Daily Archives: January 11, 2009

GISS summary of Aerosol direct, indirect, and BC albedo effects

Aerosols have played a large role in climate change over the 20th century and have partially offset greenhouse gas warming, leading to a net warming that is smaller than a purely GHG-forced 20th century climate change. They affect climate though their direct ability to reflect shortwave radiation, but also through their indirect influence on cloud cover. A recent study (in press) by some folks at GISS using ModelE have published on aerosol effects from 1890-1995 and I’ll summarize some of their work:

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