electronic communication can take from us, as well as what it can give us.
Richard Anthes
January 06, 2010
Have you ever looked up in the sky and seen something totally surprising?
Circumzenithal arc
December 16, 2009
Amid the strife of the Copenhagen climate summit, one area of acknowledged progress was in ways to help preserve tropical forests and their vast stores of carbon in developing countries.
Rainforest in Congo
December 16, 2009
Sometimes the numbers just don’t add up, even when you know they need to. Attendees at the Copenhagen meeting got a taste of that as the massive meeting struggled to accommodate its guests.
UCAR Magazine
December 13, 2009
A year after she was finishing a two-year appointment at NCAR, Mercy Borbor Córdova was literally on the world stage, serving as a delegate from Ecuador at the Copenhagen climate summit.
UCAR Magazine
December 10, 2009
At first glance, the Copenhagen conference seemed like an alternate universe—enormous, byzantine, and riddled with customs and folkways that weren’t at all obvious to someone who’s never been to such a meeting.
UCAR Magazine
December 08, 2009
A group of scientists has put forth a new tool that combines four distinct measures of climate change into a single number—and the trend is clearly in one direction.
UCAR Magazine
December 06, 2009
There was a palpable sense of history in the making across Europe as some 15,000 expected participants in the Copenhagen climate conference began to converge upon the Continent.
UCAR Magazine
December 02, 2009
Margaret "Peggy" LeMone takes another stab at the challenge of showing that snow depth decreases at least in part because the snow “settles” and increases in density.
UCAR Magazine
November 24, 2009
Even though reports continue to pour in about melting glaciers, sea ice loss, and temperatures across much of the globe remaining unusually warm, fewer and fewer Americans seem to believe the climate is warming.
Consensus and controversy:  Which makes the news?
November 18, 2009
Few other parts of the world are showing climatic trends as distinct and ominous as Australia’s—and these changes are broadly consistent with what climate models tell us the 21st century has in store for the continent.
UCAR Magazine
November 18, 2009
Diplomats from almost 200 countries met in Copenhagen, Denmark, to huddle, confer, cajole, and eventually forge the structure of a new global agreement to reduce carbon emissions.
UCAR Magazine
November 05, 2009
Every snowfall is different, including how much water is packed into the flakes and how that changes over the life of a storm. This can make it very hard to figure out how much snow “really” falls in a given storm.
UCAR Magazine
October 28, 2009
The presence of El Niño boosts the odds of big Denver-area snowstorms, even though the region's winters as a whole aren’t substantially wetter during El Niño. It’s a good example of nuance in the relationship between El Niño and climate.
A snow-covered bench in Louisville, CO
October 12, 2009
While most El Niños tend to inhibit Atlantic hurricanes, the Modoki variety, with its peak warming displaced further west from the Atlantic, appears to leave more room for a bumper crop in at least some years.
SSTs in eastern tropical Pacific
September 21, 2009
The public is keenly interested in the Sun and its doings. “Sunspots” is one of the most frequent search terms bringing visitors to the NCAR/UCAR website.
Sunspots

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