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NASA-led study identifies unprecedented depletion of stratospheric ozone layer above Arctic

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A NASA-led study has documented an unprecedented depletion of Earth’s protective ozone layer above the Arctic last winter and spring caused by an unusually prolonged period of extremely low temperatures in the stratosphere. The same ozone-loss processes occur each winter in the Arctic.

Ozone 186
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Study first to quantify amount of US pollution resulting from Chinese manufacturing for exports

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Dust, ozone and carbon can accumulate in valleys and basins in California and other Western states. —Steve Davis, UC Irvine Earth system scientist and co-author. China’s huge ramp-up of industrial activity in recent years, combined with poor pollution controls, has unleashed often fierce international debates.

Pollution 318
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Field study finds soot particles absorb significantly less sunlight than predicted by models; climate models may be overestimating warming by BC

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Although viewed as a potential target in the global effort to reduce climate change, atmospheric black carbon particles absorb significantly less sunlight than scientists have predicted, according to a new study by an international team of researchers, published in the journal Science. Earlier post.).

Climate 261