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Latest Climate model Stories

2012-05-07 20:18:50

One popular climate record that shows a slower atmospheric warming trend than other studies contains a data calibration problem, and when the problem is corrected the results fall in line with other records and climate models, according to a new University of Washington study. The finding is important because it helps confirm that models that simulate global warming agree with observations, said Stephen Po-Chedley, a UW graduate student in atmospheric sciences who wrote the paper with...

2012-03-08 10:42:52

On the hottest day of the New York City summer in 2011, a white roof covering was measured at 42 degrees Fahrenheit cooler than the traditional black roof it was being compared to, according to a study including NASA scientists that details the first scientific results from the city's unprecedented effort to brighten rooftops and reduce its "urban heat island" effect. The dark, sunlight-absorbing surfaces of some New York City roofs reached 170 degrees Fahrenheit on July 22, 2011, a day...

2012-02-20 11:20:22

The instant communications technology that nurtured grassroots revolutions in the Arab world could also help farmers cope with climate change, according to Iowa State University researchers. And so the researchers — Steven Fales, a professor of agronomy; and Gene Takle, director of Iowa State's Climate Science Program, a professor of agronomy and of geological and atmospheric sciences — are organizing a symposium to explore that idea during the annual meeting of the American...

Image 1 - Human Activity, Not Solar Activity, Drives Global Warming
2012-02-01 05:11:53

A new NASA study underscores the fact that greenhouse gases generated by human activity -- not changes in solar activity -- are the primary force driving global warming. The study offers an updated calculation of the Earth's energy imbalance, the difference between the amount of solar energy absorbed by Earth's surface and the amount returned to space as heat. The researchers' calculations show that, despite unusually low solar activity between 2005 and 2010, the planet continued to absorb...

Image 1 - Mountain Hail In Colorado Could Disappear
2012-01-09 04:58:56

NOAA-led study shows less hail, more rain in region's future, with possible increase in flood risk Summertime hail could all but disappear from the eastern flank of Colorado's Rocky Mountains by 2070, according to a new modeling study by scientists from NOAA and several other institutions. Less hail damage could be good news for gardeners and farmers, said Kelly Mahoney, Ph.D., lead author of the study and a postdoctoral scientist at NOAA's Earth System Research Laboratory in Boulder,...

Climate Change Models May Underestimate Extinctions
2012-01-04 05:08:29

Animals and plants could be on a collision course created by climate change, and our current predictions might be underestimating how many will go extinct Predictions of the loss of animal and plant diversity around the world are common under models of future climate change. But a new study shows that because these climate models don't account for species competition and movement, they could grossly underestimate future extinctions. "We have really sophisticated meteorological models...

Image 1 - Climate Change Could Create Big Ecosystem Changes
2011-12-15 04:37:38

By 2100, global climate change will modify plant communities covering almost half of Earth's land surface and will drive the conversion of nearly 40 percent of land-based ecosystems from one major ecological community type - such as forest, grassland or tundra - toward another, according to a new NASA and university computer modeling study. Researchers from NASA's Jet Propulsion Laboratory and the California Institute of Technology in Pasadena, Calif., investigated how Earth's plant life...

2011-12-06 23:06:19

Scientists have developed important new insight into the sensitivity of global temperature to changes in the Earth´s radiation balance over the last half million years. The sensitivity of global temperature to changes in the Earth´s radiation balance (climate sensitivity) is a key parameter for understanding past natural climate changes as well as potential future climate change. In a study in Journal of Climate, researchers from the Universities of Southampton and Bristol for...

Clearing The Air On Cloud Simulations
2011-10-27 08:36:16

Climate models have a hard time representing clouds accurately because they lack the spatial resolution necessary to accurately simulate the billowy air masses. But Livermore scientists and international collaborators have developed a new tool that will help scientists better represent the clouds observed in the sky in climate models. Traditionally, observations from satellites infer the properties of clouds from the radiation field (reflection of sunlight back into space, or thermal...

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2011-08-12 05:15:00

The melting of Arctic sea ice may temporarily stabilize, and the ice may even expand, over the coming years, according to new research by scientists at the National Center for Atmospheric Research (NCAR). "As we learn more about climate variability, new and unexpected research results are coming to light," said Sarah Ruth, program director in the Division of Atmospheric and Geospace Sciences, which funds NCAR. "What's needed now are longer-term observations to better understand the effect of...


Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'