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 Is Marriage Good or Bad for the Figure?
29.06.2015 | Max-Planck-Institut für Bildungsforschung

nachricht Fructose produces less rewarding sensations in the brain
25.06.2015 | Universität Basel

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: X-rays and electrons join forces to map catalytic reactions in real-time

New technique combines electron microscopy and synchrotron X-rays to track chemical reactions under real operating conditions

A new technique pioneered at the U.S. Department of Energy's Brookhaven National Laboratory reveals atomic-scale changes during catalytic reactions in real...

Im Focus: Iron: A biological element?

Think of an object made of iron: An I-beam, a car frame, a nail. Now imagine that half of the iron in that object owes its existence to bacteria living two and a half billion years ago.

Think of an object made of iron: An I-beam, a car frame, a nail. Now imagine that half of the iron in that object owes its existence to bacteria living two and...

Im Focus: Thousands of Droplets for Diagnostics

Researchers develop new method enabling DNA molecules to be counted in just 30 minutes

A team of scientists including PhD student Friedrich Schuler from the Laboratory of MEMS Applications at the Department of Microsystems Engineering (IMTEK) of...

Im Focus: Bionic eye clinical trial results show long-term safety, efficacy vision-restoring implant

Patients using Argus II experienced significant improvement in visual function and quality of life

The three-year clinical trial results of the retinal implant popularly known as the "bionic eye," have proven the long-term efficacy, safety and reliability of...

Im Focus: Lasers for Fast Internet in Space – Space Technology from Aachen

On June 23, the second Sentinel mission was launched from the space mission launch center in Kourou. A critical component of Aachen is on board. Researchers at the Fraunhofer Institute for Laser Technology ILT and Tesat-Spacecom have jointly developed the know-how for space-qualified laser components. For the Sentinel mission the diode laser pump module of the Laser Communication Terminal LCT was planned and constructed in Aachen in cooperation with the manufacturer of the LCT, Tesat-Spacecom, and the Ferdinand Braun Institute.

After eight years of preparation, in the early morning of June 23 the time had come: in Kourou in French Guiana, the European Space Agency launched the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

World Conference on Regenerative Medicine in Leipzig: Last chance to submit abstracts until 2 July

25.06.2015 | Event News

World Conference on Regenerative Medicine: Abstract Submission has been extended to 24 June

16.06.2015 | Event News

MUSE hosting Europe’s largest science communication conference

11.06.2015 | Event News

 
Latest News

3D Plasmonic Antenna Capable of Focusing Light into Few Nanometers

30.06.2015 | Physics and Astronomy

X-rays and electrons join forces to map catalytic reactions in real-time

30.06.2015 | Physics and Astronomy

A polarizing view

30.06.2015 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>