Weather predicting apparatus, and weather predicting method, computer product

• US 20070244644A1
• Filed: 07/20/2006
• Published: 10/18/2007
• Est. Priority Date: 04/13/2006
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Tanahashi, Shuichi
• Granted Patent: US 7,529,623 B2
• Time in Patent Office: Days
• US Class Current: 702/3
• CPC Class Codes: G01W 1/10 Devices for predicting weather conditions computers per se G06; display devices G09

Abstract

A weather predicting apparatus computes predicted values indicative of the weather at predetermined time intervals after a predetermined time point in the past based on each initial value, and compares each predicted value with a corresponding actual value in the past. When the difference between the two is determined to be out of the tolerance, the weather predicting apparatus terminates computation of the initial value so that it will not be used for the prediction.

Claims

1. A computer-readable recording medium that stores therein a computer program that causes a computer to execute:

computing a predicted value indicative of weather at a plurality of time points from a first time point in the past with respect to each initial value;

acquiring actual values actually observed at each of the time points;

comparing the predicted value at any specific time point with an actual value at the specific time point and determining whether a difference between the predicted value and the actual values is within a tolerance;

repeating the comparing for all the time points; and

deleting those initial values for which it is determined at the comparing that the difference is out of the tolerance; and

substituting remaining initial values into a weather prediction model for performing weather prediction at a second time point in future.

2. The computer-readable recording medium according to claim 1, wherein the comparing includes using a wider tolerance if the second time point is farther from current time.

3. The computer-readable recording medium according to claim 1, further causing the computer to execute outputting number of initial values for which it is determined at the comparing that the difference is out of the tolerance.

4. The computer-readable recording medium according to claim 1, further causing the computer to execute:

issuing a warning any one of when number of initial values for which it is determined at the comparing that the difference is out of the tolerance exceeds a first threshold, and when the difference between the predicted value and the actual value exceeds a second threshold.

5. A weather predicting apparatus comprising:

a computing unit that computes a predicted value indicative of weather at a plurality of time points from a first time point in the past with respect to each initial value;

an acquiring unit that acquires actual values actually observed at each of the time points;

a comparing unit that compares the predicted value at any specific time point with an actual value at the specific time point and determines whether a difference between the predicted value and the actual values is within a tolerance; and

a deleting unit that deletes those initial values for which the comparing unit determines that the difference is out of the tolerance; and

a calculating unit that substitute remaining initial values into a weather prediction model for performing weather prediction at a second time point in future.

6. A weather predicting method comprising:

computing a predicted value indicative of weather at a plurality of time points from a first time point in the past with respect to each initial value;

acquiring actual values actually observed at each of the time points;

comparing the predicted value at any specific time point with an actual value at the specific time point and determining whether a difference between the predicted value and the actual values is within a tolerance;

repeating the comparing for all the time points; and

deleting those initial values for which it is determined at the comparing that the difference is out of the tolerance; and

substituting remaining initial values into a weather prediction model for performing weather prediction at a second time point in future.