Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
. Earth Science News .




WOOD PILE
Study Slashes Deforestation Carbon Emission Estimate
by Staff Writers
Pasadena CA (JPL) Jun 22, 2012


Distribution of annual carbon emissions from gross forest cover loss between 2000 and 2005 mapped at a spatial resolution of 11.5 miles (18.5 kilometers). Image credit: Winrock International. For a larger version of this image please go here.

A new study with NASA participation has sharply reduced previous estimates of how much carbon was emitted into Earth's atmosphere from tropical deforestation in the early 2000s. Research scientist Sassan Saatchi of NASA's Jet Propulsion Laboratory, Pasadena, Calif., participated in the study, published June 21 in the journal Science.

The team, led by researchers from Winrock International, an environmental nonprofit organization in Little Rock, Ark., also included scientists from Applied GeoSolutions, Durham, N.H.; and the University of Maryland, College Park. They combined satellite data on gross forest loss and forest carbon stocks to track emissions from deforestation in the world's tropical forests.

The resulting gross emissions estimate of 0.81 billion metric tons of carbon emitted per year is approximately one third of previously published estimates, and represents just 10 percent of the total global human-produced carbon emissions over the time period analyzed (2000 to 2005).

Two countries - Brazil and Indonesia - produced the highest emissions during the study period, accounting for 55 percent of total emissions from tropical deforestation. Nearly 40 percent of all forest loss in the study region was concentrated in the dry tropics, but accounted for only 17 percent of total carbon emissions, reflecting their relatively low carbon stocks in comparison to those found in tropical moist forests.

The Winrock study is the first study of global carbon emissions from tropical deforestation to use satellite data, rather than tabular bookkeeping models, to account for carbon.

This approach allows for a much more refined analysis and yields results that will serve as a better benchmark for monitoring global progress on reducing emissions in the future. Individual emissions numbers were calculated for each country, along with a statistical uncertainty range.

"These detailed emissions estimates would not have been possible without the NASA satellites that helped us quantify forest cover change and forest carbon stocks, which are the two critical data sources for this work," said Saatchi.

Data from NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on NASA's Terra satellite; NASA's Ice, Cloud and land Elevation Satellite (ICESat); NASA's Quick Scatterometer (QuikScat) satellite; and the joint NASA/U.S. Geological Survey Landsat program were used to produce the estimate.

The team hopes the policy mechanism of the United Nations Framework Convention on Climate Change that proposes to compensate developing countries for reducing emissions from deforestation and forest degradation (REDD) will benefit from a more accurate benchmark of emissions from deforestation.

"The relative contribution of deforestation to total greenhouse gas emissions will likely continue to decline through time as emissions from other sectors rise, but the loss of millions of hectares of forest per year remains considerable," said Alexander Lotsch of the World Bank, which funded the study.

"Effectively reducing forest-related emissions through international efforts that also promote biodiversity conservation, forest livelihoods and help maintain essential forest functions such as water regulation, is an essential measure to avoid serious climate change impacts and to ensure low carbon sustainable development in the developing world."

The team plans to update their work for the period from 2006 to 2010 to assess whether carbon emissions increased or decreased in the second half of the 2000s.

.


Related Links
Winrock International
Sassan Saatchi's terrestrial carbon cycle research
Forestry News - Global and Local News, Science and Application






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





WOOD PILE
Scientists develop first satellite deforestation tracker for whole of Latin America
London UK (SPX) Jun 21, 2012
An international team of researchers in Colombia, the UK, USA and Switzerland have developed the first ever system to monitor deforestation across Latin America in near real-time using satellite data. Preliminary results from the new system reveal that in parts of Colombia, deforestation has increased by 340 per cent since 2004; and over a million hectares of forest have been lost in the Gran Ch ... read more


WOOD PILE
Population displacement during disasters predicted using mobile data

Japan sorry for not using US radiation map

Nearly 15 million people displaced by disasters in 2011

Experts discuss better nuclear disaster communication

WOOD PILE
Study: Handwriting in decline with tech

E-book trend slow at US libraries: study

Samsung launches new phone in US, taking on Apple

China defends rare earths policy

WOOD PILE
Chinese submersible aims for 23,000 feet

Restoring Streams Helps Winter Songbirds

Study suggests expanded concept of 'urban watershed'

Oracle chief buys Hawaiian island

WOOD PILE
Arctic climate more vulnerable than thought, maybe linked to Antarctic ice-sheet behavior

Climate drilling in the Arctic Circle

Elephant seals help uncover slower-than-expected Antarctic melting

Remote Siberian Lake Holds Clues to Arctic - and Antarctic - Climate Change

WOOD PILE
Drought hits Argentine corn and soy crops

Link between vitamin C and twins can increase seed production in crops

Over 30 years of global soil moisture observations for climate applications

Key part of plants' rapid response system revealed

WOOD PILE
5.9 quake hits Indonesia's Sumatra: USGS

Chris becomes season's first Atlantic hurricane

Thousands evacuated as storm strikes Taiwan

UN says Afghan quakes killed 75

WOOD PILE
Nigerian leader sacks security adviser, defence minister

'I was shot for defying Kagame', says Rwanda's ex-army boss

Rwanda's ex-army boss testifies of betrayal in murder bid

Lions on the loose in Kenyan capital's urban jungle

WOOD PILE
Google sets out to save dying languages

Adaptable decision making in the brain

The Rare Biosphere of the Human Body

Expanding waistlines threaten the planet: researchers




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement