HR: 13:55h
AN: U23B-03 INVITED     [Abstracts]
TI: Contribution of Advanced Satellite Imaging Technologies to a Systematic, Integrated Program of Aerosol Observation and Modeling
AU: * Diner, D J
EM: David.J.Diner@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Kahn, R A
EM: Ralph.A.Kahn@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Martonchik, J V
EM: John.V.Martonchik@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Braverman, A J
EM: Amy.Braverman@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Cunningham, T J
EM: Thomas.J.Cunningham@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Wang, Y
EM: Yu.Wang@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Cairns, B
EM: bc25@columbia.edu
AF: Columbia University, 500 W. 120 St., New York City, NY 10027 United States
AU: Chipman, R A
EM: russell.chipman@optics.arizona.edu
AF: University of Arizona, 1630 East University Blvd., Tucson, AZ 85721 United States
AB: Improving our ability to distinguish natural and anthropogenic influences on aerosol climate forcing and air quality requires systematic measurements that can be integrated with predictive models. Satellites provide essential global perspectives on aerosol distributions, microphysical properties, and radiative effects. Certain information, such as details of aerosol chemical composition, cannot be obtained from space. In this paper, we describe a systematic, integrated approach to global aerosol characterization, called the Progressive Aerosol Retrieval and Assimilation Global Observing Network (PARAGON). This concept envisions using modern measurement and modeling techniques, geospatial statistics methodologies, and high-performance information technologies to provide the machinery necessary for achieving a comprehensive understanding of how aerosol physical, chemical, and radiative processes impact the Earth system. One aspect of PARAGON is the establishment of a cohesive long-term aerosol record. In conjunction with chemical transport models, an advanced satellite imager will provide an integrating function to the data from samplers, surface radiometers, and lidars. We present a concept for an instrument whose design goals include microphysical aerosol characterization using spectral coverage from the near-UV to the shortwave infrared; intensity and polarimetric imaging over multiple view angles; sub-kilometer spatial resolution for cloud discrimination and stereoscopic aerosol plume height retrieval; and global coverage within a few days. The most challenging instrument requirement is measurement of the degree of linear polarization with an uncertainty of 0.5% or less. Electrooptic signal processing within a high-reflectance optical design can be used to achieve this objective. The benefits of such an instrument within the PARAGON context include (1) retrieval accuracies that meet stringent climate and environmental requirements on aerosol radiative and microphysical properties, (2) multi-measurement simultaneity, enabling synergistic use of information that has previously been acquired and analyzed only separately, and (3) global imaging to provide three-dimensional constraints on chemical transport models and frequent overflights of surface radiometer, lidar, and in situ sampling networks.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0394 Instruments and techniques
SC: Union [U]
MN: 2005 Joint Assembly