Navigation Links
Wetlands likely source of methane from ancient warming event
Date:4/23/2009

nhouse effect equal to a tenfold increase in the amount of carbon dioxide in the atmosphere. For comparison, the warming trend observed in the last century has taken place with only a 30 percent increase of atmospheric carbon dioxide.

The research team, overseen by Scripps geoscientist and study co-author Jeff Severinghaus, collected what may be the largest ice samples ever for a climate change study. The researchers cut away 15 tons of ice from a site called Pakitsoq at the western margin of the Greenland ice sheet to collect the ancient air trapped within. Methane exists in low concentrations in this air and only a trillionth of any given amount contains the carbon-14 isotope that the researchers needed to perform the analysis. Levels of carbon-14, which has a half-life of 5,730 years, were too high in the methane to have come from clathrates, the researchers concluded.

"This study is important because it confirms that wetlands and moisture availability change dramatically along with abrupt climate change," said Severinghaus. "This highlights in a general way the fact that the largest impacts of future climate change may be on water resources and drought, rather than temperature per se."

The burst of methane took place immediately after an abrupt transition between climatic periods known as the Younger Dryas and Preboreal. During this event, temperatures in Greenland rose 10 C (18 F) in 20 years. Methane levels over 150 years rose about 50 percent, from 500 parts per billion in air to 750 parts per billion.

In addition to Petrenko and Severinghaus, researchers from the Australian Nuclear Science and Technology Organisation (ANSTO), Oregon State University, the National Institute of Water and Atmospheric Research in New Zealand, the Technical University of Denmark and the Commonwealth Scientific and Industrial Research Organisation in Australia contributed to the report.

The work was supported by grants from the Natio
'/>"/>

Contact: Robert Monroe or Mario Aguilera
scrippsnews@ucsd.edu
858-534-3624
University of California - San Diego
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Scientists find climate change to have paradoxical effects in coastal wetlands
2. Value of satellites recognized for conserving wetlands
3. Wetlands expert: China should think outside the flooding box with Three Gorges Dam
4. Study: Tropical wetlands hold more carbon than temperate marshes
5. Wetlands restoration not a panacea for Louisiana coast
6. Flooding might help lower gas emission from wetlands
7. Rising energy, food prices major threats to wetlands as farmers eye new areas for crops
8. Unlikely life thriving at Antarcticas Blood Falls
9. Cretaceous octopus with ink and suckers -- the worlds least likely fossils?
10. Mammals that hibernate or burrow less likely to go extinct
11. Dog owners more likely to share germs with pets by not washing hands than by sleeping with dog
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Wetlands likely source of methane from ancient warming event
(Date:4/15/2014)... associate professor of mechanical engineering at Worcester ... the university,s Integrative Materials Design Center (iMdc), ... from leading engineering societies. , At its ... global association of more than 138,000 engineers ... aerospace, and commercial vehicle industries, presented Lados ...
(Date:4/15/2014)... who study the deadliest infectious diseases recognized the contributions ... at the University of Texas Medical Branch, with a ... on Filoviruses. The filoviruses include Ebola and Marburg viruses ... people infected. The current outbreak of Ebola virus raging ... so far. , "This award represents the culmination ...
(Date:4/15/2014)... Md. (April 15, 2014) The American Association ... award winners. All awards will be presented during ... Diego Marriott Hotel on Tuesday, April 29th at 7:30 ... (EB). , The 2014 award winners are: ... Jeffrey Laitman, PhD, of the Icahn School of Medicine ...
Breaking Biology News(10 mins):WPI's Diana Lados honored by SAE International and Minerals, Metals, and Materials Society 2WPI's Diana Lados honored by SAE International and Minerals, Metals, and Materials Society 3WPI's Diana Lados honored by SAE International and Minerals, Metals, and Materials Society 4WPI's Diana Lados honored by SAE International and Minerals, Metals, and Materials Society 5International research group recognizes UTMB experts 2International research group recognizes UTMB experts 3American Association of Anatomists 2014 award winners 2
... in the Archives of General Psychiatry, researchers at the ... the first time molecular circuitry associated with schizophrenia that ... "This is very exciting because until now the many ... connected in any way," says Akira Sawa, M.D., Ph.D., ...
... color, their knobby knees or their big feet to their children ... through those same genes. New research from the University of ... herpes virus 6 (HHV-6) to their children because it is integrated ... been shown to become part of the human DNA and then ...
... and other hoofed animals, new research suggests that, when ... study, published today in the open access journal ... wolves will reduce deer hunting activity and instead focus ... Victoria and the Raincoast Conservation Foundation, Canada, led a ...
Cached Biology News:Hopkins researchers piece together gene 'network' linked to schizophrenia 2Hopkins researchers piece together gene 'network' linked to schizophrenia 3Virus weaves itself into the DNA transferred from parents to babies 2Wolves would rather eat salmon 2
(Date:1/15/2014)... 2014 The Microcompetition with Foreign DNA ... disease. One of these latent viruses is the Epstein ... rheumatoid arthritis (RA). Rheumatoid arthritis (RA) is a chronic ... by the theory, a study found that RA patients ... (1). , What is Microcompetition? , Dr. Hanan ...
(Date:1/15/2014)... Sunnyvale, CA (PRWEB) January 15, 2014 ... of high throughput research solutions, today announced that ... companies, has received delivery of Freeslate’s CM ... form screening. , Lupin, headquartered in Mumbai, ... quality, affordable generic and branded formulations and Active ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 Date: Friday, ... p.m. , Location: Warrington Country Club, 1360 Almshouse Road, ... Foundation, the only national nonprofit organization solely dedicated to ... quality of life for those affected worldwide, will host ... Warrington Country Club in Warrington, Pa. , Each ...
(Date:1/14/2014)... , Jan. 14, 2014  3D Communications, a leading provider ... major scientific, regulatory, business, and media events in ... , today announced its former associate Virginia Cox , ... office. Virginia Cox re-joins ... Commissioner for the Office of External Affairs at the U.S. ...
Breaking Biology Technology:Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Hepatitis B Foundation to Host Annual Crystal Ball Gala 2Former FDA Associate Commissioner Returns To 3D Communications 2
... Inc.,(Nasdaq: NVAX ) and the ... a preclinical study of a Respiratory Syncytial Virus ... rights from the, University of Massachusetts Medical School ... of Paramyxovirus vaccines incorporating,certain Virus-Like-Particles ("VLPs"). This ...
... announced as the recipient of a $750,000 investment by the Michigan ... ... Wire EON) December 9, 2008 -- Invest Michigan!, a program ... one of only two companies to receive capital in its first ...
... Dec. 9 First Coast Service Options (FCSO) has ... reimbursement solutions, to support a new Medicare contract awarded ... (CMS). , , Under ... Jan. 1, 2009 between health care providers and organizations ...
Cached Biology Technology:NOVAVAX and the University of Massachusetts Medical School Announce Preclinical Study Results for a Respiratory Syncytial Virus ('RSV') Vaccine Candidate 2NOVAVAX and the University of Massachusetts Medical School Announce Preclinical Study Results for a Respiratory Syncytial Virus ('RSV') Vaccine Candidate 3NOVAVAX and the University of Massachusetts Medical School Announce Preclinical Study Results for a Respiratory Syncytial Virus ('RSV') Vaccine Candidate 4 EcoSphere(R) Biolatex(TM) Secures Funding from Granholm and Invest Michigan! 2FCSO Selects Burgess as Exclusive Pricing Solution for New Medicare Contract 2
... Agencourt offers quick turnaround sequencing of ... copy and high copy plasmids. Agencourt's world-class, ... million Phred20 bases per day. The ... Sequencing service are 24 48 hour ...
Great for biotinylating DNA/RNA probes...
...
...
Biology Products: