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:1/22/2016)... http://www.researchandmarkets.com/research/p74whf/global_biometrics ) ... "Global Biometrics Market in Retail Sector 2016-2020" ... --> http://www.researchandmarkets.com/research/p74whf/global_biometrics ) has announced the ... in Retail Sector 2016-2020" report to ... and Markets ( http://www.researchandmarkets.com/research/p74whf/global_biometrics ) has announced ...
(Date:1/18/2016)... SAN JOSE, Calif. , Jan. 18, 2016 ... storage security software that simplifies the use and ... a technology and go-to-market partnership with American Cyber.  ... "American Cyber brings extensive experience leading transformational C4ISR ... missions implementing and integrating the latest proven technology ...
(Date:1/11/2016)... 11, 2016  higi, the leading retail and ... locations, web and mobile, today announced it has ... existing investors. --> ... further innovate higi,s health platform – its network ... – including expanding services and programs to retail ...
Breaking Biology News(10 mins):
(Date:2/4/2016)... ... February 04, 2016 , ... ... Digital Forensics Club, takes place February 5-6 at the University’s student center, ... and activities such as workshops and competitions for ample networking, learning and ...
(Date:2/4/2016)... and MENLO PARK, Calif. , Feb. ... ("DelMar" and the "Company"), a biopharmaceutical company focused on the ... it will present at the 18 th Annual ... 2016 at 10:00 a.m. EST in New York, ... president and CEO, will provide an update on the ongoing ...
(Date:2/4/2016)... BETHESDA, Md. , Feb. 4, 2016  Spherix ... committed to the fostering and monetization of intellectual property, ... VTech and Uniden in the Northern District of ... are moving forward.  Inter Partes ... the U.S. Patent Office.  The IPR was initiated on ...
(Date:2/4/2016)... Strasbourg, France , to ... Strasbourg, France , to the US company ... pleased to announce that it acted as an advisor to ... Strasbourg, France , to the US company ... --> Transgene (Euronext: TNG), a member of Institut ...
Breaking Biology Technology: