Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New study sheds light on global warming trends

05.05.2014

New research by a team of Florida State University scientists shows the first detailed look at global land surface warming trends over the last 100 years, illustrating precisely when and where different areas of the world started to warm up or cool down.

The research indicates that the world is indeed getting warmer, but historical records show that it hasn't happened everywhere at the same rate.


Assistant Professor Zhaohua Wu, doctoral student Fei Ji, and Center for Ocean-Atmospheric Prediction Studies Direct Eric Chassignet have provided the first detailed look at when and where the earth has warmed up and cooled down.

Credit: Meredith Field/ Center for Ocean-Atmospheric Prediction Studies

And that new information even took scientists by surprise.

"Global warming was not as understood as we thought," said Zhaohua Wu, an assistant professor of meteorology at FSU.

Wu led a team of climate researchers including Fei Ji, a visiting doctoral student at FSU's Center for Ocean-Atmospheric Prediction Studies (COAPS); Eric Chassignet, director of COAPS; and Jianping Huang, dean of the College of Atmospheric Sciences at Lanzhou University in China. The group, using an analysis method newly developed by Wu and his colleagues, examined land surface temperature trends from 1900 onward for the entire globe, minus Antarctica.

Previous work by scientists on global warming could not provide information of non-uniform warming in space and time due to limitations of previous analysis methods in climate research.

The research team found that noticeable warming first started around the regions circling the Arctic and subtropical regions in both hemispheres. But the largest accumulated warming to date is actually at the northern midlatitudes. They also found that in some areas of the world, cooling had actually occurred.

"The global warming is not uniform," Chassignet said. "You have areas that have cooled and areas that have warmed."

For example, from about 1910 to 1980, while the rest of the world was warming up, some areas south of the equator — near the Andes — were actually cooling down, and then had no change at all until the mid 1990s. Other areas near and south of the equator didn't see significant changes comparable to the rest of the world at all.

The team's work is featured in the May 4 edition of the journal Nature Climate Change.

The detailed picture of when and where the world has warmed or cooled will provide a greater context to global warming research overall, Wu said.

Kathleen Haughney | Eurek Alert!
Further information:
http://www.fsu.edu

Further reports about: Antarctica Arctic Atmospheric COAPS Change Ocean-Atmospheric equator hemispheres temperature

More articles from Studies and Analyses:

nachricht Risk-taking propensity changes, especially in young adulthood and in older age
29.01.2016 | Max-Planck-Institut für Bildungsforschung

nachricht Designing a pop-up future
27.01.2016 | Harvard John A. Paulson School of Engineering and Applied Sciences

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

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

Im Focus: Automated driving: Steering without limits

OmniSteer project to increase automobiles’ urban maneuverability begins with a € 3.4 million budget

Automobiles increase the mobility of their users. However, their maneuverability is pushed to the limit by cramped inner city conditions. Those who need to...

Im Focus: Microscopy: Nine at one blow

Advance in biomedical imaging: The University of Würzburg's Biocenter has enhanced fluorescence microscopy to label and visualise up to nine different cell structures simultaneously.

Fluorescence microscopy allows researchers to visualise biomolecules in cells. They label the molecules using fluorescent probes, excite them with light and...

Im Focus: NASA's ICESat-2 equipped with unique 3-D manufactured part

NASA's follow-on to the successful ICESat mission will employ a never-before-flown technique for determining the topography of ice sheets and the thickness of sea ice, but that won't be the only first for this mission.

Slated for launch in 2018, NASA's Ice, Cloud and land Elevation Satellite-2 (ICESat-2) also will carry a 3-D printed part made of polyetherketoneketone (PEKK),...

Im Focus: Sinking islands: Does the rise of sea level endanger the Takuu Atoll in the Pacific?

In the last decades, sea level has been rising continuously – about 3.3 mm per year. For reef islands such as the Maldives or the Marshall Islands a sinister picture is being painted evoking the demise of the island states and their cultures. Are the effects of sea-level rise already noticeable on reef islands? Scientists from the ZMT have now answered this question for the Takuu Atoll, a group of Pacific islands, located northeast of Papua New Guinea.

In the last decades, sea level has been rising continuously – about 3.3 mm per year. For reef islands such as the Maldives or the Marshall Islands a sinister...

Im Focus: Energy-saving minicomputers for the ‘Internet of Things’

The ‘Internet of Things’ is growing rapidly. Mobile phones, washing machines and the milk bottle in the fridge: the idea is that minicomputers connected to these will be able to process information, receive and send data. This requires electrical power. Transistors that are capable of switching information with a single electron use far less power than field effect transistors that are commonly used in computers. However, these innovative electronic switches do not yet work at room temperature. Scientists working on the new EU research project ‘Ions4Set’ intend to change this. The program will be launched on February 1. It is coordinated by the Helmholtz-Zentrum Dresden-Rossendorf (HZDR).

“Billions of tiny computers will in future communicate with each other via the Internet or locally. Yet power consumption currently remains a great obstacle”,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

AKL’16: Experience Laser Technology Live in Europe´s Largest Laser Application Center!

02.02.2016 | Event News

From intelligent knee braces to anti-theft backpacks

26.01.2016 | Event News

DATE 2016 Highlighting Automotive and Secure Systems

26.01.2016 | Event News

 
Latest News

A new potential biomarker for cancer imaging

05.02.2016 | Life Sciences

Graphene is strong, but is it tough?

05.02.2016 | Materials Sciences

Tiniest Particles Shrink Before Exploding When Hit With SLAC's X-ray Laser

05.02.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>