Temporal Display of Meteorological Satellite Imagery on a Static Full Color Display System

摘要

Full color image processing systems are becoming more prevalent in the meteorological community. Aside from the usual capability for display of grey scale and pseudo-color imagery, these full color systems can be used to create false color representations of multispectral imagery. This paper describes a simple technique to extend the display of meteorological imagery on a full color systems from the spectral domain to the temporal domain. This technique is applied to imagery from the Geosynchronous Operational Environmental Satellite (GOES) Visible Infrared Spin Scan Ratiometer Atmospheric Sounder (VAS). Three consecutive images are co-registered and each image is used to drive one of the three color guns of the display. The resultant image is a grey scale image in regions where there is no change to the scene brightness with time, and a color tinted image where the scene brightness changes with time. For example, if the oldest image were in the red plane, the next image in the green plane, and the newest image in the blue plane, the advancing edge of a well developed frontal system would appear blue, and the retreating edge would appear red. Similarly, a developing cumulonimbus would appear to have concentric circles of white, red, green, and blue. Potential applications of this techniques include display of temporal changes without having to animate imagery. It is very difficult to publish images in the literature demonstrating temporal changes, since in performing the research the author usually animates this imagery at workstation. Now the temporal changes can be displayed in color domain for representation on a static display. It is even possible to perform cloud tracking on a static display. Reprint. (fr)