New Study Showing Ozone Recovery Hailed as Model for Tackling Climate Crisis

By Jake Johnson

Hailed as an example of how concerted global action can help solve a planetary crisis, a new study conducted by NASA scientists documented the first direct evidence that an international effort to ban chlorofluorocarbons (CFCs) has led to the recovery of the Antarctic ozone hole.

Published in the journal Geophysical Research Letters on Thursday, the study uses satellite observations to demonstrate that the decline in atmospheric chlorine that resulted from the implementation of the Montreal Protocol, enacted in 1989, has led to "about 20 percent less ozone depletion during the Antarctic winter than there was in 2005—the first year that measurements of chlorine and ozone during the Antarctic winter were made by NASA's Aura satellite."

"We see very clearly that chlorine from CFCs is going down in the ozone hole, and that less ozone depletion is occurring because of it," Susan Strahan, an atmospheric scientist from NASA's Goddard Space Flight Center and one of the study's lead authors, said in a statement.

In a video (above) published on NASA's website on Thursday, Strahan explained the significance of the study and why the Montreal Protocol should be celebrated as a great success.

While CFCs and other ozone-depleting substances were phased out by the mid-1990s, the study notes that the Antarctic ozone hole—which was first discovered in 1985—"is healing slowly" because the man-made substances that caused the hole in the first place "have long lifetimes."

Given that fact, researchers believe that it could be several decades before the ozone hole is eliminated altogether.

"CFCs have lifetimes from 50 to 100 years, so they linger in the atmosphere for a very long time," noted Anne Douglass, an atmospheric scientist at Goddard's Space Flight Center and one of the study's co-authors. "As far as the ozone hole being gone, we're looking at 2060 or 2080. And even then there might still be a small hole."

Responding to the study's results on Twitter, Greenpeace called for the success of Montreal Protocol to be used as a model for tackling the climate crisis.

"We've stopped harmful pollutants before and nature has healed itself," the group observed. "Let's cut carbon emissions now and allow nature to heal itself again."

Reposted with permission from our media associate Common Dreams.

Show Comments ()
Airbus, Rolls-Royce and Siemens are developing hybrid electric commercial airplane plane. Airbus

Norway Aims for Electric Planes to Help Slow Climate Change

Norway—home to the world's highest per capita number of all-electric cars—is also planning to go emission-free in the friendly skies.

The Scandinavian country aims to be the first in the world to switch to electric air transport.

Keep reading... Show less
A massive sinkhole in Winkler County, Texas. Google Earth

Large Swath of Texas Oil Patch Rapidly Sinking and Uplifting, Study Finds

West Texas is already home to two giant sinkholes near the town of Wink caused by intensive oil and gas operations. Now, according to an unprecedented study, the "Wink Sinks" might not remain the last in the region.

Geophysicists at Southern Methodist University (SMU) in Dallas have found rapid rates of ground movement at various locations across a 4,000-square-mile swath around the two sinkholes. This area is known for processing extractions from the oil-rich Permian Basin.

Keep reading... Show less

Study Shows Some Pesticides More Bee-Safe Than Others, But Are Any Pesticides Eco-Friendly?

A study published Thursday in Current Biology is being hailed in a University of Exeter press release as a major "breakthrough" in developing bee-friendly insecticides. But some environmentalists think the research is asking the wrong questions to begin with.

Keep reading... Show less
Parks & Wildlife Service, Western Australia / Twitter

More Than 140 Whales Dead After Mass Stranding in Western Australia

More than 150 short-finned pilot whales stranded en masse at Hamelin Bay on the west coast of Australia early Friday morning.

Most of the whales did not survive after beaching themselves, according to Jeremy Chick, incident controller at Western Australia's Parks & Wildlife Service.

Keep reading... Show less
Renewable Energy

Tech Giant Microsoft Signs Largest Corporate Solar Agreement in the U.S.

By Katrine Tilgaard Petersen

Microsoft has announced the single largest corporate purchase of solar power ever seen in the U.S., signing an agreement with sPower to add 315 MW of electricity via two solar projects in Virginia.

Microsoft has been powered by 100 percent renewable electricity since 2014. In 2015, the tech giant joined RE100, a global corporate leadership initiative by The Climate Group in partnership with CDP, now bringing together 130 ambitious companies committed to sourcing entirely renewable power.

Keep reading... Show less

The New Government Omnibus Spending Bill Shows That Science Advocacy Matters

By Yogin Kothari

After a long wait, late Wednesday night, Congress posted a spending agreement for the rest of the 2018 fiscal year. For the most part, we achieved significant victories, especially given the challenging political environment, in repelling proposals that would have directly undermined the role of science in public health and environmental policymaking.

Keep reading... Show less

Pipeline Leaks 42,000 Gallons Into Indiana Stream

Forty-two thousand gallons of diesel spilled from a Marathon Petroleum Corporation pipeline into Big Creek in Posey Creek, Indiana before the leak was detected Tuesday evening, U.S. News & World Report reported Wednesday.

The pipeline was immediately shut off, and workers contained the spill with two booms before it reached the Wabash River.

Keep reading... Show less

Skylines to Switch Off as Millions Connect to the Planet to Celebrate Earth Hour 2018

On Saturday, March 24 at 8:30 p.m. local time, skylines around the world will go dark as millions celebrate WWF's Earth Hour to spark global awareness and action on nature and the environment.

From the Eiffel Tower to the Empire State Building, and the Bird's Nest stadium to Burj Khalifa, thousands of landmarks will switch off their lights in solidarity for the planet, urging individuals, businesses and governments worldwide to move forward the conversations and solutions we need to build a healthy, sustainable future for all.

Keep reading... Show less


The best of EcoWatch, right in your inbox. Sign up for our email newsletter!