Navigation Links
Global rivers emit 3 times IPCC estimates of greenhouse gas nitrous oxide
Date:12/20/2010

ing nitrogen-enriched urbanized and agricultural watersheds, highlighting the importance of managing nitrogen before it reaches open water," Gholz says. "This new global emission estimate is startling."

Atmospheric nitrous oxide concentration has increased by some 20 percent over the past century, and continues to rise at a rate of about 0.2 to 0.3 percent per year.

Beaulieu and colleagues, say the global warming potential of nitrous oxide is 300-fold greater than carbon dioxide.

Nitrous oxide accounts for some six percent of human-induced climate change, scientists estimate.

They believe that nitrous oxide is the leading human-caused threat to the atmospheric ozone layer, which protects Earth from harmful ultraviolet radiation from the Sun.

Researchers had estimated that denitrification in river networks might be a globally important source of human-derived nitrous oxide, but the process had been poorly understood, says Beaulieu, and estimates varied widely.

While more than 99 percent of denitrified nitrogen in streams is converted to the inert gas dinitrogen rather than nitrous oxide, river networks are still leading sources of global nitrous oxide emissions, according to the new results.

"Changes in agricultural and land-use practices that result in less nitrogen being delivered to streams would reduce nitrous oxide emissions from river networks," says Beaulieu.


'/>"/>

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

Page: 1 2

Related biology news :

1. Malaspina 2010, the biggest ever expedition on global change, sets sail
2. Reportlinker Adds Biometrics: Technologies and Global Markets
3. Reportlinker Adds Global Biochip Markets: Microarrays and Lab-on-a-Chip
4. Super-sized world: Conference addresses global obesity epidemic, explores policies, interventions
5. Reportlinker Adds Global Flow Cytometers Industry
6. VaxTrac Receives $100,000 Grand Challenges Explorations Grant for Innovative Global Health Research
7. Tropical forest diversity increased during ancient global warming event
8. Scientific Grand Challenges identified to address global sustainability
9. Global Leaders Combine Forces to Provide Identity Security Documents for INTERPOL
10. Entrust President and CEO Bill Conner Addresses Global Dignitaries During INTERPOL 79th General Assembly
11. Global Obesity Summit 2010 in Jackson addresses growing epidemic at ground zero
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/24/2015)... This report analyzes the worldwide markets for Face and ... and Voice Biometrics. The report provides separate comprehensive analytics for the ... Europe , Asia-Pacific , ... and Latin America . Annual estimates and forecasts ... historic analysis is provided for these markets. Market data and analytics ...
(Date:2/18/2015)... , Feb. 18, 2015  Cepheid (NASDAQ: ... at the following conferences, and invited investors to participate via ... Boston, MA Tuesday, March 3, 2015 at ... Conference, Orlando, FL Wednesday, March 4, ... Webcasts To access the live webcasts for these events, please ...
(Date:2/11/2015)... DALLAS , February 11, 2015 /PRNewswire/ ... market research report "Access Control Market by Product ... (Commercial, Residential, Military and Defense, Government, Industrial, Healthcare, ... , published by MarketsandMarkets, the Access Control ... by 2020, growing at a CAGR of ...
Breaking Biology News(10 mins):World Face and Voice Biometrics Industry 2World Face and Voice Biometrics Industry 3World Face and Voice Biometrics Industry 4World Face and Voice Biometrics Industry 5World Face and Voice Biometrics Industry 6World Face and Voice Biometrics Industry 7World Face and Voice Biometrics Industry 8World Face and Voice Biometrics Industry 9World Face and Voice Biometrics Industry 10World Face and Voice Biometrics Industry 11World Face and Voice Biometrics Industry 12World Face and Voice Biometrics Industry 13World Face and Voice Biometrics Industry 14World Face and Voice Biometrics Industry 15World Face and Voice Biometrics Industry 16Cepheid to Webcast Upcoming Financial Presentations 2Access Control Market Worth $10.4 Billion by 2020 2Access Control Market Worth $10.4 Billion by 2020 3Access Control Market Worth $10.4 Billion by 2020 4
... for the first time a surprising and unexpected plasticity ... cells are made in early development. Scientists ... type of gene that controls cell fate by regulating ... stem and progenitor cells in blood forming tissues to ...
... (August 2, 2012) Autism Speaks, the world,s ... its expanded collaboration with Sigma Advanced Genetic Engineering ... develop the first rat models with modified autism ... autism research. Expansion of the collaboration follows ...
... in 10 children suffers from asthma but the potential ... known. Cincinnati-based researchers now report new evidence that exposure ... a direct link to asthma development during childhood. ... Penicillium variabileare typically found growing in water-damaged homes, putting ...
Cached Biology News:Embryonic blood vessels that make blood stem cells can also make beating heart muscles 2Embryonic blood vessels that make blood stem cells can also make beating heart muscles 3Autism Speaks and SAGE® Labs develop rat models for translational autism research 2Autism Speaks and SAGE® Labs develop rat models for translational autism research 3Infants exposed to specific molds have higher asthma risk 2
(Date:3/5/2015)... Plant disease specialists from around the ... Annual Meeting of The American Phytopathological Society. Details ... now at APSnet.org/meet . , The Preliminary Daily ... be held August 1-5, 2015 in Pasadena, California, U.S.A. ... Workshops, and committee meetings, all carefully balanced to deliver ...
(Date:3/5/2015)... NORWALK, Conn. , March 5, 2015 /PRNewswire/ ... Network , a leading online community to ... understanding of the newest information available regarding the ... coverage of kidney cancer. March is ... there are very few effective adjuvant treatment options ...
(Date:3/5/2015)... Texas (PRWEB) March 05, 2015 ... of acute and chronic orthopedic conditions such as ... knee, tennis elbow, and joint pain due to ... be administered during orthopedic surgeries to promote better ... scientific advances in nearly pain-free bone marrow harvesting ...
(Date:3/4/2015)... USDM Life Sciences , a ... industry, hired David Blewitt as Vice President ... Services and Solutions at USDM Life Sciences , which ... maintaining compliance with government regulations worldwide. , For ... life sciences regulatory and IS compliance professional with extensive ...
Breaking Biology Technology:American Phytopathological Society Announces Annual Meeting Daily Schedule 2OncoTherapy Network Highlights Kidney Cancer Awareness Month 2OncoTherapy Network Highlights Kidney Cancer Awareness Month 3Riordan-McKenna Institute of Regenerative Orthopedics and Stem Cell Therapy Announces Open House in Southlake, Texas on Friday, March 6th from 5:30 pm to 7:30 pm. 2Riordan-McKenna Institute of Regenerative Orthopedics and Stem Cell Therapy Announces Open House in Southlake, Texas on Friday, March 6th from 5:30 pm to 7:30 pm. 3Riordan-McKenna Institute of Regenerative Orthopedics and Stem Cell Therapy Announces Open House in Southlake, Texas on Friday, March 6th from 5:30 pm to 7:30 pm. 4Riordan-McKenna Institute of Regenerative Orthopedics and Stem Cell Therapy Announces Open House in Southlake, Texas on Friday, March 6th from 5:30 pm to 7:30 pm. 5USDM Life Sciences Names David Blewitt VP of Cloud Compliance for Regulated Life Sciences 2USDM Life Sciences Names David Blewitt VP of Cloud Compliance for Regulated Life Sciences 3
... Particle Sciences, Inc., a leading pharmaceutical CRO, ... alliance with HORIBA Instruments of Irvine, CA, which is ... of Kyoto, Japan.  This alliance assures that both client ... most up-to-date physical characterization tools with operational expertise in ...
... Tengion, Inc. (Nasdaq: TNGN ), a leader ... and Chief Executive Officer of Tengion, will present at the ... February 14, 2011, at 2:00 p.m. EST.  Dr. Nichtberger will ... or Wide Open?" the following day on Tuesday, February 15, ...
... MIAMI, Feb. 7, 2011 Based on U.S. Patent 7,824,612 ... Programming Same"), Fuisz Pharma today announced the use of their ... smart tablets that communicate with personal body fluid analyzers. ... acceptable analyte values for body fluids, set by the drug ...
Cached Biology Technology:Particle Sciences and HORIBA Instruments Form Strategic Relationship 2Particle Sciences and HORIBA Instruments Form Strategic Relationship 3Tengion to Present at the 13th Annual BIO CEO & Investor Conference and the Leerink Swann 'Hot Topics in Therapeutics' Roundtable Conference 2
... ErbB 2 - BSA and Azide ... tested applications). Antigen: ... KLH, corresponding to C terminal amino ... Entrez GeneID: 2064 ...
Anti human PPAR gamma2 mouse monoclonal antibody...
Anti-Potassium Channel Kv2.2 Immunogen: Synthetic peptide from rat Kv2.2. Available Date: 38376...
Mouse monoclonal [1241] to Parainfluenza Virus type 2...
Biology Products: