According to a 2007 research project, the current atmospheric theories regarding depletion of the Earth's ozone 'layer' at the poles only account for around 40% of the actual depletion as measured by NASA. See: Is a major fraction of polar ozone loss due to a currently unknown mechanism ? (Alfred Wegener Institute for Polar and Marine Research, Potsdam, Germany)
An article covering the anomaly was published in Nature: Chemists poke holes in ozone theory , Nature 449, 382-383.
The research results were not universally accepted by climate scientists.
There were also reports of large-scale emissions of undeclared (i.e. banned) ozone-destroying gases used for refrigeration, which had been overlooked.
Also see :
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