Navigation Links
Rising CO2 levels at end of Ice Age not tied to Pacific Ocean
Date:10/3/2011

CORVALLIS, Ore. At the end of the last Ice Age, atmospheric carbon dioxide levels rose rapidly as the planet warmed; scientists have long hypothesized that the source was CO2 released from the deep ocean.

But a new study using detailed radiocarbon dating of foraminifera found in a sediment core from the Gorda Ridge off Oregon reveals that the Northeast Pacific was not an important reservoir of carbon during glacial times. The finding may send scientists back to the proverbial drawing board looking for other potential sources of CO2 during glacial periods.

The study, which was supported by the National Science Foundation and the University of Michigan, was published online this week in Nature Geoscience.

"Frankly, we're kind of baffled by the whole thing," said Alan Mix, a professor of oceanography at Oregon State University and an author on the study. "The deep North Pacific was such an obvious source for the carbon, but it just doesn't match up. At least we've shown where the carbon wasn't; now we just have to find out where it was."

During times of glaciation, global climate was cooler and atmospheric CO2 was lower. Humans didn't cause that CO2 change, so it implies that the carbon was absorbed by another reservoir. One obvious place to look for the missing carbon is the ocean, where more than 90 percent of the Earth's readily exchangeable carbon is stored.

The Pacific Ocean is the largest ocean by volume. The deep water mass longest isolated from the atmosphere and most enriched in carbon is found today in the Northeast Pacific, so the researchers focused their efforts there. They hypothesized that the ventilation age in this basin or the amount of time since deep water was last in contact with the atmosphere would be older during glacial times, allowing CO2 to accumulate in the abyss.

"We were surprised to find that during the last ice age,
'/>"/>

Contact: Alan Mix
alan.mix@oregonstate.edu
541-737-5212
Oregon State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Emissions rising faster this decade than last
2. Research uncovers surprising lion stronghold in war-torn central Africa
3. Rising sea levels set to have major impacts around the world
4. Carbon sinks losing the battle with rising emissions
5. Study finds homicidal poisoning rising, more likely in infants and elderly
6. Ernst-Ludwig Winnacker awarded the Order of the Rising Sun
7. Rising acidity levels could trigger shellfish revenue declines, job losses
8. Ozone, nitrogen change the way rising CO2 affects Earths water
9. New report shows rising tide of fractures in Asia
10. Amid rising concerns, 600 global biodiversity experts meet in Cape Town Oct. 13-16
11. The sea level has been rising and falling over the last 2,500 years
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/10/2015)... and TELTOW, Germany , August 10, ... (SMI), a world leader in Eye Tracking Technology for ... its OEM Eye Tracking Platform for integration into all ... contains reference designs for seamless integration of eye tracking ... reality HMDs and augmented reality smart glasses. Omnivision,s leading ...
(Date:8/6/2015)... Germany , August 6, 2015 ... Instruments (SMI) shows the world,s first Eye ... on Epson,s Moverio BT-200 see-through head mounted display and ... solution, unprecedented quality and efficiency is brought to personalized ... For the first time, professionals and researchers can integrate ...
(Date:8/5/2015)... ALBANY, New York , August 5, 2015 /PRNewswire/ ... new market report titled "Facial Recognition Market - Global ... - 2022", the global market for facial recognition is ... market is driven by increased demand for surveillance systems ... to the rising number of crimes and terrorist activities ...
Breaking Biology News(10 mins):SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 2SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 3SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 2SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 3Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 2Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 3Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 4Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 5Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 6
... 2009 A recent study by Scripps Research Institute scientists ... rare genetic disorder, cystinosis. In research that holds out hope ... fatal disorder, the study shows that the genetic defect in ... "After meeting the children who suffer from this disease, like ...
... 09/17/09) NRL,s Marine Meteorology Division has deployed ... (MAARCO) to the National University of Singapore to ... in the Maritime Continent region. NRL is leading ... infer larger aerosol and visibility features from limited ...
... WASHINGTON -- A report released today by the ... launch a new multiagency, multiyear, and multidisciplinary initiative to ... and to accelerate new breakthroughs that could solve some ... areas of food, environment, energy, and health. ...
Cached Biology News:Rare genetic disease successfully reversed using stem cell transplantation 2Rare genetic disease successfully reversed using stem cell transplantation 3NRL begins Southeast Asia study of aerosols linked to global warming 2NRL begins Southeast Asia study of aerosols linked to global warming 3National new biology initiative offers potential for 'remarkable and far-reaching benefits' 2National new biology initiative offers potential for 'remarkable and far-reaching benefits' 3
(Date:8/26/2015)... ... August 26, 2015 , ... Lee ... in the development and manufacture of highly valued cardiac markers used in early ... extensive expertise with protein chemistry has led to the development and commercialization of ...
(Date:8/26/2015)... 2015 Intrexon Corporation (NYSE: XON ), ... of its previously announced public offering of common stock, ... their option to purchase an additional 731,707 shares of ... per share.  The exercise of the underwriters, option brought ... by Intrexon to 5,609,756 shares and increased the total ...
(Date:8/26/2015)... , August 26, 2015 After litigating ... Europlasma NV relating to P2i United States ... their dispute in the United States ... the part of either party. As a result of the ... of California dismissed the case without ...
(Date:8/26/2015)... , ... August 26, 2015 , ... The 2015 Epigenomics ... adult stem cell technology start-up company Asymmetrex to share the first report ... of a new biomarker for counting adult tissue stem cells. , With a name ...
Breaking Biology Technology:Lee Biosolutions Announces Increased Investment in the Development and Manufacturing of Biomarkers Used in Early Detection Of Heart Disease 2Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 2Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 3Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 4P2i Settles United States Litigation 2Asymmetrex Reports Positive Indicators for Crowdsourcing Campaign to Evaluate New Biomarker for Counting Adult Tissue Stem Cells for the First Time 2Asymmetrex Reports Positive Indicators for Crowdsourcing Campaign to Evaluate New Biomarker for Counting Adult Tissue Stem Cells for the First Time 3Asymmetrex Reports Positive Indicators for Crowdsourcing Campaign to Evaluate New Biomarker for Counting Adult Tissue Stem Cells for the First Time 4
... Spectrometry Application Report , Key Words Sensitivity ... Gargi Choudhary, Thermo Electron Corporation, San Jose, ... Wayne Skinner and Scott Stanley, University of California, Davis , ... Acepromazine is widely used as a sedative in horses. It serves as a ...
... Dirk Chelius, Terry Zhang, and Ken Miller; , ... Key Words Sensitivity Proteomics Finnigan LCQ ... LC/MS/MS , Introduction , ... been pushed downward to levels no one would have thought possible only a ...
... Gargi Choudhary, Tania A. Sasaki, and Julian J. Phillips, ... Chromatography and Mass Spectrometry Application Report ... Ion trap mass spectrometry is widely ... such as for structural elucidation and identification of unknowns in complex ...
Cached Biology Technology:Determination of Acepromazine and its Major Metabolite in Equine Serum by LC-MS/MS using the Finnigan LCQ Deca XP Plus Ion Trap Mass Spectrometer 2Determination of Acepromazine and its Major Metabolite in Equine Serum by LC-MS/MS using the Finnigan LCQ Deca XP Plus Ion Trap Mass Spectrometer 3Determination of Acepromazine and its Major Metabolite in Equine Serum by LC-MS/MS using the Finnigan LCQ Deca XP Plus Ion Trap Mass Spectrometer 4Fully Automated Nano-Electrospray Coupled with a Finnigan LCQ Deca XP Plus for Sub-fmol Proteomic Analysis 2Fully Automated Nano-Electrospray Coupled with a Finnigan LCQ Deca XP Plus for Sub-fmol Proteomic Analysis 3Fully Automated Nano-Electrospray Coupled with a Finnigan LCQ Deca XP Plus for Sub-fmol Proteomic Analysis 4Fully Automated Nano-Electrospray Coupled with a Finnigan LCQ Deca XP Plus for Sub-fmol Proteomic Analysis 5Sensitivity and Quantitation using a Finnigan LCQ Deca XP Plus Ion Trap Mass Spectrometer 2Sensitivity and Quantitation using a Finnigan LCQ Deca XP Plus Ion Trap Mass Spectrometer 3
... HybriCycler Hybridization Oven with circular clear acrylic ... tubes. HC-3000 HybriCycler Oven features microprocessor operation ... feet balance the unit., Carousel rotates ... carousel is ,easily removable , Bottle ...
... The KingFisher magnetic particle based purification ... and DNA/RNA from any sample. They offer ... family comprises three systems- KingFisher, KingFisher mL ... 20 - 1000 l. Each system consists ...
... is specifically engineered for efficient drying down ... a glass cover and a post-trap with ... odor-free processing of samples in ammonium hydroxide., ... Oligos , Comes ...
... Thermo Savant SpeedVac™ Concentrators set the standard ... series SC210A SpeedVac with large chamber uses a ... dry multiple samples in a single run. , ... Rotor Chamber for long lasting chemical compatibility ...
Biology Products: