NASA reports that the ozone hole
totaled just 20 million square kilometers in October 2017, its smallest extent in three decades.
Two years after the discovery of the Antarctic ozone hole
in 1985, nations of the world signed the Montreal Protocol on Substances that Deplete the Ozone Layer, which regulated ozone-depleting compounds.
But we're not yet seeing a clear decrease in the size of the ozone hole
because that's controlled mainly by temperature after mid-September, which varies a lot from year to year," she added.
The reduction of the ozone hole
is due to storms in the upper atmosphere that have warmed it and have prevented chlorine and bromine from depleting the ozone.
NOAA and NASA collaborate to monitor the growth and recovery of the ozone hole
When the ozone hole
was discovered in 1984, the global community acted quickly, enacting the 1987 Montreal Protocol just three years later.
Last October, the ozone hole
reached a record-setting average size of 25.
2, 2015, the ozone hole
expanded to its peak of 28.
This shows us that the ozone hole
problem is still with us and we need to remain vigilant.
Lu aims to show how basic physical principles can be applied to solve vital and challenging problems concerning the ozone hole
and global climate change.
Declining chlorine levels in the stratosphere haven't yet led to the recovery of the ozone hole
that forms annually over Antarctica, according to two new NASA studies.
The ozone hole
that forms each year in the stratosphere over Antarctica was slightly smaller in 2013 than average in recent decades, according to NASA satellite data.
TEHRAN (FNA)- The findings of a new computer-modeling study suggested that the ozone hole
might actually have a slight warming influence, but because of its effect on winds, not temperatures.
com)-- The Ozone Hole
Inc has launched The 2012 Ozone Hole
Campaign on Indiegogo.
With the opening of the ozone hole
over the South Pole due to chlorofluorocarbon pollution, there was severe cooling instead of warming, which eventually caused a southern shift in the winds that whip from west to east around Antarctica.