13.07.2015 Views

大陸沙塵暴氣象條件之分析與建立預警制度之研究 ... - 行政院環境保護署

大陸沙塵暴氣象條件之分析與建立預警制度之研究 ... - 行政院環境保護署

大陸沙塵暴氣象條件之分析與建立預警制度之研究 ... - 行政院環境保護署

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one of the event and false-alarmed the other. The false-alarm case was an event with strong rain scavenging effect, whichwas not considered in the TAQM/dust model at the time. Improvement has been made to include this rainout mechanism.For the event that was missed by the model, an error in coding was made when modifying the model, such that the eventwas actually captured but the order of dust concentration was wrong and is thus counted as a missed case. Correctionshave been made soon after. For the rest of the events, the forecasting model did fairly well on the arrival time, duration,and area extent, but not as satisfactory in the maximum mass concentrations. An overall evaluation of the performance ofour and foreign models was made, and we found that the TAQM/dust model is superior to all other models in forecastingdust events in Taiwan.Key words: Dust storm; atmospheric dust model, Taiwan Air Quality Mode

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