Navigation Links
Has the mystery of the Antarctic ice sheet been solved?
Date:2/27/2008

A team of scientists from Cardiff Universitys School of Earth and Ocean Sciences and Amgueddfa Cymru - National Museum Wales travelled to Africa to find new evidence of climate change which helps explain some of the mystery surrounding the appearance of the Antarctic ice sheet.

Ice sheet formation in the Antarctic is one of the most important climatic shifts in Earths history. However, previous temperature records show no evidence of the oceans cooling at this time, but instead suggest they actually warmed, presenting a confusing picture of the climate system which has long been a mystery in palaeoclimatology.

Now Dr Carrie Lear, Lecturer in Palaeoceanography, and her team at Cardiff have presented new temperature records using ancient sea floor mud recovered from Tanzania, East Africa. The shell chemistry of pin-head sized animals called foraminifera (forams) reveal that ocean temperatures did in fact cool by about 2.50C.

Dr Lear said: Forams are great tools for studying climates of the past, which helps us learn about the uncertainties of our future greenhouse climate. These new records help resolve a long-standing puzzle regarding the extent of ice-sheet growth versus global cooling, and bring climate proxy records into line with climate model simulations.

We have been able to use the chemistry of the Tanzanian microfossils to construct records of temperature and ice volume over the interval of the big climate switch. These new records show that the worlds oceans did cool during the growth of an ice sheet, and that the volume of ice would have fitted onto Antarctica; so now the computer models of climate and the past climate data match up.

The team at Cardiff Universitys School of Earth, Ocean and Planetary Sciences will now look for evidence of the ultimate cause of the global cooling using the forams. They believe the prime suspect is a gradual reduction of CO2 in the atmosphere, combined with a trigger
'/>"/>

Contact: Dr. Carrie Lear
carrie@earth.cf.ac.uk
029-208-79004
Cardiff University
Source:Eurekalert

Page: 1 2

Related biology news :

1. UCLA researchers solve decade-old mystery
2. Ancient mystery solved
3. ASU professor helps solve mystery of glassy water
4. 480-million-year-old fossil sheds light on 150-year-old paleontological mystery
5. Time-sharing tropical birds key to evolutionary mystery
6. Cassini on the trail of a runaway mystery
7. Magnetic snakes control fluids, gravity-defying droplets, and solving a dragonfly mystery
8. Men shed light on the mystery of human longevity, study finds
9. Folate mystery finally solved
10. Scientists tackle mystery mountain illness
11. Krill discovered living in the Antarctic abyss
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/9/2015)... , July 9, 2015  Unchained Labs just ... its acquisition of Avid Nano. Avid Nano designs, ... (DLS) systems.    Also today, Unchained ... and easiest to use protein sizing system. The ... a protein,s hydrodynamic size, size distribution, aggregation population ...
(Date:7/8/2015)... YORK , July 8, 2015 Summary ... globally, and the fourth most fatal, with a mortality ... The poor prognosis of pancreatic cancer patients has highlighted ... treatment, which is not being met by the current ... an array of products with varying molecule types and ...
(Date:7/8/2015)... July 8, 2015  Trovagene, Inc. (NASDAQ: ... today announced the launch of a study that ... Cancer Monitoring℠ (PCM) technology for predicting response to ... a combination of the novel immunotherapy agents Yervoy® ... PD-1 inhibitor. The 50-patient study will be led ...
Breaking Biology News(10 mins):Unchained Labs just can't get enough, acquires Avid Nano, rocks out the new pUNk! 2Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 2Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 3Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 2Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 3Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 4
... Pennsylvania School of Veterinary Medicine have discovered a unique evolutionary ... the form of a primitive version of B cells, white ... the evolution of the adaptive immune system in mammals, where ... primitive innate immunity in fish, where they found that B ...
... U.S. Department of Agriculture; and the University of Haifa in ... the protein, zinc and iron content in the grain, potentially ... of children around the world. , Results from the study ... journal Science. , "Wheat is one of the world's ...
... whose first pictures made the cover of Nature in ... it now appears, they may have been. , This ... evidence for reinterpreting the 600 million-year-old fossils from the ... "complicates our understanding of microfossils thought to be the ...
Cached Biology News:'Killer' B cells demonstrate evolutionary link between fish and mammal immune systems 2'Killer' B cells demonstrate evolutionary link between fish and mammal immune systems 3Wheat gene may boost foods' nutrient content 2Oldest animal fossils may have been bacteria 2
(Date:7/31/2015)... ... July 31, 2015 , ... R-Biopharm ... quantification of partially hydrolyzed gluten in foods, has been accepted by AOAC International ... “Partially Hydrolyzed Gluten in Fermented Cereal-Based Products by R5 Competitive ELISA,” based on ...
(Date:7/30/2015)... Texas (PRWEB) , ... July 30, 2015 , ... The ... and in-depth study on the current state of the global Propanol market with a ... Sinopec, CNPC, BASF, Eastman, Dow, Carboclor, Mitsui Chemicals, Oxea, ISU Chemical, Sanofi, Royal Dutch ...
(Date:7/30/2015)... ISN improves the efficiency and effectiveness of contractor management systems. ISN,s online contractor management platform, ... 80 countries. ... ... Over 60,000 Worldwide Customers In More Than 80 Countries ... Dallas, TX , ISN has additional offices in Calgary , ...
(Date:7/30/2015)... ... July 30, 2015 , ... GEA's Pony™ NS2006L ... continuous operation up to 1500 bar. The sanitary design gauge of the NS2006L ... contamination. , The Pony™ NS2006L homogenizer is an ideal solution for the processing ...
Breaking Biology Technology:RIDASCREEN® Competitve Gliadin Receives AOAC Official First Action Status 2Global Propanol Market Technical Data and Manufacturing Analysis 2020 2Global Propanol Market Technical Data and Manufacturing Analysis 2020 3ISN Reaches Over 60,000 Worldwide Customers 2ISN Reaches Over 60,000 Worldwide Customers 3GEA Announces the Pony™ NS2006L… a Self-contained, High Pressure Lab Homogenizer for Product Development Ensuring Maximum Efficiency and Safety 2
... ST. LOUIS, Aug. 18 Sigma-Aldrich® Corporation (Nasdaq: ... Borg has been named Vice President and Chief Information ... Borg will lead the Company,s global information systems function ... Chief Financial Officer and Chief Administrative Officer. ...
... SHENYANG, China, Aug. 17 /PRNewswire-Asia-FirstCall/ -- ... ... var shortURL ... by longUrl, so we need to grab the first one. for (var r in data.results) { ...
... ProAmatine -- PHILADELPHIA, Pennsylvania, August 17, 2010 ... ... var shortURL = ""; BitlyCB.alertResponse ... need to grab the first one. for (var r in data.results) { first_result = data.results[r]; break; } ...
Cached Biology Technology:Sigma-Aldrich Announces Appointment of Magnus Borg as Vice President and Chief Information Officer (CIO) 23SBio Inc. Announces Unaudited Second Quarter Results 23SBio Inc. Announces Unaudited Second Quarter Results 33SBio Inc. Announces Unaudited Second Quarter Results 43SBio Inc. Announces Unaudited Second Quarter Results 53SBio Inc. Announces Unaudited Second Quarter Results 63SBio Inc. Announces Unaudited Second Quarter Results 73SBio Inc. Announces Unaudited Second Quarter Results 83SBio Inc. Announces Unaudited Second Quarter Results 93SBio Inc. Announces Unaudited Second Quarter Results 103SBio Inc. Announces Unaudited Second Quarter Results 113SBio Inc. Announces Unaudited Second Quarter Results 123SBio Inc. Announces Unaudited Second Quarter Results 133SBio Inc. Announces Unaudited Second Quarter Results 143SBio Inc. Announces Unaudited Second Quarter Results 153SBio Inc. Announces Unaudited Second Quarter Results 163SBio Inc. Announces Unaudited Second Quarter Results 173SBio Inc. Announces Unaudited Second Quarter Results 183SBio Inc. Announces Unaudited Second Quarter Results 19Shire plc - Statement re ProAmatine 2Shire plc - Statement re ProAmatine 3Shire plc - Statement re ProAmatine 4Shire plc - Statement re ProAmatine 5Shire plc - Statement re ProAmatine 6
Human/Mouse APLP-1 MAb (Clone 354020) ENTREZ GeneID: 333...
Mouse monoclonal [4i97] to HLA Class 1 A25 ( Abpromise for all tested applications). Antigen: Full length protein (Human): HLA Class 1 Antigen-A25. Swiss Protein ID: P18462...
... choice of Printing Surface (3 glass slides coated with ... 1 silicon wafer coated with 1000 Angstroms of Gold ... and PDMS Stamps (3 PDMS micropatterned stamps with series ... x 10 mm or 200 um x 10 mm ...
Human Dectin-1/CLEC7A Biotinylated Affinity Purified PAb...
Biology Products: