The report provides an overview of what is known about ecological thresholds and where they are likely to occur. It also identifies those areas where research is most needed to improve knowledge and understand the uncertainties regarding them.
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The report provides a review of the current knowledge about global distributions and properties of atmospheric aerosols, as they relate to aerosol impacts on climate. It assesses possible next steps aimed at substantially reducing uncertainties in aerosol radiative forcing estimates.
News (dtd 1 May 2009) from the National Science Foundation.
News (dtd 4 May 2009) from the National Snow and Ice Data Center.
News (dtd 4 May 2009) from the National Oceanic and Atmospheric Administration.
News (dtd 1 May 2009) from the National Aeronautics and Space Administration.
2009 climate change report from the National Science Foundation.