Thunder cloud observation system
First Claim
1. A thunder cloud observation system comprising:
- an arithmetic operation unit for calculating a vertical direction accumulated water content from echo strength data obtained from a climate radar, and calculating an echo peak temperature with reference to altitude-temperature comparison data which is based on high altitude climate data;
an area determination portion for determining a precipitation area from said vertical direction accumulated water content and determining a thunder cloud area generated within the precipitation area from said echo peak temperature; and
an identification/tracking process unit for identifying/tracking the thunder cloud area determined by the area determination unit,wherein said area determination unit judges an area in which said vertical direction accumulated water content is less than a reference value, to be a cloud-free area, an area in which said water content is at the reference value or higher, to be a precipitation area, and an area within the precipitation area in which an echo peak temperature is at the reference value or less, to be a thunder cloud area.
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Accused Products
Abstract
In the thunder cloud observation system of the present invention, the vertical direction accumulated water content (VIL) is calculated by the VIL arithmetic operation unit from echo strength data obtained by the climate radar, the echo peak temperature is obtained by the echo peak temperature arithmetic operation unit with reference to altitude-temperature comparison data on the basis of high atmospheric climate data, the precipitation area is determined by the area determination unit from the VIL data, and the thunder cloud area generated within the precipitation area is identified from the echo peak temperature data. The thunder cloud area determined by the area determination unit is subjected to the correlation processes in terms of distance and overlapping area by the identification/tracking process unit, thus performing the identification/tracking, and the results of the processes of the area judgment unit and the identification/tracking process unit are displayed in the image display unit. Therefore, even a thunder cloud area regionally generated within a cloud expanding at a relative low altitude can be identified, and the area thereof can be detected and tracked.
35 Citations
6 Claims
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1. A thunder cloud observation system comprising:
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an arithmetic operation unit for calculating a vertical direction accumulated water content from echo strength data obtained from a climate radar, and calculating an echo peak temperature with reference to altitude-temperature comparison data which is based on high altitude climate data; an area determination portion for determining a precipitation area from said vertical direction accumulated water content and determining a thunder cloud area generated within the precipitation area from said echo peak temperature; and an identification/tracking process unit for identifying/tracking the thunder cloud area determined by the area determination unit, wherein said area determination unit judges an area in which said vertical direction accumulated water content is less than a reference value, to be a cloud-free area, an area in which said water content is at the reference value or higher, to be a precipitation area, and an area within the precipitation area in which an echo peak temperature is at the reference value or less, to be a thunder cloud area. - View Dependent Claims (2)
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3. A thunder cloud observation system comprising:
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an arithmetic operation unit for calculating a vertical direction accumulated water content from echo strength data obtained from a climate radar, and calculating an echo peak temperature with reference to altitude-temperature comparison data which is based on high altitude climate data; an area determination portion for determining a precipitation area from said vertical direction accumulated water content and determining a thunder cloud area generated within the precipitation area from said echo peak temperature; and an identification/tracking process unit for identifying/tracking the thunder cloud area determined by the area determination unit, wherein said identification/tracking process unit carries out an identification/tracking of a thunder cloud area obtained for each radar observation by a correlation process in terms of distance and a correlation process in terms of overlapping identified cloud areas. - View Dependent Claims (4)
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5. A thunder cloud observation system comprising:
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an arithmetic operation unit for calculating a vertical direction accumulated water content from echo strength data obtained from a climate radar, and calculating an echo peak temperature with reference to altitude-temperature comparison data which is based on high altitude climate data; an area determination portion for determining a precipitation area from said vertical direction accumulated water content and determining a thunder cloud area generated within the precipitation area from said echo peak temperature; and a development/decline state judgment unit for judging a possibility of striking a thunderbolt by judging a development/decline period of the thunder cloud area determined by the area determination unit, wherein said area determination unit judges an area in which said vertical direction accumulated water content is less than a reference value, to be a cloud-free area, and an area in which said water content is at the reference value or higher, to be a precipitation area, and determines a thunder cloud area generated in the precipitation area, which is finely divided in a plurality of portions by comparing the echo peak temperature within the precipitation area with a plurality of reference temperatures; and said development/decline state judgment unit extracts a developing nucleus portion having a high echo strength and a high echo peak temperature from the thunder cloud area divided in a plurality of portions in said area determination unit, judges each of the finely divided position of the thunder cloud area separately whether it is in development or decline state from the chronological data obtained for each one of the nuclei, and determines a time and a position where there is a high possibility of striking of a thunder bolt from the development/decline judgment. - View Dependent Claims (6)
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Specification