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:12/17/2014)... NEW YORK , Dec. 15, 2014 /PRNewswire-USNewswire/ ... a Good Clinical Practices (GCP) audit to confirm ... Administration (FDA) regulations. This accomplishment enables HITLAB to ... trials utilizing the highest principles for patient safety ... to improve global healthcare access, quality, and delivery ...
(Date:12/11/2014)... 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced the addition ... Region 2015-2019"  report to their offering. ... is advances in technology. With continuous advances in ... to the latest standard that meets the needs ...
(Date:12/10/2014)... -- Valencell, a leader in performance biometric data sensor technology, ... its licensees for highly accurate, clinically validated biometric technology. ... from fitness and health sectors, but first responders/military and ... only as useful as the biometric data it delivers. ... long-term mass consumer adoption of wearable products," said Dr. ...
Breaking Biology News(10 mins):HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wearable Technology Products Demand Highly Accurate Biometric Technology 2
... are you won,t know you,ve got a staph infection until ... appear. But what if your physician could identify the infection ... and ship it off for analysis? Researchers at the ... has created a noninvasive chemical probe that detects a common ...
... conserve one of Earth,s ecological treasures, The New York ... improve the management and sustainable use of the Brazilian ... forest in the world. In collaboration with scientific ... Botanical Garden is committing its expertise in plant science ...
... adults who care for an animal may have stronger social ... published online today in Applied Developmental Science . ... on children in therapeutic settings, not much is known about ... youth development more broadly. "Our findings suggest that ...
Cached Biology News:A quicker, cheaper way to detect staph in the body 2A quicker, cheaper way to detect staph in the body 3NYBG launches Amazon Forest Program to help conserve Earth's largest intact forest 2NYBG launches Amazon Forest Program to help conserve Earth's largest intact forest 3NYBG launches Amazon Forest Program to help conserve Earth's largest intact forest 4NYBG launches Amazon Forest Program to help conserve Earth's largest intact forest 5NYBG launches Amazon Forest Program to help conserve Earth's largest intact forest 6Caring for animals may correlate with positive traits in young adults 2
(Date:12/19/2014)... 18, 2014 Egenix, Inc. is pleased to announce ... of the Board, to succeed Donald Fresne ; Mr. ... continue as a member of the Board.  In recognition of ... the company over almost twenty years, the Board designated Mr. ... Directors has established a Search Committee to find a suitable ...
(Date:12/17/2014)... 16, 2014 The Activated Carbon ... which is why IBISWorld updated its original industry research ... benefit from an intensified focus on environmental policy. Over ... emission standards for power plants and a range of ... IBISWorld Industry Analyst Sarah Kahn, “a range of downstream ...
(Date:12/17/2014)... 17, 2014 Achim Noack has been ... Stoller Group. In this position, Noack will assist Jerry ... matters, develop marketing strategy and supervise global marketing management ... “Achim has tremendous knowledge and experience in the crop ... “His experience and innovative thinking will be a great ...
(Date:12/17/2014)... This report is a professional ... For an overview analysis, the report introduces quartz ... structure, industry overview, policy analysis, and news analysis, ... has witnessed rapid development with key manufacturers increasing ... report mentions quartz tubing upstream raw materials and ...
Breaking Biology Technology:Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 2Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 3Achim Noack Joins Stoller Group as Global Vice President of Marketing and Administration 22020 Quartz Tubing Market: Global Development & Forecasts Analysis Now at DeepResearchReports.com 2
... This is the 10th in a series of articles on ... , , Madison, Wis. - In Step ... time we focus specifically on the federal laws. , ... both state and federal securities laws and regulations. Of equal ...
... technology continues its slow but steady march, new issues seem to ... been made, and the issues still to address, will be the ... May 9 and 10 at the Fluno Center on the ... Chaiken Dr. Barry Chaiken, associate chief medical officer of ...
... at about this time (actually it was April rather than ... Chicago and broke all the meeting records: total attendance, foreign ... you name it, it was broken. But even new records ... I talking about? Well, the BIO Annual International Convention ...
Cached Biology Technology:Early Stage 10: The nuances of federal laws 2Early Stage 10: The nuances of federal laws 3Early Stage 10: The nuances of federal laws 4Early Stage 10: The nuances of federal laws 5Digital Healthcare Conference 2007: Mounting obstacles for health IT 2Digital Healthcare Conference 2007: Mounting obstacles for health IT 3Olympics of biotechnology has international flavor 2Olympics of biotechnology has international flavor 3Olympics of biotechnology has international flavor 4Olympics of biotechnology has international flavor 5
HIF-1 beta (ARNT1) Purified Anti-Mouse, Anti-Rat, Anti-Human clone 29, Isotype Mouse IgG 1 , 50 µg Consult technical datasheet for details....
NNT-1/BSF-3 (N-14)...
BI-1 Polyclonal Antibody Storage Temperature: -20C Shipping: gel pack Shelf-Life: 12 months...
... Comments: Ab-1 stains tumor cells of embryonal ... type of germ cell tumors like seminoma. Glandular ... are positive. Luminal and endocrine cells of stomach ... breast are also positive. Epitope: Carbohydrate ...
Biology Products: