Navigation Links
Antarctic ice core contains unrivaled detail of past climate
Date:2/5/2013

A team of U.S. ice-coring scientists and engineers in Antarctica, funded by the National Science Foundation (NSF), have recovered from the ice sheet a record of past climate and greenhouse gases in the atmosphere that extends back 68,000 years.

Retrieved from the West Antarctic Ice Sheet (WAIS), the ice containing the record is known as the WAIS Divide ice core. The cylinders of ice that make up the core contain uniquely detailed information on past environmental conditions such as the atmospheric concentration of greenhouse gases, surface air temperature, wind patterns, the extent of sea ice around Antarctica, and the average temperature of the ocean.

Successfully retrieving the core is the culmination of an eight-year project to obtain a paleoclimate record from one of the remotest parts of the continent.

The ice containing the record was recovered at a field camp in the center of West Antarctica, 1,040 kilometers (650 miles) from the geographic South Pole, where the ice is more than 3,460 meters (two miles) thick. In the new WAIS Divide core each of the past 30,000 years of snowfall can be identified in individual layers of ice. By allowing an examination of past climate at an annual resolution, the record will help scientists understand why climate can change abruptly--in less than 10 years--and how climate could unfold in the coming century.

Other ice-coring projects have produced cores of lower temporal resolution, showing that the current level of atmospheric greenhouse gases, which is due to the burning of fossil fuels, is the highest in at least 800,000 years.The ice that is between 30,000 and 68,000 years old--while not containing records with annual resolution--contains a higher time resolution record than previous projects.

When snow falls at WAIS Divide, it rarely melts, but builds up in thick annual layers, which are compressed into ice by subsequent snowfall. Chemicals and gases in the atmosphere that
'/>"/>

Contact: Peter West
pwest@nsf.gov
703-292-7530
National Science Foundation
Source:Eurekalert  

0

GOOD

Page: 1 2 3

Related biology news :

1. US, New Zealand search-and-rescue teams recalled from Antarctic plane crash site
2. NSF-funded team samples Antarctic lake beneath the ice sheet
3. New Antarctic geological timeline aids future sea-level predictions
4. Finding life in the volcanic systems of the Antarctic Polar Front
5. Ancient microbes found living beneath the icy surface of Antarctic lake
6. UIC scientists find ancient microbes in salty, ice-sealed Antarctic lake
7. Hearty organisms discovered in bitter-cold Antarctic brine
8. British team set to embark on ambitious Antarctic mission to penetrate and sample ancient buried lake
9. British team set to embark on ambitious Antarctic mission to penetrate & sample ancient buried lake
10. EARTH: Antarctic trees surprise scientists
11. Professors Antarctica research shows potential king crab invasion
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Antarctic ice core contains unrivaled detail of past climate
(Date:5/17/2013)... insects provide the white noise of the South, but the ... the Southern air hangs heavy from the humidity and the ... than 140 species of frogs, toads and salamanders, is the ... ponds and swamps are the auditorium for their symphonic choruses, ... Monitoring Initiative, or ARMI, have front-row seats. , ...
(Date:5/17/2013)... residents of all ages will celebrate the science ... on our daily lives during the inaugural Atlanta ... and educators from local museums, corporations, K-12 schools ... 40 different events for children and adults at ... http://atlantasciencefestival.org . , The annual Atlanta Science ...
(Date:5/17/2013)... Why Tibetan antelope can live at elevations of ... research published in Nature Communications , investigators ... evidence that some genetic factors may be associated ... The data in this work will also provide ... biology of other ruminant species. , The Tibetan ...
Breaking Biology News(10 mins):Front-row seats to climate change 2Front-row seats to climate change 3Front-row seats to climate change 4First Atlanta Science Festival set for 2014 2The genome sequence of Tibetan antelope sheds new light on high-altitude adaptation 2
... undergo polar body diagnosis go on to have a child. ... by researchers in reproductive medicine at Lbeck in an article ... in which they present three successful cases and one failure ... are by-products of normal cell division (meiosis) of an oocytea ...
... of the Americasmight be forgiven for thinking that all ... among dense forest understory are butterflies. In fact, many ... as butterflies, converging on the daytime niche typically dominated ... of the taxonomic relationships among one such group of ...
... usefulness in counting copies of duplicated genome sequences and in ... to be published Aug. 30 in Nature Genetics . ... from one person to the next. The researchers named ... Tool. The study is titled, "Personalized Copy Number and Segmental ...
Cached Biology News:New developments in reproductive medicine 2Moths cloaked in color 2Moths cloaked in color 3Moths cloaked in color 4Counting duplicated genome segments now possible 2Counting duplicated genome segments now possible 3
(Date:5/16/2013)... The Stirling Ultracold Model SU780U ultra-low ... USA, won the Outstanding New Product Award presented on ... and Environmental Repositories (ISBER) at their annual meeting in ... recognizes the company’s development and introduction of the world’s ... was presented to Global Cooling’s CEO Neill Lane by ...
(Date:5/16/2013)... May 16, 2013 A new ... models, from Cole-Parmer is designed to meet the ... includes: , The new Cole-Parmer® MS-3400 Centrifuges ... in the lab. They ensure a powerful and ... specimen separation. Their standard four-place swinging buckets hold ...
(Date:5/16/2013)... 2013  The registration deadline has been extended until ... 2013 National Conference, the premier conference for bioscience financial ... the Hilton San Diego Bayfront. "We ... and want to make sure as many people as ... Brandi Roberts , Chief Financial Officer of Mast ...
(Date:5/16/2013)... YORK , May 16, 2013 ... new market research report is available ... Competitor Analysis: Therapeutic ... http://www.reportlinker.com/p01171947/Competitor-Analysis-Therapeutic-Proteins-–-Biosimilars-Biobetters--Biosuperiors.html#utm_source=prnewswire&utm_medium=pr&utm_campaign=Biopharmaceutical ...   The new ...
Breaking Biology Technology:Stirling Ultracold Ultra-Low Freezer Wins 2013 Outstanding New Product Award at International Biorepository Conference, Sydney, Australia 2Cole-Parmer Offers Enhanced Selection of Centrifuges 2Registration Extended Until May 22 for Association of Bioscience Financial Officers (ABFO) 2013 National Conference -- San Diego 2Registration Extended Until May 22 for Association of Bioscience Financial Officers (ABFO) 2013 National Conference -- San Diego 3Registration Extended Until May 22 for Association of Bioscience Financial Officers (ABFO) 2013 National Conference -- San Diego 4Competitor Analysis: Therapeutic Proteins - Biosimilars, Biobetters & Biosuperiors 2Competitor Analysis: Therapeutic Proteins - Biosimilars, Biobetters & Biosuperiors 3Competitor Analysis: Therapeutic Proteins - Biosimilars, Biobetters & Biosuperiors 4Competitor Analysis: Therapeutic Proteins - Biosimilars, Biobetters & Biosuperiors 5Competitor Analysis: Therapeutic Proteins - Biosimilars, Biobetters & Biosuperiors 6Competitor Analysis: Therapeutic Proteins - Biosimilars, Biobetters & Biosuperiors 7Competitor Analysis: Therapeutic Proteins - Biosimilars, Biobetters & Biosuperiors 8
... Ltd. (NYSE Amex:, SVA ), a leading developer and provider of ... and twelve month,periods ended December 31, 2008. , , ... 2008 sales increasing 39% year-over-year to $46.5, ... in 2008, up from 5.12 million in, ...
... Biotech Ltd. (NYSE Amex:, SVA ), a leading developer and provider ... three and twelve month,periods ended December 31, 2008. , , ... year 2008 sales increasing 39% year-over-year to $46.5, ... Healive(R) in 2008, up from 5.12 million in, ...
... CPHD ) today announced that it will report ... 2009, on Thursday, April 23, 2009, after the close of ... p.m. Pacific Time on Thursday, April 23, 2009, to discuss ... Cepheid,s website at www.cepheid.com/investors at least ...
Cached Biology Technology:Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 2Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 3Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 4Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 5Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 6Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 7Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 8Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 9Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 10Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 11Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 12Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 13Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 14Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 15Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 16Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 17Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results with Financial Tables 18Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 2Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 3Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 4Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 5Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 6Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 7Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 8Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 9Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 10Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 11Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 12Sinovac Reports Unaudited Full Year 2008 and Fourth Quarter Financial Results 13Cepheid Schedules Fiscal 2009 First Quarter Financial Results Announcement and Webcast 2