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To: ETL

Need to know what “the recovery of the Antarctica ozone hole” means in English.

Is “recovery” meaning the “closing” of the hole or the expansion of it?

Otherwise, an interesting article and the presence of so many undersea/continent volcanoes means that they have to have some type of influence on the underlying rock formations of the continent, possibly inducing warming under the bottom layers of continental ice.

Meanwhile, all my birds packed their travel bags today and headed for Puerto Rico, figuring that if it was good enough for the Democ-Rats, it was good enough for them. Only they are paying their own way.


18 posted on 01/17/2019 3:12:38 PM PST by MadMax, the Grinning Reaper
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To: MadMax, the Grinning Reaper
Need to know what “the recovery of the Antarctica ozone hole” means in English. Is “recovery” meaning the “closing” of the hole or the expansion of it?

Lol! They probably mean the 'closing' of the hole.

19 posted on 01/17/2019 3:16:10 PM PST by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
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To: MadMax, the Grinning Reaper
What is the Ozone Hole?

The ozone hole is not technically a “hole” where no ozone is present, but is actually a region of exceptionally depleted ozone in the stratosphere over the Antarctic that happens at the beginning of Southern Hemisphere spring (August–October).

Satellite instruments provide us with daily images of ozone over the Antarctic region. The ozone hole image below shows the very low values (blue and purple colored area) centered over Antarctica on 4 October 2004. From the historical record we know that total column ozone values of less than 220 Dobson Units were not observed prior to 1979.

From an aircraft field mission over Antarctica we also know that a total column ozone level of less than 220 Dobson Units is a result of catalyzed ozone loss from chlorine and bromine compounds.

For these reasons, we use 220 Dobson Units as the boundary of the region representing ozone loss. Using the daily snapshots of total column ozone, we can calculate the area on the Earth that is enclosed by a line with values of 220 Dobson Units (the white line in the figure below).

https://ozonewatch.gsfc.nasa.gov/facts/hole_SH.html

20 posted on 01/17/2019 3:18:47 PM PST by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
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