That white blanket of snow may look pure, but don’t let it deceive you.
According to a new extensive survey of North America’s snowfall published in the Journal of Geophysical Research, all that fluffy white stuff may not be as pristine as we thought.
University of Washington scientists found regional patterns of impurities contaminating snow caused by dark soot and dirt particles. Questions have arisen as to whether this may actually have an impact on our climate, both globally and locally.
The survey shows that snow covering the countrysides outside of cities, for the most part, is about as pristine as that found in the Arctic. But in some areas, particularly mid-west America, the purity of snow may be more at risk and the source turns out to be of a bit of a surprise.
The project involved collecting snow samples from 67 sites, bringing them back to the laboratory, and carrying out chemical analyses to find contaminants. They zeroed in on the light absorbing black carbon particlesRead More »from Dirty snow may be altering our climate, scientists say