Navigation Links
Certain Arctic lakes store more greenhouse gases than they release
Date:7/31/2014

New research, supported by the National Science Foundation (NSF), counters a widely-held scientific view that thawing permafrost uniformly accelerates atmospheric warming, indicating instead that certain Arctic lakes store more greenhouse gases than they emit into the atmosphere.

The study, published this week in the journal Nature, focuses on thermokarst lakes, which occur as permafrost thaws and creates surface depressions that fill with melted fresh water, converting what was previously frozen land into lakes.

The research suggests that Arctic thermokarst lakes are "net climate coolers" when observed over longer, millennial, time scales.

"Until now, we've only thought of thermokarst lakes as positive contributors to climate warming," said lead researcher Katey Walter Anthony, associate research professor at the University of Alaska Fairbanks Institute of Northern Engineering. "It is true that they do warm climate by strong methane emissions when they first form, but on a longer-term scale, they switch to become climate coolers because they ultimately soak up more carbon from the atmosphere than they ever release."

The researchers observed that roughly 5,000 years ago, thermokarst lakes in ice-rich regions of North Siberia and Alaska began cooling, instead of warming the atmosphere.

"While methane and carbon dioxide emissions following thaw lead to immediate radiative warming," the authors write, "carbon uptake in peat-rich sediments occurs over millennial time scales."

Using published data from the circumpolar Arctic, their own new field observations of Siberian permafrost and thermokarsts, radiocarbon dating, atmospheric modeling and spatial analyses, the research team studied how thawing permafrost is affecting climate change and greenhouse gas emissions.

Researchers found that "thermokarst basins switched from a net radiative warming to a net cooling climate effect about 5,000
'/>"/>

Contact: Peter West
pwest@nsf.gov
703-292-7530
National Science Foundation
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Nicotine found to inhibit DNA-strand break caused by a certain carcinogen in smoke
2. SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT
3. Animals conceal sickness symptoms in certain social situations
4. First demonstration in human cells of chromosomal translocations that cause certain cancer
5. Hotspots of climate change impacts in Africa: Making sense of uncertainties
6. Certain genetic variants may put bladder cancer patients at increased risk of recurrence
7. Montreal researchers find a link between pollutants and certain complications of obesity
8. Drifting herbicides produce uncertain effects
9. Are sweetpotato weevils differentially attracted to certain colors?
10. Mating is the kiss of death for certain female worms
11. Gene found to be crucial for formation of certain brain circuitry
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Certain Arctic lakes store more greenhouse gases than they release
(Date:6/24/2015)... 24, 2015 This report provides market analysis ... six years. It contains an analysis of the drivers, ... their impact from the short, medium, and long term ... industry, market, and technology trends that currently, prevail in ... concerned authorities to efficiently manage the increasing marine traffic ...
(Date:6/23/2015)... June 22, 2015 ... addition of the "Body-Worn Temperature Sensors Market ... and Forecast 2014 - 2020" report to ... analysis of the global body-worn temperature sensors market. ... segmented on the basis of types, care setting, ...
(Date:6/17/2015)... , Deutschland und GERMANTOWN, Maryland , ... ®   Produktlinie mit DNA-Tests verbessert ... N.V. (NASDAQ: QGEN ; Frankfurt Prime Standard: QIA) ... neue STR-Testkits der Produktlinie Investigator ® ... den Markt eingeführt. Die neuen Kits zur Erstellung genetischer ...
Breaking Biology News(10 mins):Automatic Identification System Market by Class, by Platform, by Application and by Geography - Global Forecasts & Analysis to 2014 - 2020 2Body-Worn Temperature Sensors Market - Global Industry Analysis 2QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 2QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 3QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 4QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 5QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 6
... goats and other animals that have suffered from neglect, according ... In this first scientific study of rescued animals, the researchers ... poor welfare, such as inappropriate diet, and lack of space ... spatial awareness test, which involved giving the animals an opportunity ...
... special issue of Technology and Innovation ... ), devoted to studies on medical technology and health ... from new technologies to reduce the cost of health ... special issue of Technology and Innovation on ...
... gas development expands nationwide, policymakers, communities and public health ... as a means of predicting the effects of drilling ... the Colorado School of Public Health. The report, ... Public Health , highlights lessons learned when scientists from ...
Cached Biology News:Rescue me: New study finds animals do recover from neglect 2Technology transforms health care 2Technology transforms health care 3Health impact assessments prove critical public health tool 2
(Date:7/1/2015)... ALTO, Calif. , July 1, 2015 /PRNewswire/ ... focused on the development of groundbreaking drugs to ... (ALS), announced today that Robert G. Miller ... Center at Sutter Health,s California Pacific Medical Center ... The ALS Association for $1.5 million to help ...
(Date:7/1/2015)... ... , ... A newly launched business plan contest will ask startup companies from ... life sciences R&D. The Pistoia Alliance President’s Startup Challenge 2015 will see small and ... of expert mentorship from a senior industry figure drawn from the Pistoia Alliance membership. ...
(Date:7/1/2015)... (PRWEB) , ... July 01, 2015 , ... ... sterilized to combat pathogen transmission. CTI’ new Medical Joysticks have an impermeable ... devices now have an operator control device that will increase healthcare worker safety ...
(Date:6/30/2015)... , ... June 30, 2015 , ... ... 12 to take part in the first half of “Integrative Biotechnology,” an applied ... partnership established in summer 2014, this course combines students from both universities and ...
Breaking Biology Technology:Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 2Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 3Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 4Pistoia Alliance Launches Startup Challenge 2Pistoia Alliance Launches Startup Challenge 3Sanitized Medical Joysticks for a Safer and Healthier Work Environment 2Rivier University and Beijing City University Academic and Cultural Exchanges Begin 2
... - Ranked Number 7 out of top 20 Employers ... 9 EMD Serono, Inc., an affiliate,of Merck KGaA, ... Science magazine as a top employer in the biotechnology ... 20 employers,across the life sciences., "We are honored ...
... (Nasdaq: ERES ), a leading provider of ... to the pharmaceutical,biotechnology, medical device, and related industries, ... quarter results for the period ended,September 30, 2008 ... closes.,After the release, the Company will host a ...
... Million RMB Commercial Bank Loan With Interest Payment ... Biotech Ltd. (Amex:,SVA), a vaccine-focused biotech company in ... Promotion Association at the,Zhongguancun Science and Technology Park ... of that program, Sinovac Biotech Co. Ltd.,s,("the Company") ...
Cached Biology Technology:EMD Serono Named as a Top Employer by Science Magazine 2eResearchTechnology, Inc. to Announce 2008 Third Quarter Results on October 30, 2008 2Sinovac's Credit Rating Upgraded to AAZ, Second Highest Rating 2Sinovac's Credit Rating Upgraded to AAZ, Second Highest Rating 3
... is the most thoroughly characterized enzyme available ... its overall utility and efficacy. , Its ... PCR applications. , It is QC ... AmpliTaq DNA Polymerase is a 94 kDa ...
Taq DNA Polymerase (T. aquaticus), 4 x 250 units. For PCR and other procedures requiring DNA polymerase activity at elevated temperatures. Category: Nucleotides & Enzymes & Biochemicals, Modifying En...
... DNA Polymerase is a versatile and easy-to ... PCR applications. GCpro Taq DNA Polymerase is ... E. coli, containing the DNA polymerase I ... a highly processive 5'-3' DNA polymerase activity. ...
Aspergillus (IgG) Ab EIA Sample Size: 100 l...
Biology Products: