Navigation Links
Tropical forests -- Earth's air conditioner

Planting and protecting trees—which trap and absorb carbon dioxide as they grow—can help to remove carbon dioxide from the atmosphere. But a new study suggests that, as a way to fight global warming, the effectiveness of this strategy depends heavily on where these trees are planted. In particular, tropical forests are very efficient at keeping the Earth at a happy, healthy temperature.

The researchers, including Ken Caldeira of Carnegie’s Department of Global Ecology and Govindasamy Bala at Lawrence Livermore National Laboratory, found that because tropical forests store large amounts of carbon and produce reflective clouds, they are especially good at cooling the planet. In contrast, forests in snowy areas can warm the Earth, because their dark canopy absorbs sunlight that would otherwise be reflected back to space by a bright white covering of snow.

The work simulates the effects of large-scale deforestation, and accounts for the positive and negative climate effects of tree cover at different latitudes. The result, which appears in this week’s early online edition of the Proceedings of the National Academy of Sciences, makes a strong case for protecting and restoring tropical forests.

"Tropical forests are like Earth’s air conditioner," Caldeira said. "When it comes to rehabilitating forests to fight global warming, carbon dioxide might be only half of the story; we also have to account for whether they help to reflect sunlight by producing clouds, or help to absorb it by shading snowy tundra."

Forests in colder, sub-polar latitudes evaporate less water and are less effective at producing clouds. As a result, the main climate effect of these forests is to increase the absorption of sunlight, which can overwhelm the cooling effect of carbon storage.

However, Caldeira believes it would be counterproductive to cut down forests in snowy areas, even if it could help to combat global warming. "A primary reason we are tryi ng to slow global warming is to protect nature," he explains. "It just makes no sense to destroy natural ecosystems in the name of saving natural ecosystems."
'"/>

Source:Carnegie Institution


Related biology news :

1. Finding Cures For Tropical Diseases: Is Open Source An Answer?
2. Tropical Deforestation affects rainfall in the U.S. and around the globe
3. Tropical dry forests receive international recognition
4. Tropical Atlantic cooling and African deforestation correlate to drought, report scientists
5. Tropical forest CO2 emissions tied to nutrient increases
6. Live fast, die young true for forests too
7. U.N. mulls the protection of Earths forests
8. Expanding forests darken the outlook for butterflies, study shows
9. Emerald Spectre haunts Ontarios ash forests
10. Scientists must offer solutions for conserving tropical forests in a rapidly changing world
11. New book on rain forests, slash-and-burn agriculture

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/1/2016)... 2016 Rising sales of consumer ... touchfree intuitive gesture control market size ... of consumer electronics coupled with new technological advancements to ... size through 2020   --> ... technological advancements to drive global touchfree intuitive gesture control ...
(Date:1/27/2016)... WEST CHESTER, Ohio , Jan. 27, 2016 /PRNewswire/ ... services supplier based in West Chester, Ohio ... and their award winning service staff, based in ... Track,s technical capacity and ability to provide modifications, installations ... John Dovalina , CEO of PLUS, commented, "PLUS ...
(Date:1/22/2016)... , Jan. 22, 2016 ... addition of the "Global Biometrics Market ... their offering. --> http://www.researchandmarkets.com/research/p74whf/global_biometrics ... "Global Biometrics Market in Retail Sector ... --> Research and Markets ( ...
Breaking Biology News(10 mins):
(Date:2/12/2016)... N.J. , Feb. 12, 2016  BD (Becton, ... global medical technology company, today announced the launch of ... Genome Biology and Technology (AGBT) Meeting. ... System enables genomic research by providing cost effective NGS ... System is a high-throughput, fully integrated, next generation sequencing ...
(Date:2/11/2016)... Non-profit Consortium Aims to Generate Genomic Information for ... Discovery --> --> The ... sequence 100,000 individuals. It is intended to initially include populations ... North and East Asian countries. --> ... focus on creating phased reference genomes for all major Asian ...
(Date:2/11/2016)... and GERMANTOWN, Maryland , February 11, ... Standard: QIA) today announced the introduction of more than ... profiling, expanding QIAGEN,s portfolio of Sample to Insight solutions ... select from over 20,000 human genes and lncRNA to ... cellular phenotypes and disease processes. --> QGEN ...
(Date:2/11/2016)... Feb. 11, 2016  Wellcentive today announced it ... Portland, Oregon -based community care organization (CCO) ... health analytics, quality reporting and care management solutions ... its team of quality managers, analysts and care ... provider groups serving FamilyCare members. ...
Breaking Biology Technology: