Sentences with phrase «larger snow grain»
But Dumont and her colleagues have found that, since 2009, there has been a darkening that can not be explained by larger snow grain size alone.
http://www.sciencemag.org/ Not exact matches
Third, it can explicitly account for the large displacements and rearrangement of the snow grains during deformation.
At the same time, as the snow melts and refreezes, the grains of snow get larger.
Two properties dominate reflectivity in dry snow — the size of snow grains, which become larger and more absorbent as they melt, and the presence of dark impurities that absorb the sun's energy, predominantly black carbon and mineral dust, which also cause the snow to melt faster.
Scientists have generally attributed that darkening to larger, slightly less white snow grains caused by warmer temperatures.
«When snow first falls, snow grains are quite small, and as snowpack ages, and particularly for warmer snowpack, you get consolidation of those grains into larger clumps,» said Sarah Doherty, a researcher at the University of Washington who co-authored the paper.
The relatively large temperature response is related to positive feedbacks which enhance the initial impact of changed snow grain size.
The first rainfall of the season causes metamorphosis of the snow grains, whereby the snow becomes wet and individual snow grains become larger, which makes the snow less reflective.
The relatively large temperature response is related to positive feedbacks which enhance the initial impact of changed snow grain size.