New Zealand glaciers turn brown from Australian bushfires' smoke, ash and dust
By Eleanor Ainge Roy
Snow and glaciers in New Zealand have turned brown after being exposed to dust from the Australian bushfires, with one expert saying the incident could increase glacier melt this season by as much as 30%.
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There are more than 3,000 glaciers in New Zealand and since the 1970s scientists have recorded them shrinking by nearly a third, with current estimates predicting they will disappear entirely by the end of the century.
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[Professor Andrew Mackintosh, head of the school of earth, atmosphere and environment at Monash University] said the whiteness of snow and ice reflected the sun’s heat, and slowed melting. But when this whiteness was obscured the glacier could melt at a faster rate.
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The recent smoke haze drifting over New Zealand is the fourth such event this summer, the Met Service said, and despite no official health warnings being issued, many with asthma said they were choosing to remain indoors during the unusual conditions.
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