The 2-degree goal and the question of geoengineering

With world leaders agreeing to try to limit the increase in global temperatures, scientists at the National Center for Atmospheric Research (NCAR) are taking a look at whether geoengineering the climate could counter enough warming to help meet that goal. "One thing that surprised me about this study is how much geoengineering it would take to stay within 2 degrees if we don't start reducing greenhouse gases soon," said ACOM scientist Simone Tilmes, the lead author.

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http://www2.ucar.edu/atmosnews/just-published/122687/2-degree-goal-and-question-geoengineering
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ACOM | Atmospheric Chemistry Observations & Modeling