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ANSWERED on Fri 1 Aug 2008 - 5:56 pm UTC by leader

Question: Biofuels increase greenhouse gases

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montecristo 

Customer

 1 Aug 2008 10:15 UTCFri 1 Aug 2008 - 10:15 am UTC 

I would like 3 authoritative sources that say biofuels are causing an increase in greenhouse gases compared to conventional fuels e.g. oil. Include some concrete numbers as evidence.

 

leader 

Answer

 1 Aug 2008 17:56 UTCFri 1 Aug 2008 - 5:56 pm UTC 

Hello Montecristo:

Below are three authoritative sources that confirm the fact that biofuels are causing an increase in greenhouse.

1. Biofuels Cause Global Warming
The author describes the results of two landmark studies in the Journal Science.

Statistics & Numbers
Quoted Text from the above article:
“Rapeseed and maize biodiesels were calculated to produce up to 70 per cent and 50 per cent more greenhouse gases respectively than fossil fuels. The concerns were raised over the levels of emissions of nitrous oxide, which is 296 times more powerful as a greenhouse gas than carbon dioxide. Scientists found that the use of biofuels released twice as much as nitrous oxide as previously realised. The research team found that 3 to 5 per cent of the nitrogen in fertiliser was converted and emitted. In contrast, the figure used by the International Panel on Climate Change, which assesses the extent and impact of man-made global warming, was 2 per cent. The findings illustrated the importance, the researchers said, of ensuring that measures designed to reduce greenhouse-gas emissions are assessed thoroughly before being hailed as a solution.”
Source
http://www.outsidethebeltway.com/archives/2008/02/biofuels_cause_global_warming_/
Numbers & Chart
http://img.qj.net/uploads/articles_module/67498/BiofuelStats.jpg
Support
Article in QJ.Net
http://science.qj.net/Biofuels-may-not-be-a-panacea-say-critics/pg/49/aid/67498




2. Biofuels: First Gen Hurting Environment
The author summarizes the findings of the study, presented to House of Commons

Source
http://www.greenbang.com/2111/biofuels-first-gen-hurting-environment/

Complete Report w/ Evidence
http://www.publications.parliament.uk/pa/cm200708/cmselect/cmenvaud/76/7602.htm




3. Biofuel may produce more Greenhouse Gas than Oil
The author quotes the result of the study at Journal Atmospheric Chemistry & Physics

Statistics & Numbers
Quoted Text from the above article:
“Rapeseed and corn biodiesels were calculated to produce up to 70 percent and 50 percent more greenhouse gases, respectively, than fossil fuels.”

“Scientists found that the use of biofuels released twice as much as nitrous oxide as previously realized. The research team found that 3 to 5 percent of the nitrogen in fertilizer was converted and emitted. In contrast, the figure used by the International Panel on Climate Change, which assesses the extent and impact of man-made global warming, was 2 percent.”
Source
http://www.foxnews.com/story/0,2933,297681,00.html




(cont ..1) MORE INFORMATION FROM THE FINDINGS IN JOURNAL SCIENCE

1.1 Biofuels are worsening global warming
The author describes the results of two major studies in the Journal Science.

Statistics & Numbers
Quoted Text from the above article:
“Analyzing the lifecycle emissions from biofuels, the first study found that carbon released by converting rainforests, peatlands, savannas, or grasslands often far outweighs the carbon savings from biofuels. Conversion of peatland rainforests for oil palm plantations for example, incurs a "carbon debt" of 423 years in Indonesia and Malaysia, while the carbon emission from clearing Amazon rainforest for soybeans takes 319 years of renewable soy biodiesel before the land can begin to lower greenhouse gas levels and mitigate global warming.”
Source http://news.mongabay.com/2008/0207-biofuels.html
Numbers & Chart
Two charts in the studies provide further evidence.

1.2 Biofuels cause more greenhouse gas
The author describes the results of two major studies in the Journal Science.

Statistics & Numbers
Quoted Text from the above article:
“But the study conducted by Searchinger and colleagues concluded that switchgrass, if grown on U.S. lands now devoted to corn, would actually increase greenhouse gas emissions by 50 percent.”

“He found that the conversion process produces 17 to 420 times more carbon dioxide than the annual greenhouse gas reductions these biofuels provide by displacing fossil fuels.”
Source
http://blogs.edmunds.com/greencaradvisor/2008/02/biofuels-cause-more-greenhouse-gas-studies-say.html




OTHER RESOURCES

Please click on the link to find related articles
http://www.climateark.org/shared/search/welcome.aspx?searchtext=biofuel%20bad%20environment

I will be happy to answer any queries.

Thanks,
leader

 

montecristo 

Customer

 13 Aug 2008 17:39 UTCWed 13 Aug 2008 - 5:39 pm UTC 

 

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