Abstract
Some presently methods of quantitative and visual information extraction from geostationary satellite image sequences are demonstrated and discussed by a number of examples.
Experiences in wind extraction, the problems of height assignment and the general quality of cloud-tracked winds will be discussed, particularly for higher latitudes. Spatio-temporal continuity of structures within differential fields, like vorticity and geopotential, as derived from cloud displacement vectors (winds) in these image sequences, are used to demonstrate reasonable accuracy of the wind data for many practical purposes, particularly when use is made of the high temporal density of the data.
Real-time availability of motion scenes from Meteosat by use of modern image processors and display systems provides an excellent means for ultrashort-range local forecasting, “nowcasting”, particularly in case of severe mesoscale weather phenomena - if half-hourly updated real-time motion scenes are supplied as a routine service to local forecasters.
Technical manipulations resulting in a visualisation of motion relative to a translation field (e.g. moving vortex center or front) can reveal impressive details of motion-fields and three-dimensional circulations.
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This work has partly been supported by the Deutsche Forschungsgemeinschaft.
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Warnecke, G., Zick, C., Carus, B., Döring, R., Eriksson, A., Voellger, C. (1987). Information Extraction from Meteorological Satellite Image Sequences. In: Vaughan, R.A. (eds) Remote Sensing Applications in Meteorology and Climatology. NATO ASI Series, vol 201. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3881-6_14
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