Publication Abstracts

Mishchenko et al. 2007

Mishchenko, M.I., B. Cairns, G. Kopp, C.F. Schueler, B.A. Fafaul, J.E. Hansen, R.J. Hooker, T. Itchkawich, H.B. Maring, and L.D. Travis, 2007: Accurate monitoring of terrestrial aerosols and total solar irradiance: Introducing the Glory mission. Bull. Amer. Meteorol. Soc., 88, 677-691, doi:10.1175/BAMS-88-5-677.

The NASA Glory Mission will support the U.S. Climate Change Science Programand is intended to continue and improve upon long-term monitoring of two key forcings influencing global climate. One of the mission principal objectives is to determine the global distribution of detailed aerosol and cloud properties with unprecedented accuracy, thereby facilitating a reliable quantification of the aerosol direct and indirect effects on climate. The other is to continue the 28-year record of satellite-based measurements of total solar irradiance and thereby enable the quantification of the effect of solar variability on the Earth's climate. 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) is an improved version of an instrument currently flying on the SOlar Radiation and Climate Experiment (SORCE) and will provide accurate and precise measurements of spectrally-integrated sunlight illuminating the Earth. Since Glory is expected to fly as part of the A-Train constellation of Earth-orbiting spacecraft, the APS data will also be used to improve retrievals of aerosol climate forcing parameters and global aerosol assessments with other A-Train instruments. In this paper, we detail the scientific rationale and objectives of the Glory mission, explain how these scientific objectives dictate the specific measurement strategy, describe how the measurement strategy will be implemented by building and flying the APS and TIM, and briefly outline the overall structure of the mission. It is expected that the Glory results will be used extensively by members of the climate, solar, atmospheric, oceanic, and environmental research communities as well as in education and outreach activities.