Ironic isn't it (The Glory Aerosol Polarimetry Sensor)-the one instrument that could have answered many of the needed answers about aerosols possible origins and climatic effects was a Raytheon project . . . and . . . was somehow lost by a failed launch!!! What are the odds?????
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Raytheon’s Aerosol Polarimetry Sensor

Raytheon’s Aerosol Polarimetry Sensor (APS) will measure aerosols in Earth’s atmosphere to provide scientists and policy makers a better understanding of how those aerosols affect global climate change. 

“The Glory Aerosol Polarimetry Sensor can distinguish between various types of aerosols and reveal the different role each plays in either warming or cooling our planet,” said Bill Hart, vice president, Space Systems. “Since black carbon aerosols generally contribute to warming, and sulfate aerosols to cooling, the concentrations of these aerosols and others must be determined to ensure accurate climate modeling.”

Both natural and man-made aerosols are important constituents of the atmosphere that affect global temperature. Yet they remain poorly quantified and, according to NASA scientists, represent the largest uncertainty regarding climate change.


[link to www.raytheon.com]

On 4 March 2011, the Aerosol Polarimetry Sensor (APS) was lost as a consequence of the failed launch of the Glory Mission. On 6 March 2011, Dr. Michael Freilich, Director of the Earth Science Division, Science Mission Directorate, NASA Headquarters, directed the Glory APS Science Team to perform a comprehensive study intended to develop and evaluate the science rationale for an APS reflight.
[link to glory.giss.nasa.gov]