2019 ozone hole smallest on record
October 21, 2019
2019 ozone hole smallest on record
Abnormal weather patterns in the upper atmosphere over Antarctica dramatically limited ozone depletion in September and October, resulting in the smallest ozone hole observed since 1982.
Ozone hole modest despite conditions ripe for depletion
November 2, 2018
Ozone hole modest despite conditions ripe for depletion
The ozone hole that forms in the upper atmosphere over Antarctica each September was slightly above average size in 2018, NOAA and NASA scientists reported today.
Warm air helped make 2017 ozone hole smallest since 1988
November 2, 2017
Warm air helped make 2017 ozone hole smallest since 1988
Measurements from satellites this year showed the hole in Earth’s ozone layer that forms over Antarctica each September was the smallest observed since 1988, scientists from NASA and NOAA announced today.
Ozone treaty taking a bite out of US greenhouse gas emissions
August 14, 2017
Ozone treaty taking a bite out of US greenhouse gas emissions
The Montreal Protocol, the international treaty adopted to restore Earth’s protective ozone layer, has significantly reduced emissions of ozone-depleting chemicals from the United States. In a twist, a new study by NOAA and CIRES scientists shows the 30-year old treaty has had a major side benefit - reducing climate-altering greenhouse gas emissions from the U.S.
Possible new threat to Earth’s ozone layer
June 27, 2017
Possible new threat to Earth’s ozone layer
The Montreal Protocol has been hailed for controlling chlorine-based chemicals that created a vast hole in the ozone layer over Antarctica. But new research by British and American scientists suggest a chemical not controlled by the international treaty poses a potential risk to the Earth’s protective ozone layer.
Fifty years ago, a historic balloon launch that changed the way we see the ozone layer
April 27, 2017
Fifty years ago, a historic balloon launch that changed the way we see the ozone layer
What started out as a modest research project driven by scientific curiosity provided the agency that would later become NOAA with some of the first insights into how ozone was distributed in the atmosphere.
Antarctic ozone hole about average in 2016
October 25, 2016
Antarctic ozone hole about average in 2016
The hole in the Earth’s ozone layer that forms over Antarctica each September grew to about 8.9 million square miles in 2016 before starting to recover, according to scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA) who monitor the annual phenomenon.
4 ways the ozone hole is linked to climate, and 1 way it isn’t
October 12, 2016
4 ways the ozone hole is linked to climate, and 1 way it isn’t
To mark the peak of ozone hole season, we’re highlighting four ways that climate and the ozone hole are related—and one important way they aren’t.
NOAA “reels in” data on Utah’s winter ozone problem
September 19, 2016
NOAA “reels in” data on Utah’s winter ozone problem
A deep sea fishing rod is probably not the first tool that comes to mind when thinking about how to study air pollution in a remote inland desert, but it’s the heart of a new NOAA system that has given scientists a minute-by-minute look at how quickly the sun can convert oil and gas facility emissions to harmful ground-level ozone.
Robert (Bob) D. Evans of ESRL Global Monitoring Division receives the prestigious IO3C Farman Award Nomination
July 28, 2016
Robert (Bob) D. Evans of ESRL Global Monitoring Division receives the prestigious IO3C Farman Award Nomination
Robert (Bob) D. Evans of ESRL Global Monitoring Division receives the prestigious IO3C Farman Award Nomination For Sustaining a Long-term Inter-calibrated World-wide Dobson Total Ozone Observing Network. The "Joseph C. Farman Award" is granted to one or more outstanding scientists who have created and used high-quality, long-term time series of atmospheric measurements related to the study of atmospheric ozone and/or surface ultraviolet radiation.
2015 Sets a Record Low for Antarctic Ozone Hole in October
November 20, 2015
2015 Sets a Record Low for Antarctic Ozone Hole in October
NOAA’s measurements of ozone at South Pole registered a record low for the month of October. This year, the average amount of ozone measured by a Dobson instrument at South Pole in the second half of October was 114 Dobson Units (DU), or 60 percent below the pre-ozone hole conditions.
Annual Antarctic Ozone Hole Larger and Formed Later in 2015
October 29, 2015
Annual Antarctic Ozone Hole Larger and Formed Later in 2015
The 2015 Antarctic ozone hole area was larger and formed later than in recent years, according to scientists from NOAA and NASA.
Antarctic ozone hole similar to last year
October 30, 2014
Antarctic ozone hole similar to last year
The Antarctic ozone hole, which forms annually in the August to October period, reached its peak size on September 11, stretching to 9.3 million square miles (24.1 million square kilometers), roughly the same size as last year’s peak of 9.3 million square miles (24 million square kilometers) on September 16, 2013. This is an area similar in size to North America.
Understanding the Ozone Hole - a video designed for high school level students
September 12, 2014
Understanding the Ozone Hole - a video designed for high school level students
The sun rises at the South Pole every Sept 21, after six months of darkness, and the spark of light from the rising sun also starts a season of ozone depletion down south. With the approach of that date in mind, a CIRES/NOAA scientist and videographer has developed a short, educational video that focuses on the ozone research being conducted by NOAA and CIRES scientists.
Encouraging information from this year
October 21, 2013
Encouraging information from this year's observations of the Antarctic ozone hole
For nearly 50 years, scientists with NOAA have launched high-altitude balloons from the South Pole, to understand why a hole was forming in the protective ozone layer high in the atmosphere. Now, organizations around the world track the infamous ozone hole through these ballon-sondes, satellite measurements and ground instruments.