Aerosols A Neglected Factor In Arctic Global Warming, Says Study

The great thing about science is that we will converge on the correct answer eventually.  In something like climate change, there is rarely one correct answer and while greenhouse gases have long been center stage in discussions about global climate change, new NASA research suggests that much of the atmospheric warming observed in the Arctic since 1976 may be due to changes in tiny airborne particles called aerosols. That doesn't mean mankind is off the hook.   Aerosols are emitted by both natural and human sources and, regardless of where they come from, they can directly influence climate by reflecting or absorbing the sun's radiation. The small particles also affect climate indirectly by seeding clouds and changing cloud properties, such as reflectivity. read more

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