Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
Artificial Intelligence has Great Strength in the Interpretation of Geodata
Potsdam, Frankfurt/Main, September 20, 2018. Everyone’s talking about artificial...
Map of the Month: Purchasing Power for Watches and Jewelry, Italy 2017
GfK's Map of the Month for September illustrates the...
Forward to the Moon: Airbus Wins ESA Studies for Future Human Base in Lunar Orbit
Bremen, 20 September 2018 – The European Space Agency...
Bluesky and Getmapping Win UK Gov Contract
Aerial mapping companies Bluesky and Getmapping are pleased to...
Mobile Mapping Market to Surpass $40bn by 2024: Global Market Insights, Inc.
The research report "Mobile Mapping Market Size, By Component...

The images above represent the typical method of gauging the ozone hole. They show the extent (the geographic area covered) and the depth (the concentration of ozone from top to bottom in the atmosphere) as measured by Aura’s Ozone Monitoring Instrument. Blues and purples represent the lowest ozone levels. Each image shows the day of maximum extent—when the ozone hole was largest that year.

The holes in the ozone layer over Antarctica in 2011 and 2012 are a study in contrasts. The 2011 hole ranked among the 10 largest recorded since the 1980s, whereas the 2012 hole was the second smallest.

But an area view doesn’t tell the whole story, as it says nothing about the chemistry or atmospheric dynamics that give the hole its shape. And if we don't know why the size and depth of the hole varies, it is impossible to know if policies meant to reduce ozone depletion are having an impact.

The Antarctic ozone hole forms in the southern spring when chlorine and other ozone-depleting chemicals interact with sunlight to destroy ozone. It would be easy to assume that a larger ozone hole means more chemicals were present, but the real picture is more complicated.

Image courtesy of NASA.

Read the full story.

Comments are closed.