Navigation Links
Arctic climate models playing key role in polar bear decision
Date:3/11/2008

odels contain some element of uncertainty, DeWeaver says.

"A climate model is not a crystal ball," he says. "It's impossible to make a perfect representation of climate... There are choices you make in model development that lead to a range of model behaviors. Often it is not possible to say that one [model] is better than another."

A discussion of the uncertainty inherent to climate models sometimes creates the impression that the models cannot provide useful information, he says, which is absolutely not the case.

Instead, he likens climate modeling to other predictive sciences like weather forecasting and economics. While short-term predictions may accurately pinpoint specifics, longer-scale projections are expected to reveal bigger-picture trends but fewer details.

For Arctic sea ice, the trend is clear, DeWeaver says - all models point to widespread reductions in sea ice in coming decades. What's less certain is how much melting to expect and how quickly.

Since each model represents climate in a slightly different way, the exact degree of melting - and timing of the first occurrence of an ice-free Arctic - vary from model to model.

Far from being a drawback, these variations in model output are "enormously helpful in understanding a range of outcomes," DeWeaver says. "Having a multi-modal ensemble gives you a way to boil things down to the essentials," identifying the most robust changes consistent across several models.

Anticipated climate change has been a key element of the polar bear equation throughout the entire listing process, he says. Unlike most species considered for federal protection, polar bears' numbers have not yet shown significant decline.

However, escalating habitat losses anticipated due to global warming and other pressures are expected to severely impact bear populations in the near future, according to the listing petition filed by the advocacy group t
'/>"/>

Contact: Eric DeWeaver
deweaver@aos.wisc.edu
608-265-5438
University of Wisconsin-Madison
Source:Eurekalert

0

GOOD

Page: 1 2 3

Related biology news :

1. Antarcticas coldest, darkest season draws Montana State University researchers
2. Has the mystery of the Antarctic ice sheet been solved?
3. Krill discovered living in the Antarctic abyss
4. Observing sustainable tourism in Antarctica
5. Antarctic life hung by a thread during ice ages
6. Scientists expand understanding of how river carbon impacts the Arctic Ocean
7. Antarctic expedition provides new insights into the role of the Southern Ocean for global climate
8. Exploration of lake hidden beneath Antarcticas ice sheet begins
9. Antarctic ice loss
10. High degree of resistance to antibiotics in Arctic birds
11. Massive dinosaur discovered in Antarctica sheds light on life, distribution of sauropodomorphs
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/18/2013)... hacker lab. At Brandeis University, sophisticated computational models ... scientists understand the complex interplay between genomic data, ... outer "shell" critical for replication. ... are finding will help researchers alter virus assembly, ... Jason Perlmutter, first author of the scientific paper ...
(Date:6/18/2013)... Joshua Obar, Ph.D., Department of Immunology and Infectious Diseases, ... ICAAC Young Investigator Award for his research on factors ... infection. , Obar earned his B.A. in Microbiology ... to complete his Ph.D. in Microbiology and Immunology from ... thesis research in Edward Usherwood,s laboratory at the Geisel ...
(Date:6/18/2013)... of DNA and this modification can occur in ... now, scientists believed that this epigenetic phenomenon actively ... team of researchers from the University of Geneva ... at the Faculty of Medicine, reveals that this ... methylation may play both a passive and active ...
Breaking Biology News(10 mins):Computer modeling technique goes viral at Brandeis 2The American Society for Microbiology honors Joshua Obar 2The secret of DNA methylation 2
... 20th century and its link to race is the focus of ... Associate Professor Stephen Pemberton, PhD, an expert on the history of ... at the National Institutes of Health (NIH), Bethesda, 100th anniversary symposium ... B. Herrick. The event will be webcast. For more, ...
... of the Gulf oil spill, the possible risks of ... of an endangered fish in the Colorado River are ... Journalism Awards. The awards, administered by the American ... inception in 1945, go to professional journalists for distinguished ...
... a foreign object such as a catheter enters the body, ... a slick coating a biofilm that is highly ... be defeated by a basic approach of conventional means. Instead ... the key players in the network and how they operate. ...
Cached Biology News:Sickle cell disease and its link to race focus of NJIT researcher at NIH event 2Winners of 2010 AAAS Kavli Science Journalism Awards 2Winners of 2010 AAAS Kavli Science Journalism Awards 3Winners of 2010 AAAS Kavli Science Journalism Awards 4Winners of 2010 AAAS Kavli Science Journalism Awards 5Winners of 2010 AAAS Kavli Science Journalism Awards 6Winners of 2010 AAAS Kavli Science Journalism Awards 7Winners of 2010 AAAS Kavli Science Journalism Awards 8Research provides new leads in the case against drug-resistant biofilms 2
(Date:6/18/2013)... , June 18, 2013  regulated information — Global ... Klauk today announced the launch of a new ... ones. The Pledge empowers the ... stand and make a personal commitment to demand more: ... health care team and additional partial-onset seizure control.  More ...
(Date:6/18/2013)... 18, 2013 The "Bioinformatics Market By Sector ... Management Tools & Data Analysis Services) & Application (Genomics, Proteomics ... Major Market Drivers, Restraints, and Opportunities in North ... Asia-Pacific and Rest of World. Browse ... 22 Figures 364 Pages ...
(Date:6/18/2013)... This webinar will examine the history ... and review the basic FDA regulations and guiding ... these principles through real world case studies and ... on FDA regulations and guidance related to prescription ... traditional and newer forms of promotional materials for ...
(Date:6/18/2013)... , June 18, 2013   Lexicon ... a biopharmaceutical company focused on discovering breakthrough treatments ... Northcott has joined the company as its ... Mr. Northcott brings extensive commercial experience to Lexicon, ... a variety of therapeutic areas. Mr. ...
Breaking Biology Technology:Professional Golfer Jeff Klauk Tees Off New Pledge Campaign for People Living with Epilepsy 2Professional Golfer Jeff Klauk Tees Off New Pledge Campaign for People Living with Epilepsy 3Professional Golfer Jeff Klauk Tees Off New Pledge Campaign for People Living with Epilepsy 4Professional Golfer Jeff Klauk Tees Off New Pledge Campaign for People Living with Epilepsy 5Professional Golfer Jeff Klauk Tees Off New Pledge Campaign for People Living with Epilepsy 6Bioinformatics Market Worth $7.5 Billion by 2017 2Bioinformatics Market Worth $7.5 Billion by 2017 3Drug Advertising and Promotion Labeling: FDA Regulations, New Webinar Hosted by Xtalks 2John Northcott Joins Lexicon as Vice President of Marketing, Commercial Strategy and Operations 2John Northcott Joins Lexicon as Vice President of Marketing, Commercial Strategy and Operations 3
... U.S. HIV/AIDS Patients Live in States Now Providing ... Medicaid Coverage ... ,Monogram Biosciences, Inc. (Nasdaq: MGRM ) today announced that ... a diagnostic used to determine patient candidacy for Pfizer,s new,HIV ...
... or drop of liquid and the shape of the surface ... formula published this week in Physical Review Letters. , ... for a number of areas, including the chemical industry and ... explain how the relationship between the liquid and the surface ...
... in Europe ... expertise., BOSTON, April 7, 2008 The company is ... based in the United,Kingdom. Penny will work closely with US ... European and global,business. Penny specializes in the provision of actionable ...
Cached Biology Technology:New York Medicaid Program Establishes Coverage for Trofile(TM) 2New York Medicaid Program Establishes Coverage for Trofile(TM) 3New York Medicaid Program Establishes Coverage for Trofile(TM) 4Physicists saved from drowning in complexities of wetting theory 2Observant LLC Appoints Two New Directors to the Senior Management Team 2
... The MyCycler thermal cycler system is used ... This system includes the MyCycler personal thermal ... for use with 0.2 ml tubes or ... and both algorithm and block modes of ...
... arrays have been developed for affinity ... A variety of ProteinChip chemical surfaces ... to their unique biochemical properties. Each ... side-by-side sample comparison, and the chips ...
... Pro system with colony-picking capabilities, 110-120 V, ... DNA, proteins, oligonucleotides, carbohydrates, lipids, and other ... microarray applications. This system can also be ... 300 micrometers in diameter and for inoculating ...
Freeze 'N Squeeze DNA gel extraction spin columns use a quick freeze-and-thaw cycle and centrifugation to draw 50-23,000 bp DNA out of agarose gel slices. Supplied as 25 columns....
Biology Products: