http://news.yahoo.com/ozone-hole-ove...170117839.html Since the early 1980s, when it was first noticed, a
hole in the ozone layer opens up over Antarctica every year, decreasing ozone concentrations there by as much as 70 percent. The cause is human-produced chlorofluorocarbons (CFCs), which once were heavily used in aerosols and refrigeration.
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Linking the development of Large Ozone Hole to warming over southern Africa. Panel representd the st …
Now, researchers have found that the ozone hole may be linked to warming in southern Africa.
"At first, connecting the two [ideas] appeared quite absurd, and it never occurred to us until we carefully looked at the pointers in the data," said study lead author Desmond Manatsa, a climate scientist at Bindura University of Science in Zimbabwe.
Previously, scientists found that surface air temperatures in southern Africa had risen significantly over the past two decades, mostly in the early summer. Investigators had suggested this heating was due to the global warming caused by human-linked greenhouse-gas emissions changing climate around the planet. However, climate models hinted that global-warming effects from greenhouse gases should not differ between seasons in southern Africa, but instead be uniform throughout the year, Manatsa explained.