2015-11-17. Billions of People Depend on Water From Shrinking Snowpacks.

posted Nov 17, 2015, 10:45 AM by Alan Gould   [ updated Nov 17, 2015, 10:46 AM ]
By SINDYA N. BHANOO, the New York Times. For GSS Climate Change chapter 8. Excerpt: Snowpacks are a vital source of water for humans, but they may shrink in some regions as the climate warms. A new study estimates how changes in s[n]owfall will affect water supplies. Justin S. Mankin, an earth scientist at Columbia University, and his colleagues analyzed 421 drainage basins in the Northern Hemisphere that depend on rainfall and snowmelt, and then combined the data with several different climate models. They found that 97 basins, currently serving two billion people, depend heavily on snowmelt. The scientists calculated that the likelihood the basins would receive less snow in the coming century was 67 percent. ...“Water managers need to prepare themselves for the worst outcome,” Dr. Mankin said. The public can help mitigate threats to snowpacks by limiting contributions of greenhouse gas emissions, he added....  http://www.nytimes.com/2015/11/18/science/billions-of-people-depend-on-water-from-shrinking-snowpacks.html