Navigation Links
Significant role of oceans in onset of ancient global cooling
Date:5/26/2011

Thirty-eight million years ago, tropical jungles thrived in what are now the cornfields of the American Midwest and furry marsupials wandered temperate forests in what is now the frozen Antarctic.

The temperature differences of that era, known as the late Eocene, between the equator and Antarctica were half what they are today.

A debate has been ongoing in the scientific community about what changes in our global climate system led to such a major shift from the more tropical, greenhouse climate of the Eocene to modern and much cooler climates.

New research results published in this week's issue of the journal Science, led by Rensselaer Polytechnic Institute scientist Miriam Katz, are providing some of the strongest evidence to date that the Antarctic Circumpolar Current (ACC) played a key role in the shift.

"What we have found is that the evolution of the Antarctic Circumpolar Current influenced global ocean circulation much earlier than previous studies have shown," said Katz. "This finding is particularly significant because it places the impact of initial shallow ACC circulation in the same interval when the climate began its long-term shift to cooler temperatures."

There has been a debate over the past 40 years on what role the Antarctic Circumpolar Current had in the past cooling trend.

"These climate changes are one of the most significant shifts in Earth's history, from early Cenozoic 'greenhouse' climates to the mid- to late Cenozoic 'icehouse' that saw repeated massive glaciations of the polar regions," said Candace Major, program director in the National Science Foundation's (NSF) Division of Ocean Sciences.

The research was funded by NSF in partnership with the Integrated Ocean Drilling Program, and its predecessor programs, the Ocean Drilling Program and Deep Sea Drilling Project.

"The work by Katz and colleagues is the first to demonstrate that the basic structure of cu
'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Drug therapy shows significant benefit in treating a leading cause of childhood blindness
2. MedNet Solutions Announces Significant Enhancements to ENLIGHTEN, Its Flagship EDC / eClinical Solution
3. MedNet Solutions Announces Significant Enhancements to ENLIGHTEN, Its Flagship EDC / eClinical Solution
4. New study shows soy protein lowers non-HDL cholesterol significantly more than milk protein
5. Slight change in wind turbine speed significantly reduces bat mortality
6. Significant weight-loss from surgery decreases risk for cardiovascular disease in women
7. Fractures significantly reduce quality of life in women with osteoporosis
8. Online release of North American industrial pollution data reveals significant reporting gaps
9. Scientists identify seamounts as significant, unexplored territory
10. Significant findings about protein architecture may aid in drug design, generation of nanomaterials
11. New discovery is a significant boost to cancer research
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Significant role of oceans in onset of ancient global cooling
(Date:6/17/2015)... June 17, 2015  Crossmatch™, a leading provider ... its U.are.U ® 4500 fingerprint readers have ... Eateries, Inc., a San Jose, CA ... increase security, improve accountability and reduce fraud at ... non-repudiable identity confirmation for employee sign in and ...
(Date:6/15/2015)... June 16, 2015 According to ... by Type (Rule-Based, Statistical, and Hybrid), Technologies (Recognition, IVR, ... 2020" published by MarketsandMarkets, The Natural Language Processing Market ... CAGR of 18.4% for the forecast period 2015-2020. ... 46 F igures spread   through 155 P ...
(Date:6/10/2015)... , June 10, 2015 ... "3D Sensor Market by Technology (Ultrasound, TOF, Structured ... (consumer Electronics, Entertainment, Automotive) and by Geography - ... by MarketsandMarkets, the market is expected to reach ... of 25.51% between 2015 and 2020. ...
Breaking Biology News(10 mins):Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 2Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 3Natural Language Processing Market Worth $13.4 Billion by 2020 2Natural Language Processing Market Worth $13.4 Billion by 2020 3Natural Language Processing Market Worth $13.4 Billion by 2020 4Natural Language Processing Market Worth $13.4 Billion by 2020 53D Sensor Market Worth $3,319.71 Million by 2020 23D Sensor Market Worth $3,319.71 Million by 2020 33D Sensor Market Worth $3,319.71 Million by 2020 4
... A new NOAA report assesses the role National ... in U.S. waters. The report found the National ... role developing tools that allow the participation of numerous ... to protect habitat and biodiversity while minimizing user conflicts. ...
... summer of 2010 has been agonizingly hot in much of ... on global warming. Scientists have been looking at ways the ... heat, and one process had intrigued them, a premise that ... that could absorb carbon dioxide, one of the major compounds ...
... population centers, the city is the most vulnerable to ... who developed a new tool to estimate the frequency ... Geography doctoral student Jill C. Malmstadt, working with ... Jagger, created the Hurricane Risk Calculator and used it ...
Cached Biology News:NOAA report reviews ecosystem management in national marine sanctuaries 2Ice-free ocean may not absorb CO2, a component in global warming 2Ice-free ocean may not absorb CO2, a component in global warming 3Windy cities: Researchers invent new tool to calculate hurricane risk 2Windy cities: Researchers invent new tool to calculate hurricane risk 3
(Date:6/30/2015)... June 30, 2015 /PRNewswire/ - Resverlogix Corp. ("Resverlogix") ... shares of Resverlogix have approved the resolutions relating ... Limited of 5,600,000 units at a price of ... unit being comprised of one common share and ... of approximately CAD$15 million; and (ii) the amendment ...
(Date:6/30/2015)... , ... June 30, 2015 , ... ... Study will provide new insights on mechanics of fecal microbiota transplantation in C. ... to study the microbiome of patients undergoing fecal microbiota transplantation (FMT) as a ...
(Date:6/30/2015)... , June 30, 2015  The University of ... Biosciences (CCE/Bio) and UC San Diego Extension announced ... be held Aug.  12 – 14, 2015, at ... three-day workshop provides an intense exposure to best ... and is well-suited to biologists, process engineers and ...
(Date:6/30/2015)... (PRWEB) , ... June 30, 2015 , ... ... prior to launching SmartArch — a revolutionary new archwire that allows orthodontists to ... further clinical evidence of the efficacy of SmartArch. “We’re thrilled about taking SmartArch ...
Breaking Biology Technology:Resverlogix Corp. Shareholders Approve Matters Relating to Licensing and Equity Arrangement 2Resverlogix Corp. Shareholders Approve Matters Relating to Licensing and Equity Arrangement 3uBiome and OpenBiome Partner for Microbiome Study in FMT Patients 2uBiome and OpenBiome Partner for Microbiome Study in FMT Patients 3UC San Diego Extension to Offer Third Annual Microbial Fermentation Workshop 2New case studies for SmartArch orthodontic archwire paves way to product launch later this year 2
... May 4 Medivation, Inc. (Nasdaq: MDVN ) ... and webcast with management to discuss first quarter 2009 financial ... 11, 2009, at 4:30 p.m. Eastern Time. A press ... be released after markets close on May 11, 2009.Interested parties ...
... BioTech Inc. (OTC Bulletin Board: PLMO; Frankfort Borse: PLO) ... Officer of its Pulmo Science Inc. subsidiary and the ... paper at the 5th International Symposium on Peptide Receptors ... from June 26th to 29th. The paper, which ...
... Tectonics Corporation,s (NYSE AMEX LLC: ETC) ("ETC" or ... addition of Mr. Ray Wyngarden as Western Regional ... for expanding market awareness of the BARA-MED(R) XD ... in the western portion of the United States.Mr. ...
Cached Biology Technology:Medivation Announces First Quarter 2009 Financial Results Teleconference and Webcast on May 11, 2009 2Pulmo BioTech Inc. Announces Paper to be Presented at Symposium 2Pulmo BioTech Inc. Announces Paper to be Presented at Symposium 3Environmental Tectonics Corporation Expands BioMedical Systems Division Sales Staff 2Environmental Tectonics Corporation Expands BioMedical Systems Division Sales Staff 3
Narrow-mouth has heavy-duty rim. Approximate graduations are in durable white enamel. Extra large marking space. capacity 125 mL Special grade: student grade...
... Rabbit polyclonal to MSY2/YBOX2 ( ... Antigen: Synthetic ... amino acids 178-227 of human YBX2. ... sequence is proprietary). ...
Standard Fluka For microscopy (Bact., Hist.)...
... and Freedom EVO384R are fast multi-channel pipetting ... three different sizes, with a multi-channel head ... significant time saving, with true parallel processing ... of your assays with the Freedom EVOware ...
Biology Products: