Method and equipment for weather image prediction

Details Method and equipment for weather image prediction Method and equipment for weather image prediction

1997-12-12

1999-10-26

McElheny, Jr., Donald E.

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

342 26, G06F 1900

Patent

active

059743603

ABSTRACT:
An equipment for weather image prediction comprising: a field extracting portion, which calculates the velocity fields of the local echoes with respect to time and space from a plurality of time sequential frames of weather radar images for a plurality of frames therein, and which segments and extracts a field possessing similar velocities with respect to time and space as one precipitation field from said plurality of frames of weather radar images by employing said calculated velocity fields; a moving velocity estimating portion, which estimates the moving velocity of a precipitation field by obtaining the amount of movement, among the neighboring frames, of the precipitation field segmented and extracted by said field extracting portion; and a forecast image generating portion, which extrapolates a plurality of precipitation fields by employing a distance taken by multiplying the moving velocity of the precipitation field estimated by said moving velocity estimating portion by a desired forecasting time, and which generates a forecast radar image by synthesizing the resulting image.

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Y. Asuma et al., "A Method for Estimating the Advection Velocity of Radar Echoes Using a Simple Weather Radar System", Geophysical Bulletin of Hokkaido University, vol. 44, Oct., 1984, pp. 23-34.
Y. Asuma et al., "Experiments for a Very-short-range Prediction of Snowfall Using a Simple Weather Radar System Part. 1--Outline and Possibility--", Geophysical Bulletin of Hokkaido University, vol. 44, Oct., 1984, pp. 35-51.
K. Otsuka et al., "Precipitation Forecasting Based on Segmentation of Spatiotemporal Velocity Field", Proceedings of the 54.sup.th Annual Convention IPS Japan, May 1997.
K. Otsuka et al., "Precipitation Forecast Based on Segmentation of Radar Echo Motion Field", Proc. AMS Conf. On Radar Meterology, Sep., 1997.

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