06 Mar 2013:
Atmospheric CO2 Concentration
Shows Second-Largest Annual Increase
The amount of carbon dioxide in the atmosphere increased by 2.67 parts per million in 2012
, marking the second-biggest jump since levels were first recorded in 1959 and decreasing the chances that the planet will avoid a dangerous temperature increase of 3.6 degrees F (2 C) or higher, U.S. scientists say. The new data, collected in Mauna Loa, Hawaii, suggests that levels of heat-trapping CO2 are now just under 395 parts per million (ppm) and could hit 400 ppm within two years, according to the National Oceanic and Atmospheric Administration (NOAA). The one-year increase was second only to 1998, when CO2 concentrations jumped by 2.84 parts per million; pre-industrial atmospheric concentrations of CO2 were 280 ppm. Pieter Tans, a senior scientist at NOAA's Climate Monitoring and Diagnostics Laboratory, attributed the latest spike to an increase in fossil fuel burning globally, particularly in China. “It’s just a testament to human influence being dominant,” he told the Associated Press. Based on current trends, global temperatures could climb another 2.5 to 4.5 degrees F within several decades, said John Reilly, co-director of Joint Program on the Science and Policy of Global Change.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
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.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video, chronicles a Chinese village’s fight against a polluting chemical plant. It was nominated for a 2011 Academy Award for Best Documentary Short.
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
, winner of the Yale Environment 360 Video Contest, documents the work of African researchers monitoring wildlife in Uganda's remote Bwindi Impenetrable National Park. Watch the video.