Patent Document ID: 20040054476
Application ID: 10433123
Patent Flag: 0

Claim One:
1. A gas status forecast method for obtaining, from meteorological observation data at intervals of a prescribed time at parent grid point positions, meteorological data at intervals of a constant time, which are shorter than the intervals of the prescribed time, at child grid point positions, said parent grid point positions being positions where a plurality of virtual lines, which extend along a north-south direction on the earth's surface and which are spaced from each other in an east-west direction on the earth's surface by a prescribed distance, cross a plurality of virtual lines, which extend along the east-wet direction on the earth's surface and which are spaced from each other in the north-south direction on the earth's surface by a prescribed distance, said child grid point positions being positions where a plurality of virtual lines, which extend along the north-south direction on the earth's surface and which are spaced from each -other in the east-west direction on the earth's surface by a constant distance shorter than the prescribed distance, cross a plurality of virtual lines, which extend along the east-wet direction on the earth's surface and which are spaced from each other in the north-south direction on the earth's surface by a constant distance shorter than the prescribed distance, said gas status forecast method involving solving partial differential equations for analysis of atmospheric phenomena by computations using a parallel computer equipped with a plurality of processing units, and comprising determining initial conditions and boundary conditions from the meteorological observation data at the parent grid point positions within a specific region preset in the earth's surface, incorporating the determined initial conditions and boundary conditions into the partial differential equations, and performing computations according to the partial differential equations to obtain the meteorological data at the child grid point positions within the specific region, said gas status forecast method being characterized by dividing a computation period from start of computation until a predetermined time later into a plurality of divisional computation periods, allocating computations for the respective divisional computation periods to the plurality of processing units, and proceeding with the computations simultaneously and parallelly.