Featured Research

from universities, journals, and other organizations

Price For Decreased Acid Rain May Be Increased Global Warming

Date:
July 8, 1999
Source:
University Of Illinois At Urbana-Champaign
Summary:
Reducing future emissions of sulfur dioxide in an attempt to mitigate the acid-rain problem may aggravate the global-warming problem, a University of Illinois professor says.

Reducing future emissions of sulfur dioxide in an attempt to mitigate the acid-rain problem may aggravate the global-warming problem, a University of Illinois professor says.

"In the atmosphere, sulfur dioxide gas emitted by burning coal and oil is converted into sulfate aerosols that enhance the reflection of solar radiation, thereby tending to cool Earth's surface," said Michael Schlesinger, a U. of I. atmospheric scientist. "In recent studies, we found that decreasing the sulfur dioxide emissions led to significant regional warming in North America, Europe and Asia."

The studies were based on provisional greenhouse-gas and sulfur dioxide emissions developed by the Intergovernmental Panel on Climate Change. The IPCC is producing a Special Report on Emissions Scenarios, in part as background for the IPCC Third Assessment Report scheduled to be completed in 2001. In the special report there are four scenario families for the future emissions of greenhouse gases and sulfur dioxide.

To explore the potential effects, Schlesinger and his U. of I. colleagues -- Sergey Malyshev, Eugene Rozanov, Fanglin Yang and Natalia Andronova -- first used a simple climate/ocean model to calculate the change in global-mean surface temperature for the sulfur dioxide emissions of the four Special Report scenarios, as well as for the non-interventionist IS92a scenario of the IPCC Second Assessment Report.

"These global-mean temperatures were then used to scale the geographical distributions of temperature change simulated by our atmospheric general circulation/mixed-layer-ocean model for a tenfold increase in present-day sulfur dioxide emissions, both individually and jointly from six geographical regions," Schlesinger said.

The increasing sulfur dioxide emissions of the IS92a scenario result in a cooling contribution that helps to offset some of the greenhouse gas-induced warming, Schlesinger said, but the decreasing sulfur dioxide emissions of the four SRES scenarios result in the opposite: a significant warming of portions of North America, Europe and the North Atlantic, and Siberia.

"Thus it appears that mitigation of the acid-rain problem by future reductions in sulfur dioxide emissions exacerbates the greenhouse-warming problem by enhancing the warming in and near the regions where the sulfur dioxide emissions are reduced," Schlesinger said.

Schlesinger presented the group's findings in Bonn, Germany, at a joint meeting of the IPCC and the Subsidiary Body for Scientific and Technical Advice of the United Nations Framework Convention on Climate Change.


Story Source:

The above story is based on materials provided by University Of Illinois At Urbana-Champaign. Note: Materials may be edited for content and length.


Cite This Page:

University Of Illinois At Urbana-Champaign. "Price For Decreased Acid Rain May Be Increased Global Warming." ScienceDaily. ScienceDaily, 8 July 1999. <www.sciencedaily.com/releases/1999/07/990708075951.htm>.
University Of Illinois At Urbana-Champaign. (1999, July 8). Price For Decreased Acid Rain May Be Increased Global Warming. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/1999/07/990708075951.htm
University Of Illinois At Urbana-Champaign. "Price For Decreased Acid Rain May Be Increased Global Warming." ScienceDaily. www.sciencedaily.com/releases/1999/07/990708075951.htm (accessed July 25, 2014).

Share This




More Earth & Climate News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Goma Cheese Brings Whiff of New Hope to DRC

Goma Cheese Brings Whiff of New Hope to DRC

Reuters - Business Video Online (July 24, 2014) The eastern region of the Democratic Republic of Congo, mainly known for conflict and instability, is an unlikely place for the production of fine cheese. But a farm in the village of Masisi, in North Kivu is slowly transforming perceptions of the area. Known simply as Goma cheese, the Congolese version of Dutch gouda has gained popularity through out the region. Ciara Sutton reports. Video provided by Reuters
Powered by NewsLook.com
Bill Gates: Health, Agriculture Key to Africa's Development

Bill Gates: Health, Agriculture Key to Africa's Development

AFP (July 24, 2014) Health and agriculture development are key if African countries are to overcome poverty and grow, US software billionaire Bill Gates said Thursday, as he received an honourary degree in Ethiopia. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Higgins Breaks Record at Mt. Washington

Higgins Breaks Record at Mt. Washington

Driving Sports (July 24, 2014) Subaru Rally Team USA drivers David Higgins and Travis Pastrana face off against a global contingent of racers at the annual Mt. Washington Hillclimb in New Hampshire. Includes exclusive in-car footage from Higgins' record attempt. Video provided by Driving Sports
Powered by NewsLook.com
Storm Kills Three, Injures 20 at Virginia Campground

Storm Kills Three, Injures 20 at Virginia Campground

Reuters - US Online Video (July 24, 2014) A likely tornado tears through an eastern Virginia campground, killing three and injuring at least 20. Linda So reports. Video provided by Reuters
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