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Author Omar, Ali H. ♦ Winker, David ♦ Won, Jae-Gwang
Source CiteSeerX
Content type Text
File Format PDF
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Group Global Atmospheric Aerosol ♦ Rural Background ♦ Fine Mode ♦ Continental Aerosol ♦ Aerosol Type ♦ Aerosol Robotic Network ♦ Aerosol Size Distribution ♦ Biomass Burning ♦ Aerosol Model ♦ Sea Experiment ♦ Urban Industrial Pollution ♦ Microphysical Property ♦ Coarse Mode ♦ Microphysical Parameter ♦ Dirty Pollution ♦ Polluted Dust Model ♦ Inversion Algorithm ♦ Marine Aerosol ♦ Calipso Aerosol Model ♦ Desert Dust ♦ Calipso Lidar Inversion Algorithm ♦ Optical Property ♦ Cloud Aerosol Lidar ♦ Complex Refractive Index ♦ Imager Pathfinder Spaceborne Observation ♦ Six Significant Cluster ♦ Radiance Measurement ♦ Cluster Analysis
Description We use measurements and models to develop aerosol models for use in the inversion algorithms for the Cloud Aerosol Lidar and Imager Pathfinder Spaceborne Observations (CALIPSO). Radiance measurements and inversions of the AErosol RObotic NETwork (AERONET1, 2) are used to group global atmospheric aerosols using optical and microphysical parameters. This study uses more than 105 records of radiance measurements, aerosol size distributions, and complex refractive indices to generate the optical properties of the aerosol at more 200 sites worldwide. These properties together with the radiance measurements are then classified using classical clustering methods to group the sites according to the type of aerosol with the greatest frequency of occurrence at each site. Six significant clusters are identified: desert dust, biomass burning, urban industrial pollution, rural background, marine, and dirty pollution. Three of these are used in the CALIPSO aerosol models to characterize desert dust, biomass burning, and polluted continental aerosols. The CALIPSO aerosol model also uses the coarse mode of desert dust and the fine mode of biomass burning to build a polluted dust model. For marine aerosol, the CALIPSO aerosol model uses measurements from the SEAS experiment 3. In addition to categorizing the aerosol types, the cluster analysis provides all the column optical and microphysical properties for each cluster.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 2004-01-01
Publisher Institution in Laser Radar Technology for Remote Sensing, Proc. SPIE, 5240, Christian Werner, Editor, Deutsches Zentrum fuer Luftund Raumfahrt