Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Water Vapor In Stratosphere Plays Role In Climate

02.10.2013
Water vapor changes in the stratosphere contribute to warmer temperatures and likely play an important role in the evolution of Earth’s climate, says a research team led by a Texas A&M University professor.

Andrew Dessler, a Texas A&M atmospheric sciences professor, and colleagues from the University of Colorado, NOAA (National Oceanic and Atmospheric Administration) and the Science and Technology Corp. have had their findings published in the Proceedings of the National Academy of Sciences.

The researchers found that increased surface temperatures, such as from the addition of carbon dioxide to the atmosphere, leads to increased humidity in the stratosphere. Because stratospheric water vapor is a greenhouse gas, this leads to additional warming, they said. This cycle is frequently called a climate feedback.

“We find that this stratospheric water vapor feedback is probably responsible for 5-10 percent of the total warming you get from adding carbon dioxide to the climate,” Dessler explained. “While it’s not really surprising that this process is going on, we were surprised at how important the process is for our climate system.”

Climate models already include this process, but unevenly. Some models predict large increases in stratospheric humidity, while others don’t, the researchers say.

“It’s clear to us that, if models want to make accurate predictions of climate change, they should get stratospheric water vapor right,” said Sean Davis, a research scientist at the Cooperative Institute for Research in Environmental Sciences at the University of Colorado at Boulder and study coauthor. He added, “A better understanding of the stratospheric water vapor feedback could help explain some of the spread among predictions of future climate change from different models,” referring to the projections made by the recently released 5th Assessment report of the Intergovernmental Panel on Climate Change (IPCC) last week.

Several years ago, Dessler was the first to observationally calculate the strength of the cloud feedback, showing that clouds play a key role in climate change.

The researchers used water vapor measurements from the Microwave Limb Sounder on board NASA’s Aura satellite. It also used simulations from NASA’s Goddard Earth Observing System Chemistry Climate Model. The project was funded by a grant from the National Science Foundation.

A short video explaining the feedback process can be viewed at http://bit.ly/16Ao9Nn.

About Research at Texas A&M University: As one of the world’s leading research institutions, Texas A&M is in the vanguard in making significant contributions to the storehouse of knowledge, including that of science and technology. Research conducted at Texas A&M represents total annual expenditures of more than $776 million. That research creates new knowledge that provides basic, fundamental and applied contributions resulting in many cases in economic benefits to the state, nation and world.

Media contact: Keith Randall, News & Information Services, at (979) 845-4644 or keith-randall@tamu.edu or Andrew Dessler at (979) 862-1427 or adessler@tamu.edu

For more news about Texas A&M University, go to http://tamutimes.tamu.edu/

Follow us on Twitter at https://twitter.com/TAMU

Keith Randall | Newswise
Further information:
http://www.tamu.edu

More articles from Earth Sciences:

nachricht Live from the ocean research vessel Atlantis
13.12.2018 | National Science Foundation

nachricht NSF-supported scientists present new research results on Earth's critical zone
13.12.2018 | National Science Foundation

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Data use draining your battery? Tiny device to speed up memory while also saving power

The more objects we make "smart," from watches to entire buildings, the greater the need for these devices to store and retrieve massive amounts of data quickly without consuming too much power.

Millions of new memory cells could be part of a computer chip and provide that speed and energy savings, thanks to the discovery of a previously unobserved...

Im Focus: An energy-efficient way to stay warm: Sew high-tech heating patches to your clothes

Personal patches could reduce energy waste in buildings, Rutgers-led study says

What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes - while significantly reducing your...

Im Focus: Lethal combination: Drug cocktail turns off the juice to cancer cells

A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.

The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...

Im Focus: New Foldable Drone Flies through Narrow Holes in Rescue Missions

A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.

Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...

Im Focus: Topological material switched off and on for the first time

Key advance for future topological transistors

Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

New Plastics Economy Investor Forum - Meeting Point for Innovations

10.12.2018 | Event News

EGU 2019 meeting: Media registration now open

06.12.2018 | Event News

 
Latest News

Data use draining your battery? Tiny device to speed up memory while also saving power

14.12.2018 | Power and Electrical Engineering

Tangled magnetic fields power cosmic particle accelerators

14.12.2018 | Physics and Astronomy

In search of missing worlds, Hubble finds a fast evaporating exoplanet

14.12.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>