. 24/7 Space News .

Arctic sunshine revs up greenhouse gases
by Staff Writers
Chapel Hill, N.C. (UPI) Feb 11, 2013

disclaimer: image is for illustration purposes only

Sunlight in the arctic is delivering a double climate blow, researchers say, by both melting ice and speeding up the release of greenhouse gases.

Dead vegetation preserved in far northern permafrost under ice is estimated to contain twice as much carbon dioxide as is held by the atmosphere, and global warming could allow this plant matter to decompose, releasing both that CO2 and methane, they say.

Rose Cory at the University of North Carolina at Chapel Hill and her colleagues, studying melting permafrost sites in the arctic, found the amount of CO2 released was 40 percent higher when the melt water was exposed to ultraviolet light than when kept dark, buried in the permafrost.

The increase is because ultraviolet light, a component of sunlight, puts more energy into soil bacteria and fungi and accelerates the rate at which they break down organic matter and release CO2.

Major thawing in the arctic could be a major source of positive feedback that could accelerate global warming, the researchers said.

"Our task now is to quantify how fast this previously frozen carbon may be converted to CO2 so that models can include the process," Cory told NewScientist.com.


Related Links
Beyond the Ice Age

Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

Memory Foam Mattress Review

Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

Get Our Free Newsletters
Space - Defense - Environment - Energy - Solar - Nuclear


Polar bear researchers urge governments to act now and save the species
Edmonton, Canada (SPX) Feb 08, 2013
A University of Alberta polar bear researcher along with eleven international co-authors are urging governments to start planning for rapid Arctic ecosystem change to deal with a climate change catastrophe for the animals. U of A professor Andrew Derocher co-authored a policy perspective in the journal Conservation Letters urging governments with polar bear populations to accept that just ... read more

Building a lunar base with 3D printing

US, Europe team up for moon fly-by

Russia to Launch Lunar Mission in 2015

US, Europe team up for moon fly-by

In milestone, Mars rover collects first bedrock sample

How The World's Saltiest Pond Gets Its Salt; Implications For Water On Mars

Lockheed Martin Completes Assembly, Begins Environmental Testing of NASA's MAVEN Spacecraft

NASA Curiosity Rover Collects First Martian Bedrock Sample

Supersonic skydiver even faster than thought

Ahmadinejad says ready to be Iran's first spaceman

Iran's Bio-Capsule Comes Back from Space

A Hero For Humankind: Yuri Gagarin's Spaceflight

Reshuffle for Tiangong

China to launch 20 spacecrafts in 2013

NASA to Send Inflatable Pod to International Space Station

ISS to get inflatable module

ESA workhorse to power NASA's Orion spacecraft

Competition Hopes To Fine Tune ISS Solar Array Shadowing

Ariane 5 delivers record payload off back-to-back launches this week

Eutelsat and Arianespace sign new multi-year multiple launch services agreement

Ariane 5 Arrives At Kourou For 4th Automated Transfer Vehicle Mission

Arianespace Launches Six Globalstar Birds Using Starsem Soyuz

Earth-like planets are right next door

Direct Infrared Image Of An Arm In Disk Demonstrates Transition To Planet Formation

Kepler Data Suggest Earth-size Planets May Be Next Door

Earth-like planets may be closer than thought: study

Nextdoor renovates before taking on the world

High-energy X-rays shine light on mystery of Picasso's paints

ORNL scientists solve mercury mystery

Indra Develops The First High-Resolution Passive Radar System

The content herein, unless otherwise known to be public domain, are Copyright 1995-2012 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement