Ozone

calbuco eruption expanded ozone hole to record size study

Calbuco's eruption expanded ozone hole to record size

A new study argues that eruption of the Chilean volcano Calbuco on April 22, 2015 stretched the Antarctic Ozone Hole, the thinnest portion of the ozone shell that shields Earth from harmful radiation, to a record size nearly as large as Africa. It did so by ejecting...

March 15, 2017

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Troposphere ozone pollution highest near the equator

A new research, conducted by the University of North Carolina (UNC), shows the pollution emissions are increasing in the area close to the equator where they produce a much greater impact on the ozone formation. The air pollution across the globe has increased since...

November 08, 2016

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Antarctic ozone hole shows signs of healing

An international team of scientists has observed first clear signs that the hole in the Antarctic ozone layer is beginning to close. Led by Professor Susan Solomon of the Massachusetts Institute of Technology, the team found that the September ozone hole had shrunk...

July 01, 2016

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Strong ozone depletion expected over Arctic in the coming weeks

POLSTRAC campaign initiated by the Karlsruhe Institute of Technology (KIT) was actively engaged in measurements in Arctic since the end of 2015. The research team has observed vertically extended polar stratospheric clouds, in unusually low regions of the...

February 18, 2016

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Ozone hole behind colorful nacreous clouds over the UK and Ireland

Polar stratospheric clouds (PSCs) are appearing over the United Kingdom and Ireland since January 31, 2016. An extremely rare occurrence for this area, usually restricted to the Arctic Circle, has been photographed by numerous skywatchers. According to experts, the...

February 05, 2016

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The 2015 ozone hole over Antarctic larger than usual and late

The annual Antarctic ozone hole was larger than usual this year and formed later than in recent years, according to the scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA). The ozone hole reached its maximum on October 2, 2015,...

October 31, 2015

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A sharp decline in concentration of ozone destroying HCFC-133a gas reported

A new study lead by Martin Vollmer of the Swiss Federal Laboratories for Materials Science and Technology has found that after a rapid increase in anthropogenic compound named HCFC-133a (CF3CH2Cl), an ozone destroying gas, the atmospheric abundance and emissions...

October 06, 2015

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Possible outbreak of polar stratospheric clouds underway around the Arctic Circle

A possible outbreak of polar stratospheric clouds (PSCs) is underway around the Arctic Circle, SpaceWeather.com reports.Ivar Marthinusen sends this picture of the phenomenon taken on December 22, 2014 from Skedsmokorset, Norway:"Right after sunset, these clouds wer

December 23, 2014

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2014 ozone hole update

According to scientists from NASA and NOAA, the Antarctic ozone hole reached its annual peak on September 11 with the size of 24.1 million square kilometers (93 million square miles). Overall, the 2014 ozone hole is smaller than the large holes of the 1998–2006 pe

October 31, 2014

Ozone

World Ozone Day 2014

September 16, 2014 - The World Ozone Day, is meant to commemorate the success that has been achieved in ameliorating ozone depletion since the enactment of the Montreal Protocol, but also to bring attention to the work ahead. In their first review in four years on

September 16, 2014

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Increased SO2 emissions from Holuhraun eruption site can pose health risk and affect global climate change

Earth has split open between the Bardarbunga and Askja volcanoes in Iceland and spewed lava and hot gas. According to the University of Iceland, as of September 9, 2014, the new lava flow was 16 kilometers (10 miles) long and covered about 20 square kilometers (8

September 12, 2014

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Unexpectedly large amount of ozone-depleting compound present in Earth's atmosphere

New NASA research shows that Earth's atmosphere contains an unexpectedly large amount of an ozone-depleting compound - Carbon tetrachloride (CCl4) -  from an unknown source decades after the compound was banned worldwide.Carbon tetrachloride was regulated

August 22, 2014

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Newly detected ozone depleting substances in the atmosphere

Four gases contributing to the destruction of the ozone layer were identified in the atmosphere. All four of them have been released into the atmosphere recently. Scientists at the University of East Anglia made the discovery by

March 14, 2014

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Antarctic ozone hole reaches maximum size for 2013

Each year for the past few decades during the Southern Hemisphere spring, chemical reactions involving chlorine and bromine cause ozone in the southern polar region to be destroyed rapidly and severely. This depleted region is known as the “ozone

October 21, 2013

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Ozone thinning has influenced ocean circulation

The hole in the Antarctic ozone layer has caused changes in the way that waters in those southern oceans mix, which has the potential to alter the amount of CO2 in the atmosphere and eventually could have an impact on global climate change, according to earth scientist

February 05, 2013