Physics & Astronomy Colloquium
3:30 PM, Thursday, October 16, 2008
Lexmark Room, Main Building
Dr. Michael Mischenko
NASA Goddard Space Research Center
NASA Glory Mission: Fundamental Physics, Societal Benefits, and Taxpayers Money
The NASA Glory Missionsis intended to facilitate and improve upon long-term monitoring of two key forcings influencing global climate. One of the mission principal objectives is to determing the global distribution of detailed aerosol direct and indirect radiative forcings. The other is to continue the 28-year record of satellite based measurements of total solar irradiance from which the effect of solar variability on the Earth's climate is quantified. These objectives will be met by flying two state-of-the-art science instruments on an Earth orbiting platform. Based on a proven technique demonstrated with an aircraft based prototype, the Aerosol Polarimetry Sensor (APS) will collect accurate multi-angle photopolarimetric measurements of the Earth along the satellite ground track within a wide spectral range extending from the visible to the short-wave infrared. The Total Irradiance Monitor (TIM) will provide accurate and precise measurements of spectrally-integrated sunlight illuminating the Earth. This talk will detail the scientific rationale and objectives of the Glory mission, explain how these scientific objectives dictate the specific measurement strategy, adn describe how the measurement strategy will be implemented by the APS and TIM. It is expected that the Glory results will be used extensively by members of the climate, solar, atmospheric, oceanic, and environmental communities as well as in education and outreach activities.
Refreshments will be served at 3:00 PM