Topic: National Center for Atmospheric Research
All Content
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Will we ever understand 2012 drought? Study blames 'random weather' (+video)
The drought of 2012 was more about unusual weather patterns than global warming, says a study. But its authors acknowledge the record-smashing event likely will be a puzzle for years to come.
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Are human-caused and natural global warming different? Study says yes.
A study suggests that human-caused and natural global warming episodes affect rainfall rates differently. The finding could help scientists better forecast what's ahead.
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New York's heat may be warming Siberia
Heat from northern cities from New York to Tokyo could warm winters in Canada and Siberia, according to a new study, but cool the fall in the western US and Eastern Europe.
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2012 hottest year on record in the US by large margin
A brutal combination of a widespread drought and a mostly absent winter pushed the average annual US temperature last year up to 55.32 degrees Fahrenheit, the government announced Tuesday.
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Blocking patterns: How global warming might have worsened US drought
Two teams of researchers find that subtle changes brought about by global warming might be amplifying atmospheric blocking patterns, which keep weather conditions in place for a long time.
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Hurricane Isaac storm surge reversed flow of Mississippi River
Hurricane Isaac was only a Category 1, but its storm surge and slow pace led to inland flooding and reversed the Mississippi for 24 hours. Scientists are working to better forecast these effects.
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July was hottest month in US on record, reports NOAA (+video)
July 2012's average temperature of 77.6 degrees Fahrenheit for the continental United States beat the previous record holder, July 1936, by one fifth of a degree, reports the National Oceanographic Atmospheric Administration.
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Is global warming behind the recent heat waves? (+video)
The unusual heat waves felt in Texas, Oklahoma, Moscow, and elsewhere in recent years are almost certainly a result of global warming, according to a study led by NASA scientist and climate activist James Hansen.
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How summer thunderstorms could be punching new holes in the ozone layer (+video)
A study looking at conditions in the lower stratosphere, where the ozone layer resides, suggests a link between climate change and the amount of ultraviolet radiation reaching Earth's surface.
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Storm clouds could destroy ozone layer, study suggests
A recent study suggests that highly reactive chlorine and bromine molecules ejected by cumulonimbus clouds are punching holes in the ozone layer over the United States.
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Hey, what happened to winter? What its wimpiness portends for spring.
Despite a few powerful snowstorms, the winter of 2011-12, with record-breaking temperatures and less precipitation than normal, has been the fourth warmest on record in the US. What gives?
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Climate change warning: brace for hotter heat waves, stronger storms
A new report from the Intergovernmental Panel on Climate Change projects that such events are likely to occur if greenhouse-gas emissions continue unabated.
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Prototype of next-generation weather satellite: Can it go to work fast enough?
After cost overruns and years of delay, the US is set to launch a prototype weather satellite before dawn Friday. Its data are badly needed as the number of Earth-observing satellites dwindle.
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Climate study, funded in part by conservative group, confirms global warming
The latest global warming results confirm those from earlier, independent studies by scientists at NASA and elsewhere that came under fire from skeptics in an episode known as 'climategate.'
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Extent of Arctic summer sea ice at record low level
New data indicates the continuation of a long-term decline in summer ice underway since at least 1979. Researchers say roughly half the decline can be attributed to global warming.
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Why airplanes make it rain or snow
Aircraft create more rain near airports by punching holes in the clouds, effectively seeding the clouds, according to a new study of the phenomenon.
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Weather is costly – up to $243 billion a year
Weather can boost or depress the US economy, a new study finds. And that's just everyday weather, not counting tornadoes and other devastating events.
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Oklahoma, Alabama, Joplin: Why we're seeing so many tornadoes and superstorms
The superfunnels that hit Tuscaloosa, Ala., in late April and Joplin, Mo., on Sunday, are generated by storm systems whose journeys across the country are slowed by a roadblocked jet stream.
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Winter storm raises the question: What's going on with the weather?
This week's winter storm – and others before it – are being influenced by climate patterns in the Arctic and North Atlantic. Scientists are working to understand how these patterns work.
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Do pre-winter snowstorms signal a harsh winter?
Tuesday marks the first day of winter, but many people in the United States and Europe have already seen a preview. Can we expect a snowy winter?
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Polar bear 'doomed'? Only if greenhouse-gas emissions aren't cut.
Greenhouse-gas emissions worldwide must be cut to avoid a disappearance of summer sea ice in the Arctic, which is crucial to the polar bear.
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Global weather: 2010 in running to be warmest year on record
If November and December temperatures stay relatively warm, 2010 could capture the record for warmest year, an early analysis shows. This year has also been marked by extreme weather events.
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Moses' parting of the Red Sea: Is there a physical explanation?
A new paper suggests that an area near the Red Sea area could have had favorable characteristics for 'wind setdown' some 3,000 years ago.
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Russia fires caused by global warming? Maybe not, say scientists.
The Kremlin's top meteorologist said that Russia's recent spate of extreme weather and wildfires 'are signs of global warming.' That's not quite right, say climate scientists.
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At height of hurricane season, research teams take on storms
The research projects are aimed at giving forecasters more tools for improving storm forecasts. The peak of the hurricane season is between now and the end of October.
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