Navigation Links
Sugarcane cools climate
Date:4/17/2011

Palo Alto, CABrazilians are world leaders in using biofuels for gasoline. About a quarter of their automobile fuel consumption comes from sugarcane, which significantly reduces carbon dioxide emissions that otherwise would be emitted from using gasoline. Now scientists from the Carnegie Institution's Department of Global Ecology have found that sugarcane has a double benefit. Expansion of the crop in areas previously occupied by other Brazilian crops cools the local climate. It does so by reflecting sunlight back into space and by lowering the temperature of the surrounding air as the plants "exhale" cooler water. The study is published in the 2nd issue of Nature Climate Change, posted on-line April 17.

The research team,* led by Carnegie's Scott Loarie, is the first to quantify the direct effects on the climate from sugarcane expansion in areas of existing crop and pastureland of the cerrado, in central Brazil.

The researchers used data from hundreds of satellite images over 733,000 square milesan area larger than the state of Alaska. They measured temperature, reflectivity (also called albedo), and evapotranspirationthe water loss from the soil and from plants as they exhale water vapor.

As Loarie explained: "We found that shifting from natural vegetation to crops or pasture results in local warming because the plants give off less beneficial water. But the bamboo-like sugarcane is more reflective and gives off more watermuch like the natural vegetation. It's a potential win-win for the climateusing sugarcane to power vehicles reduces carbon emissions, while growing it lowers the local air temperature."

The scientists found that converting from natural vegetation to crop/pasture on average warmed the cerrado by 2.79 F (1.55 C), but that subsequent conversion to sugarcane, on average, cooled the surrounding air by 1.67 F (0.93C).

The researchers emphasize that the beneficial effects are contingent on the fact sugarcane is grown on areas previously occupied by crops or pastureland, and not in areas converted from natural vegetation. It is also important that other crops and pastureland do not move to natural vegetation areas, which would contribute to deforestation.

So far most of the thinking about ecosystem effects on climate considers only impacts from greenhouse gas emissions. But according to coauthor Greg Asner, "It's becoming increasingly clear that direct climate effects on local climate from land-use decisions constitute significant impacts that need to be considered core elements of human-caused climate change."


'/>"/>

Contact: Scott Loarie
loarie@gmail.com
650-462-1047
Carnegie Institution
Source:Eurekalert

Related biology news :

1. ARS genetic analysis helps spot sugarcane rusts
2. Sugarcane bioethanol: Environmental implications
3. American opinion cools on global warming
4. Long-term study shows effect of climate change on animal diversity
5. White Mountain Research Station to host climate change conference
6. Researchers find animal with ability to survive climate change
7. Severe climate change costs forecast for Pennsylvania, N.C., Tennessee, N.D.
8. Experts discuss climate change during UH lecture series
9. Dont blame cities for climate change, see them as solutions
10. Green coffee-growing practices buffer climate-change impacts
11. Brookhaven scientists take off for southeastern Pacific climate study
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/2/2016)... 2016   The Weather Company , an IBM Business ... industry-first capability in which consumers will be able to interact ... questions via voice or text and receive relevant information about ... Marketers have long sought an advertising solution that can ... personal, relevant and valuable; and can scale across millions of ...
(Date:5/16/2016)... , May 16, 2016   EyeLock LLC , ... announced the opening of an IoT Center of Excellence ... and expand the development of embedded iris biometric applications. ... level of convenience and security with unmatched biometric accuracy, ... identity aside from DNA. EyeLock,s platform uses video technology ...
(Date:4/28/2016)... First quarter 2016:   , ... the first quarter of 2015 The gross margin was ... 18.8) and the operating margin was 40% (-13) Earnings ... flow from operations was SEK 249.9 M (21.2) , ... SEK 7,000-8,500 M. The operating margin for 2016 is ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... UAS LifeSciences, ... launch of their brand, UP4™ Probiotics, into Target stores nationwide. The company, which ... to add Target to its list of well-respected retailers. This list includes such ...
(Date:6/23/2016)... ... June 23, 2016 , ... Charm Sciences, Inc. ... test has received AOAC Research Institute approval 061601. , “This is another AOAC-RI ... stated Bob Salter, Vice President of Regulatory and Industrial Affairs. “The Peel Plate ...
(Date:6/23/2016)... ... , ... STACS DNA Inc., the sample tracking software company, today announced that ... joined STACS DNA as a Field Application Specialist. , “I am thrilled that ... of STACS DNA. “In further expanding our capacity as a scientific integrator, Hays brings ...
(Date:6/23/2016)... , June 23, 2016 On ... session at 4,833.32, down 0.22%; the Dow Jones Industrial Average ... 500 closed at 2,085.45, down 0.17%. Stock-Callers.com has initiated coverage ... INFI ), Nektar Therapeutics (NASDAQ: NKTR ), Aralez ... Inc. (NASDAQ: BIND ). Learn more about these ...
Breaking Biology Technology: