Featured Research

from universities, journals, and other organizations

Scientist Measures Role Of Science's Coolest Player: The Snow

Date:
December 7, 2005
Source:
University of Wisconsin-Madison
Summary:
What would the Earth be like if one fine day all the snow melted away? Obviously, it would be a much warmer place. But what's interesting is how much warmer, says Stephen Vavrus, an associate scientist at the Center for Climatic Research at the University of Wisconsin-Madison. Working with computer-generated simulations, Vavrus found that in the absence of snow cover, global temperatures would likely spike by about eight-tenths of a degree Celsius.

If all the planet's snow were to melt away, Earth would on average be around eight-tenths of a degree Celsius warmer, according to Stephen Vavrus, an associate scientist at the Center for Climatic Research at the University of Wisconsin-Madison. Vavrus generated computer simulations of a snow-free world to assess snow's impact on several climatic variables such as temperature and atmospheric circulation. This map illustrates the effects across the globe. (Map by: Stephen Vavrus/Center for Climatic Research)

What would the Earth be like if one fine day all the snow melted away?

Obviously, it would be a much warmer place. But what's interesting is how much warmer, says Stephen Vavrus, an associate scientist at the Center for Climatic Research at the University of Wisconsin-Madison. Working with computer-generated simulations, Vavrus found that in the absence of snow cover, global temperatures would likely spike by about eight-tenths of a degree Celsius. That increase represents as much as a third of the warming that climate change experts have predicted, should levels of heat-trapping greenhouse gases double.

"This was not just a what-if question," says Vavrus, whose work comes amidst mounting reports on the steady melt of Arctic ice. "I wanted to quantify the influence of global snow cover on the present-day climate because that has relevance for the type of climate changes we are expecting in the future." Vavrus will discuss his findings today during the fall meeting of the American Geophysical Union (Dec. 5-9, 2005).

Vavrus, a climate modeling specialist, digitally simulated a snow-free world, and measured the impact of missing snow cover on a range of climatic variables including soil temperatures, cloud cover, atmospheric circulation patterns and soil moisture levels.

Aside from his temperature-related projections, Vavrus also made the counterintuitive finding that in the absence of snow, total regions of permafrost-the permanently frozen soil of the cold north-are likely to expand in area. Without the insulating effect of snow, in other words, soils in colder regions of the world are in fact likely to get much colder. The surprising result has implications for the health of permafrost-associated ecosystems, and may influence decisions in the field of construction.

Already, permafrost changes have triggered structural problems in Alaskan buildings and roadways, says Vavrus, and "there's every reason to think we'll see even stronger effects in the future," he adds.

In forthcoming simulations, Vavrus plans to continue exploring the effects of both nearby and faraway snow cover on local climate conditions.


Story Source:

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


Cite This Page:

University of Wisconsin-Madison. "Scientist Measures Role Of Science's Coolest Player: The Snow." ScienceDaily. ScienceDaily, 7 December 2005. <www.sciencedaily.com/releases/2005/12/051207110313.htm>.
University of Wisconsin-Madison. (2005, December 7). Scientist Measures Role Of Science's Coolest Player: The Snow. ScienceDaily. Retrieved September 3, 2014 from www.sciencedaily.com/releases/2005/12/051207110313.htm
University of Wisconsin-Madison. "Scientist Measures Role Of Science's Coolest Player: The Snow." ScienceDaily. www.sciencedaily.com/releases/2005/12/051207110313.htm (accessed September 3, 2014).

Share This



More Earth & Climate News

Wednesday, September 3, 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
Halliburton Reaches $1B Gulf Spill Settlement

Halliburton Reaches $1B Gulf Spill Settlement

AP (Sep. 2, 2014) — Halliburton's agreement to pay more than $1 billion to settle numerous claims involving the 2010 BP oil spill could be a way to diminish years of costly litigation. A federal judge still has to approve the settlement. (Sept. 2) Video provided by AP
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