Climate Change

Share |

Rising CO2 Promoting Desert 'Greening'

July 8, 2013; 2:11 PM ET

Increased levels of carbon dioxide (CO2) over the past 30 years have caused an 11 percent increase in foliage over arid regions of North America, Australia, Africa and the Middle East, according to researchers from the Commonwealth Scientific and Industrial Research Organization (CSIRO) from Australia.

The image below is satellite data that shows the percent amount that foliage cover has changed around the world from 1982 to 2010. Note the biggest increases are in the arid regions of western North America, Africa and western Australia. Image courtesy of CSIRO.

This process, also known as CO2 fertilization, occurs where elevated CO2 enables a leaf during photosynthesis, the process by which green plants convert sunlight into sugar, to extract more carbon from the air or lose less water to the air, or both, according to the CSIRO press release.

The elevated CO2 causes individual leaves of a plant to use less water, thus plants in arid regions will respond by increasing their total number of leaves, according to the report.

Scientists have long known the effects of CO2 on foliage, but until now it has been difficult to demonstrate, according to CSIRO research scientist Dr. Randall Donohue.


This study was published in the U.S. journal Geophysical Research Letters.

The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or


Comments left here should adhere to the Community Guidelines. Profanity, personal attacks, and spam will not be tolerated.

More Climate Change

  • Clouds are trending higher into the atmosphere

    July 11, 2016; 3:36 PM ET

    New research from the Scripps Institution of Oceanography at the University of California (San Diego) confirms what computer modeling had earlier predicted in regards to the impact of climate change on clouds and mid-latitude storm tracks.

About This Blog

Climate Change
In the Climate Change Blog, you will find links to the latest research, commentary by experts with various points of view on all aspects of global climate change.