Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Researchers Discover ‘Hole’ in Global Warming Predictions

22.09.2004


Climate change in daily maximum temperature (K) in summer (June-July-August) simulated by RegCM2. The change is the difference between the future scenario decade (2040s) and current decade (1990s). Warming-hole averages in our analyses use the region delineated by the inner frame (35–40_N, 99–92_W). SLU/ISU graphic


In the future, global warming might not be as severe in the central United States as in other parts of the country, according to scientists at Saint Louis University and Iowa State University (ISU).

Using a detailed regional climate model, these researchers estimate summertime daily maximum temperatures will not climb as high in a Midwestern region -- centered on the Missouri/Kansas border -- as anywhere else in the United States. The hole stretches for hundreds of miles and includes Missouri, Iowa, Nebraska and Oklahoma.

The findings are published in the current issue of Geophysical Research Letters. The article’s lead author is Zaitao Pan, Ph.D., an assistant professor of earth and atmospheric sciences at Saint Louis University. The researchers say the findings underscore the need to consider the impact of global warming on a region-by-region basis.



“The modeling showed that warming in the United States will be stronger in winter than summer and stronger at night than during the day,” Pan said. “But we found what looked to us like a ‘hole’ in the daytime warming in summer, which was a surprise.”

Pan collaborated with scientists at the Regional Climate Modeling Laboratory at ISU, where he earned his Ph.D. and conducted part of this research. After discovering the ‘hole’ in climate projections for the 2040s, Pan went back to carefully examine the observed maximum daily temperatures from 1975-2000 in a region that centers in eastern Kansas and touches parts of Missouri, Oklahoma, Nebraska and Iowa. “We found that, in fact, this hole already has started to develop,” he said.

Ray Arritt, agronomy professor at ISU, said the existence of this “hole” in the warming makes sense. “Our model tells us the future climate will have more rainfall and wetter soil, so more of the sun’s energy goes into evaporating water than heating the air,” he said. “Rainfall in the northern Great Plains already has increased by about 10 percent over the past few decades, which is consistent with our predictions.”

Team members caution that independent evaluations are needed to confirm this finding and to determine whether the ‘hole’ might be a temporary phenomenon that will disappear as global warming becomes more severe in the latter half of the 21st century. In addition to Pan and Arritt, co-authors are Gene Takle, Bill Gutowski, Chris Anderson and Moti Segal of ISU.

Clayton Berry | EurekAlert!
Further information:
http://www.slu.edu

More articles from Earth Sciences:

nachricht NASA eyes Pineapple Express soaking California
24.02.2017 | NASA/Goddard Space Flight Center

nachricht 'Quartz' crystals at the Earth's core power its magnetic field
23.02.2017 | Tokyo Institute of Technology

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>