e360 digest


28 Jan 2009: Climate Geo-engineering Study
Says Some Schemes May Be Effective

Some futuristic geo-engineering projects may help slow global warming if they are developed in conjunction with large reductions in carbon dioxide emissions, according to a new study. The study, led by Tim Lenton at Britain’s University of East Anglia, said one of the more promising technologies is the sequestration of carbon by burning large amounts of agricultural waste in airtight conditions and then burying it underground as charcoal. He said that schemes to reflect more sunlight back into space by launching orbiting mirrors or introducing aerosols into the atmosphere might be effective, but carried a significant risk of rapidly warming the earth if they were discontinued. Fertilizing the ocean with iron to stimulate growth of C02-absorbing algae would take hundreds of years to be effective and might carry risk to marine life, said the study, published in the journal Atmospheric Chemistry and Physics Discussions. Most important, said Lenton, are emissions cuts, adding, “Geo-engineering alone cannot solve the problem.” Some scientists believe that geo-engineering schemes will inevitably be deployed as the earth rapidly warms.


Yale
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
.

SEARCH e360



Donate to Yale Environment 360
Yale Environment 360 Newsletter


CONNECT


ABOUT

About e360
Contact
Submission Guidelines
Reprints

E360 en Español

Universia partnership
Yale Environment 360 articles are now available in Spanish and Portuguese on Universia, the online educational network.
Visit the site.


DEPARTMENTS

Opinion
Reports
Analysis
Interviews
Forums
e360 Digest
Podcasts
Video Reports

TOPICS

Biodiversity
Business & Innovation
Climate
Energy
Forests
Oceans
Policy & Politics
Pollution & Health
Science & Technology
Sustainability
Urbanization
Water

REGIONS

Antarctica and the Arctic
Africa
Asia
Australia
Central & South America
Europe
Middle East
North America

e360 VIDEO

“video
Tribal people and ranchers join together to stop a project that would haul coal across their Montana land.
Watch the video.

e360 MOBILE

Mobile
The latest
from Yale
Environment 360
is now available for mobile devices at e360.yale.edu/mobile.

e360 PHOTO ESSAY

“Alaska
An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S.
View the photos.

e360 VIDEO

“Battle
The 2015 Yale e360 Video Contest winner documents a Northeastern town's bitter battle over a wind farm.
Watch the video.

e360 VIDEO

Food waste
An e360 video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs.
Watch the video.

e360 VIDEO

Colorado wildfires
An e360 video goes onto the front lines with Colorado firefighters confronting deadly blazes fueled by a hotter, drier climate.
Watch the video.

e360 SPECIAL REPORT

“Tainted
A three-part series Tainted Harvest looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup.
Read the series.

OF INTEREST



Yale