Featured Research

from universities, journals, and other organizations

Lake Superior Summer Temperatures Rising Faster Than Regional Air Temperatures

Date:
March 23, 2007
Source:
American Geophysical Union
Summary:
A new analysis of data from buoys, weather stations, and historical ice records indicates that summer surface temperatures of Lake Superior have increased approximately 2.5 degrees C since 1979, roughly twice the rate of regional atmospheric warming.

A new analysis of data from buoys, weather stations, and historical ice records indicates that summer surface temperatures of Lake Superior have increased approximately 2.5C since 1979, roughly twice the rate of regional atmospheric warming.

Austin and Colman hypothesize that declining winter ice cover is causing the lake to absorb more solar radiation than it did in past years. The increased absorption, in turn, causes earlier stratification of the lake at a rate of roughly half a day per year.

Large mid-latitude lakes often freeze over in winter, mix thoroughly during spring and fall, and stratify in summer due to solar heating. The earlier start to Lake Superior's stratified season significantly increases the period over which the lake warms during the summer months, resulting in higher summer temperatures. Though little-studied, the response of large lakes to climate change will likely have an important regional effect.

Title: Lake Superior summer water temperatures are increasing more rapidly than regional air temperatures: a positive ice-albedo feedback

Authors: Jay A. Austin: Large Lakes Observatory and Department of Physics, University of Minnesota, Duluth; Steven M. Colman: Large Lakes Observatory and Department of Geology, University of Minnesota, Duluth.

Source: Geophysical Research Letters (GRL) paper 10.1029/2006GL029021, 2007


Story Source:

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


Cite This Page:

American Geophysical Union. "Lake Superior Summer Temperatures Rising Faster Than Regional Air Temperatures." ScienceDaily. ScienceDaily, 23 March 2007. <www.sciencedaily.com/releases/2007/03/070322110147.htm>.
American Geophysical Union. (2007, March 23). Lake Superior Summer Temperatures Rising Faster Than Regional Air Temperatures. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2007/03/070322110147.htm
American Geophysical Union. "Lake Superior Summer Temperatures Rising Faster Than Regional Air Temperatures." ScienceDaily. www.sciencedaily.com/releases/2007/03/070322110147.htm (accessed July 24, 2014).

Share This




More Earth & Climate News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Observation Boat to Protect Cetaceans During Ship Transfer

Observation Boat to Protect Cetaceans During Ship Transfer

AFP (July 22, 2014) As part of the 14-ship convoy that will accompany the Costa Concordia from the port of Giglio to the port of Genoa, there will be a boat carrying experts to look out for dolphins and whales from crossing the path of the Concordia. Duration: 01:02 Video provided by AFP
Powered by NewsLook.com
New Orleans Plans to Recycle Cigarette Butts

New Orleans Plans to Recycle Cigarette Butts

AP (July 21, 2014) New Orleans is the first U.S. city to participate in a large-scale recycling effort for cigarette butts. The city is rolling out dozens of containers for smokers to use when they discard their butts. (July 21) Video provided by AP
Powered by NewsLook.com
Shark Sightings a Big Catch for Cape Tourism

Shark Sightings a Big Catch for Cape Tourism

AP (July 21, 2014) A rise in shark sightings along the shores of Chatham, Massachusetts is driving a surge of eager vacationers to the beach town looking to catch a glimpse of a great white. (July 21) Video provided by AP
Powered by NewsLook.com
Spectacular Lightning Storm Hits London

Spectacular Lightning Storm Hits London

AFP (July 19, 2014) A spectaCular lightning storm struck the UK overnight Friday. Images of lightning strikes over the Shard and Tower Bridge in central London. Duration: 00:23 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