Featured Research

from universities, journals, and other organizations

New Evidence Of Link Between Carbon Dioxide Emissions And Climate Change In Boreal Ecosystems

Date:
February 27, 2007
Source:
Purdue University
Summary:
New research aimed at understanding the link between carbon dioxide emissions and climate change in boreal systems has found clear links between both spring and fall temperature changes and carbon uptake/loss. Dr. Kevin Robert Gurney, assistant professor in the Earth & Atmospheric Science/Agronomy at Purdue University and associate director of the Purdue Climate Change Research Center, presented these results at the American Association for the Advancement of Science meeting in San Francisco, Calif., on December 17.

New research aimed at understanding the link between carbon dioxide emissions and climate change in boreal systems has found clear links between both Spring and Fall temperature changes and carbon uptake/loss. Dr Kevin Robert Gurney, assistant professor in the Earth & Atmospheric Science/Agronomy at Purdue University and Associate Director of the Purdue Climate Change Research Center, presented these results at the "Is a Warmer Arctic Adding Carbon Dioxide to the Atmosphere" session of American Association for the Advancement of Science meeting in San Francisco, CA on December 17th.

The research examined the variations in carbon flux from boreal ecosystems, uncovered by the "inverse" method, in relation to measurements of temperature, precipitation and climate indices. The study shows that Boreal N America removes carbon from the Earth's atmosphere during years in which the region experiences warm Spring temperatures and rainfall. Boreal Asia, however, exhibits an opposing response - years with above normal Fall temperatures and rainfall result in net carbon emissions. "A warming Canada may mean Canadian forests will act as a sink to atmospheric CO2," said Gurney, "while boreal Asia could lose ecosystem carbon to the atmosphere as the regions warms."

The results are directly applicable to climate change studies which attempt to link the land and ocean carbon cycles to future warming. Some studies have shown an additional temperature increase (above that derived from industrial greenhouse gases) due primarily to carbon emissions from warmed global soils. The research presented by Gurney suggests that this may occur in Asia but not in North America. "This should help us perform better projections

The results for Boreal North America are further linked to El Nino events. "The greater uptake in Springtime Boreal North American in warm, wet years appears to be related to the El Nino/Southern Oscillation," said Gurney. "The teleconnection is remarkable, you can see the tropical pacific temperature patterns associated with El Nino travel north and impact boreal North America, inducing greater uptake".

Temperature and Precipitation are not the only drivers of ecosystem carbon exchange, noted Gurney, but approximately one-half of the variations in Spring and Fall carbon exchange were explained by variations in Temperature and Precipitation. "Human activity such as harvest or fire can also have a large impact on these systems and we are turning to exploring those next."

.

Story Source:

The above story is based on materials provided by Purdue University. Note: Materials may be edited for content and length.


Cite This Page:

Purdue University. "New Evidence Of Link Between Carbon Dioxide Emissions And Climate Change In Boreal Ecosystems." ScienceDaily. ScienceDaily, 27 February 2007. <www.sciencedaily.com/releases/2007/02/070218194404.htm>.
Purdue University. (2007, February 27). New Evidence Of Link Between Carbon Dioxide Emissions And Climate Change In Boreal Ecosystems. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2007/02/070218194404.htm
Purdue University. "New Evidence Of Link Between Carbon Dioxide Emissions And Climate Change In Boreal Ecosystems." ScienceDaily. www.sciencedaily.com/releases/2007/02/070218194404.htm (accessed September 2, 2014).

Share This




More Earth & Climate News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Thousands of Fish Dead in Mexico Lake

Raw: Thousands of Fish Dead in Mexico Lake

AP (Sep. 2, 2014) — Over 53 tons of rotting fish have been removed from Lake Cajititlan in western Jalisco state. Authorities say that the thousands of fish did not die of natural causes. (Sep. 2) Video provided by AP
Powered by NewsLook.com
Raw: Iceland Volcano Spewing Smoke

Raw: Iceland Volcano Spewing Smoke

AP (Sep. 2, 2014) — The alert warning for the area surrounding Iceland's Bardarbunga volcano was kept at orange on Tuesday, indicating increased unrest with greater potential for an eruption. Smoke is spewing from the volcano, and lava is spouting nearby. (Sept. 2) Video provided by AP
Powered by NewsLook.com
U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

Newsy (Sep. 2, 2014) — The U.N. says the problem is two-fold — quarantine zones and travel restrictions are limiting the movement of both people and food. Video provided by Newsy
Powered by NewsLook.com
Sharks Off the Menu and on the Tourist Trail in Palau

Sharks Off the Menu and on the Tourist Trail in Palau

AFP (Sep. 2, 2014) — Tourists in Palau clamour to dive with sharks thanks to a pioneering conservation initiative -- as the island nation plans to completely ban commercial fishing in its vast ocean territory. 01:15 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins