Analysis and Interpretation of Simultaneous Multi-Station Whole Sky Imagery
1991
Johnson, Richard W. | Shields, Janet E. | Koehler, Thomas L.
This report summarizes the development and use of a digital data base containing approximately 900 Gigabytes of raw image data and about 675 Gigabytes of processed data. These images represent 4614 data days geographically distributed among seven CONUS sites; they reside on approximately 900 eight- millimeter tape cassettes. The imagery was acquired by an automatic, computer controlled, electronic camera system previously developed and described in GL- TR-89-0061, Johnson, et al (1989). In addition to the data base summary, this report discusses selected aspects of the overall data processing procedures, the physical nature of the tape archive, the development of the automatic cloud decision algorithm, and several resultant applications of the data to comparative studies and model development. The imagery yields statistical and specific case study representations which compare well with the classical observational formats reported by weather stations personnel. The numerical data have served as preliminary inputs and conceptual baselines leading to the development of new stochastic modeling techniques (Hering 1989, 1990).
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