HOME >> BIOLOGY >> NEWS
Study: Temperate forests could worsen global warming

Growing a forest might sound like a good idea to combat global warming, since trees draw carbon dioxide from the air and release cool water from their leaves. But they also absorb sunlight, warming the air in the process. According to a new study from the Carnegie Institution's Department of Global Ecology and Lawrence Livermore National Laboratory, planting forests at certain latitudes could make the Earth warmer. Carnegie's Ken Caldeira will present the work at the American Geophysical Union Fall Meeting in San Francisco on December 7, 2005.

The researchers used complex climate modeling software to simulate changes in forest cover and then examined the effects on global climate. Their results were surprising. "We were hoping to find that growing forests in the United States would help slow global warming," Caldeira said. "But if we are not careful, growing forests could make global warming even worse."

The researchers found that while tropical forests help keep Earth cool by evaporating a great deal of water, northern forests tend to warm the Earth because they absorb a lot of sunlight without losing much moisture. In one simulation, the researchers covered much of the northern hemisphere (above 20 latitude) with forests and saw a jump in surface air temperature of more than 6 F. Covering the entire planet's land mass with trees led to a more modest increase of about 2 F.

When the scientists restricted the simulation to middle latitudes such as the continental United States, the picture was not quite so clear. At first, cooling due to the uptake of carbon dioxide would offset warming from sunlight absorption. But after several decades, carbon dioxide would begin diffusing from the ocean into the atmosphere, diminishing the cooling effect and warming the Earth in the long term.

Caldeira warns against planting forests on abandoned croplands as a strategy to combat global warming, which some have recommended. But he also recognizes the
'"/>

Contact: Dr. Ken Caldeira
kcaldeira@globalecology.stanford.edu
650-704-7212
Carnegie Institution
6-Dec-2005


Page: 1 2

Related biology news :

1. Study: Sticking to the sand might not be such good, clean fun for beachgoers
2. Study: Donated embryos could result in more than 2,000 new embryonic stem cell lines
3. Study: Chest compressions without mouth-to-mouth better for out-of-hospital cardiac arrest
4. Study: Long legs are more efficient
5. Study: Living coral reefs provide better protection from tsunami waves
6. Study: Rain forest insects eat no more tree species than temperate counterparts
7. Study: Newer antibiotic more effective at treating elders pneumonia
8. Study: Competition for sex is a jungle out there
9. Study: Arctic undergoing holistic climate-change response
10. Study: Run-down feeling with illness may last longer as people age
11. Study: Nanotech processing greener than oil refining

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


(Date:3/28/2017)... , March 28, 2017 ... Biometrics), Hardware (Camera, Monitors, Servers, Storage Devices), Software (Video ... and Region - Global Forecast to 2022", published by ... in 2016 and is projected to reach USD 75.64 ... 2017 and 2022. The base year considered for the ...
(Date:3/23/2017)... , Mar. 23, 2017 Research and Markets ... Market Analysis & Trends - Industry Forecast to 2025" report ... ... at a CAGR of around 8.8% over the next decade to ... report analyzes the market estimates and forecasts for all the given ...
(Date:3/20/2017)... Pa. , March 20, 2017 PMD ... 2.0 personal spirometer and Wellness Management System (WMS), a ... Founded in 2010, PMD Healthcare is a Medical ... with a mission dedicated to creating innovative solutions that ... life. With that intent focus, PMD developed the first ...
Breaking Biology News(10 mins):
(Date:4/21/2017)... ... , ... Having worked on the design of the innovative Triton™ lab ... top lab design architects from around the country at the Lab Design Conference 2017 ... Engineering Greg Casey will be at the show, where they will highlight the unique ...
(Date:4/21/2017)... BELLINGHAM, Washington, USA (PRWEB) , ... April 21, ... ... for sensing, imaging, and related applications were the focus of researchers, engineers, product ... Sensing 2017 in Anaheim. , Sponsored by SPIE, the international society ...
(Date:4/21/2017)... ... April 21, 2017 , ... Frederick Innovative ... range of emerging bio and technology start-ups, is hosting “Celebration Friday” (a festive ... event will start with libations and networking at 3:30 p.m. at FITCI’s 4539 ...
(Date:4/20/2017)... (PRWEB) , ... April 20, 2017 , ... ... Event , this new webinar will explore challenging patient cases when screening for ... the hospital, there may be a need for bridging parental anticoagulation especially for ...
Breaking Biology Technology:
Cached News: