Navigation Links
Curbing coal emissions alone might avert climate danger, say researchers
Date:9/12/2008

Hansen says the danger level would bring a rise of about 1.8F above the 2000 global temperature. At or beyond this point, disintegration of the West Antarctic ice sheet and Arctic sea ice could reach tipping points, and set in motion feedback mechanisms that would lead to further, accelerated melting.

To better understand the possible trajectory of future CO2, Kharecha and Hansen devised five emissions scenarios spanning the years 1850 to 2100. Each reflects a different estimate for the global production peak of fossil fuels, the timing of which depends on reserve size, recoverability and available technology. "Even if we assume high-end estimates and unconstrained emissions from conventional oil and gas, we find that these fuels alone are not abundant enough to take carbon dioxide above 450 parts per million," Kharecha said.

The first scenario estimates CO2 levels if emissions from fossil fuels follow "business as usual," growing 2 percent annually until half of each reservoir has been recovered. After this, emissions begin to decline by 2 percent annually. In the second scenario, emissions from coal are reduced, first by developed countries starting in 2013, and then by developing countries a decade later, leading to a global phaseout of emissions by 2050. The phaseout could come either from reducing coal consumption or by capturing and trapping CO2 from coal burning before it reaches the air.

The remaining three scenarios include the phaseout of coal, but consider different scenarios for oil use and supply. One case considers a delay in the oil peak by about 21 years to 2037. Another considers fewer-than-expected additions to currently proven reserves, or taxes on emissions that makes fuels too expensive to extract. The final scenario looks at emissions from oil fields that peak at different times, extending the peak into a plateau that lasts from 2020-2040.

The team used a mathemat
'/>"/>

Contact: Kevin Krajick
kkrajick@ei.columbia.edu
212-854-9729
The Earth Institute at Columbia University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Curbing C. difficiles toxin production
2. Groundbreaking Canada-US study proves link between emissions and mercury pollution in fish
3. CO2 emissions could violate EPA ocean-quality standards within decades
4. Groundbreaking Canada-US study proves link between emissions and mercury pollution in fish
5. RIT to study air pollution and greenhouse gas emissions in the Great Lakes region
6. Decline in uptake of carbon emissions confirmed
7. US faces burning emissions issue
8. Biodiesel could reduce greenhouse gas emissions
9. First-ever study to link increased mortality specifically to carbon dioxide emissions
10. Washington University, 2 industries, team to clean up mercury emissions
11. State, UH teaming up to reduce (ob)noxious air emissions
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Curbing coal emissions alone might avert climate danger, say researchers
(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:12/11/2014)... WINSTON SALEM, N.C. , Dec. 10, 2014  That ... known for quite a while. Hypertension – the medical term ... disease in the early 1800s, and the inflatable cuff that,s ... That doesn,t, however, mean there,s nothing new about hypertension, ... punctured some long-held beliefs about the condition and the best ...
(Date:12/10/2014)... , Dec. 8, 2014 You,ve been here ... account but can,t remember your password, site key or the ... was your first grade teacher? Today, ... the app that will finally put an end to ... 1U TM . 1U leverages a user,s smartphone ...
Breaking Biology News(10 mins):Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3
... with millions of enamel-eroding, gum-inflaming microbes. , One of ... a claim deep within the spaces between teeth and ... ?secreting proteins that destroy the soft tissues and bone ... scientists have identified the thousands of proteins the bacterium ...
... of arboreal animals have learned to glide through the ... and even ?frightening as it sounds ?snakes. , Now, ... University of California, Berkeley, and the University of Texas ... only wingless insects known to actively direct their fall ...
... into ribonucleic acids (RNA)--the building blocks of life--is exploding ... genetics, health, disease and the development of organisms. The ... for researchers to develop a shared vocabulary and system ... international team of RNA scientists, known as the RNA ...
Cached Biology News:UF Researchers Map Bacterial Proteins That Cause Tooth Loss 2UF Researchers Map Bacterial Proteins That Cause Tooth Loss 3Falling ants glide back to trunk to avoid dangers of forest floor 2Falling ants glide back to trunk to avoid dangers of forest floor 3Falling ants glide back to trunk to avoid dangers of forest floor 4Falling ants glide back to trunk to avoid dangers of forest floor 5RNA project to create language for scientists worldwide 2RNA project to create language for scientists worldwide 3
(Date:12/24/2014)... SPRING, Md. , Dec. 24, 2014 /PRNewswire/ ... announced today that Medtronic, Inc. (NYSE: ... to the U.S. Food and Drug Administration (FDA) ... II implantable drug infusion system (including a newly ... ® (treprostinil) Injection delivered intravenously to patients ...
(Date:12/24/2014)... , Dec. 24, 2014  Vermillion, Inc. (Nasdaq: ... gynecologic disease, announced today that the Company closed ... Oracle Investment Management, Jack W. Schuler , ... proceeds were $10.5 million, before offering expenses.  The ... general corporate purposes. Under the terms ...
(Date:12/24/2014)... (PRWEB) December 23, 2014 “Preparative ... Gas, HPLC, Flash), Consumables (Columns, Solvents, Buffers, Valves, ... Food & Agriculture) - Forecasts to 2019” provides ... challenges, opportunities, current market trends, and strategies impacting ... the estimates and forecasts of the revenue and ...
(Date:12/24/2014)... Boston, MA (PRWEB) December 23, 2014 ... presentation, Dr. James L. Sherley, director of the Adult ... attention on an often overlooked and under appreciated unique ... “Asymmetric Self-Renewal by Distributed Stem Cells: Misunderstood in the ... his message to congress participants. He gave the ...
Breaking Biology Technology:United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4Vermillion Announces Closing of Equity Financing 2Vermillion Announces Closing of Equity Financing 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 3Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 4
... May 12, 2003, I wrote on an article on "The ... the writing was on the walls of the demise of ... the final remaining Searle facilities in Chicago. Since then, the ... two years to another article I wrote on May 16, ...
... Network Security Specialist degree program, which trains people ... and data, has earned federal certification by the National Security ... is only one of two in the state and 124 ... its curriculum precisely to what the NSA wishes students to ...
... to attract the presence of major pharmaceutical companies from ... its own environment, said a panel assembled Monday night ... of building the future today in Wisconsin has to ... EraGen CEO Irene Hrusovsky. , ,Woody Hydrick, a senior ...
Cached Biology Technology:Searle spirit lives on in Chicago as alumni celebrate at former home 2Searle spirit lives on in Chicago as alumni celebrate at former home 3Searle spirit lives on in Chicago as alumni celebrate at former home 4Searle spirit lives on in Chicago as alumni celebrate at former home 5Panel stresses drawing outside biotech firms to state 2
...
... kits are optimized for use with ... stainers. This silver stain kit can ... polyacrylamide gels and are mass spectrometry ... silver reagent concentrate, background reducer concentrate, ...
... cycler holds 96 x 0.2 ml tubes ... lid incorporates a thumbwheel to adjust height ... for oil-free cycling. Peltier heat pumps produce ... ramping rates of up to 1.4 degrees ...
BioGenex IHC Kits for Rodent Tissues are designed for immunohistochemistry on rodent and rabbit tissues that are closely related to the source of the primary antibody. This kit comes with rat seconda...
Biology Products: