Navigation Links
Journal highlights Arctic sea ice study by UM professor
Date:7/10/2013

New research by UM bioclimatology Assistant Professor Ashley Ballantyne models the influence of Arctic sea ice on Arctic temperatures during the Pliocene era. His research was published in the Research Highlight section of the July issue of Nature Geoscience. The full paper will be published in Palaeogeography, Palaeoclimatology, Palaeoecology: An International Journal for the Geosciences.

Ballantyne and coauthors from Northwestern University, the University of Colorado and the National Center for Atmospheric Research used a global climate model to investigate the amplification of Arctic temperatures in Earth's past.

Atmospheric carbon dioxide concentrations recently reached 400 parts per million for the first time since the Pilocene Epoch, three million years ago. During this era, Arctic surface temperatures were 15-20 degrees Celsius warmer than today's surface temperatures.

Ballantyne's findings suggest that much of the surface warming likely was due to ice-free conditions in the Arctic. That finding matches estimates of land temperatures in the Arctic during the same time. This suggests that atmospheric carbon dioxide concentrations of 400 ppm may be sufficient to greatly reduce the spatial extent and seasonal persistence of Arctic sea ice.

The authors also found that surface temperatures in the Arctic are more sensitive to the amount of sea ice than to the amount of land-based ice. They show that once sea ice is removed, heat lost from the ocean recirculates in the atmosphere and warms the interior land.

The findings are relevant to modern-day atmospheric models and to an understanding of what a loss of sea ice means to both sea and land temperatures.

According to the findings, the extent of Arctic sea ice and its seasonal distribution clearly have broad impacts on Arctic climate that extend beyond the Arctic Ocean itself and have important implications for the future of the Arctic system.


'/>"/>

Contact: Ashley Ballantyne
ashley.ballantyne@umontana.edu
760-846-1391
The University of Montana
Source:Eurekalert

Page: 1

Related biology news :

1. Elsevier launches open access journal: GeoResJ
2. Elsevier launches new open access journal: Translational Proteomics
3. Frontiers launches new open-access journal in physics
4. Frontiers launches new open-access journal in Bioengineering and Biotechnology
5. New ACS journal Environmental Science and Technology Letters to rapidly publish urgent research
6. GSAs top geoscience journal posts 9 new articles
7. Genetics Society of Americas GENETICS journal highlights for May 2013
8. New evidence shows PubMed Central undermines journal usage
9. Genetics Society of Americas Genetics journal highlights for April 2013
10. NRC Research Press adds a new title to collection of scientific and technical journals
11. AGU journal highlights -- Mar. 26, 2013
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/12/2016)... WearablesResearch.com , a brand of Troubadour Research & ... Q1 wave of its quarterly wearables survey. A particular ... a program where they would receive discounts for sharing ... "We were surprised to see that so many ... CEO of Troubadour Research, "primarily because there are segments ...
(Date:4/26/2016)... and LONDON , ... Finacle, part of EdgeVerve Systems, a product subsidiary ... Onegini today announced a partnership to integrate the ...      (Logo: http://photos.prnewswire.com/prnh/20151104/283829LOGO ) ... provide their customers enhanced security to access and ...
(Date:4/14/2016)... , April 14, 2016 ... Malware Detection, today announced the appointment of Eyal ... new role. Goldwerger,s leadership appointment comes at ... heels of the deployment of its platform at several ... biometric technology, which discerns unique cognitive and physiological factors, ...
Breaking Biology News(10 mins):
(Date:5/25/2016)... ... May 25, 2016 , ... The American Medical Informatics ... of the National Coordinator for Health IT (ONC) outlining a measurement approach to ... were available when and where it was needed. The organization of health informatics ...
(Date:5/24/2016)... ... May 24, 2016 , ... ... and traumatic injuries, will be accelerated by research at Worcester Polytechnic Institute (WPI) ... of wound healing and tissue regeneration. , The novel method, developed by WPI ...
(Date:5/23/2016)... ... May 23, 2016 , ... PrecisionAg® Media has released ... and Beyond. The paper outlines the key trends that are creating both opportunities ... witnessed a lot of highs and lows as the precision agriculture market has ...
(Date:5/23/2016)... ... May 23, 2016 , ... ... on molecular nanotechnology, announced the winners for the 2015 Foresight Institute Feynman Prizes. ... are given in two categories, one for experiment and the other for theory ...
Breaking Biology Technology: