亞洲地區是目前公認人為汙染物及自然過程排放汙染物的主要排放源區之一，人為的排放物主要為碳氫化合物、氮氧化合物、一氧化碳、硫化物、懸浮微粒，及其他稀有性氣體。自然過程的排放來源主要為沙漠地區的沙塵，生機植物燃燒所釋放到大氣的汙染物及懸浮微粒。因此，整體大環境的背景是：無論東亞地區的國家，或者是國內本身的經濟成長所需，我國空氣品質的發展和未來的變化將同時受到來自國內和境外移入空氣汙染物的影響。在2007 年的工作裡，我們已成功的開發完成wrfchem 模式來作為新一代的即時空氣污染預報系統。wrfchem 模式已在2007 年成功地運作將近一年的時間。在這段期間， wrfchem 每日都對台灣及東亞地區進行4 天96 小時的即時空氣污染預測，這些預測結果都被即時的上傳至研究計畫網站，並與環保署後來的觀測結果進行校驗。這些將近一年來的作業顯示wrfchem 對於預測東亞地區空氣污染物的傳送有很高的作業應用價值。因此在2008 年的工作裡，我們將持續的使用wrfchem，進行每日7 天168 小時逐時的台灣及東亞地區空氣污染預測。這些預測結果將迅速的上傳至計劃網站，以提供環保署即時的進行評估及施政參考之用。 ; Asian regions are predicted as one of the major sources for the emissions of anthropogenic and natural pollutants into the atmosphere in the 21st century. Since Taiwan is located in the intersection between the Asian continent and the Pacific, Taiwan is influenced by the continental outflows, originated from inside Asian continent, and the oceanic air masses, respectively. In 2007, we have successfully developed and used the WRFCHEM model as a new generation of the chemical weather system for East Asia and Taiwan. The new WRFCHEM model has been successfully in on-line daily operation since December 2006. During this period, each day the WRFCHEM model conducts a 4-day (96-hours) of hourly air pollutions over Asia and Taiwan regions. These daily prediction results have all been uploaded to the project homepage for real-time on-line visualization and assessment of local and regional air pollution potential for the next 96 hours. These results are also compared with the ambient measurements from the Environmental Protection Administration (EPA) stations to validate the performance of the WRFCHEM model. From these one-year, real-time, and daily 96-hour WRFCHEM air pollution predictions we find that large-scale long-range of pollutants play a significant role during the winter, spring, and fall months. Given the current configuration of the WRFCHEM model we used for this work, the model is reliable at predicting long-range transport of ozone from upstream areas to Taiwan. As such, we plan to use the WRFCHEM model to conduct an operational one-year daily 7-day air pollution prediction experiment in 2008. Such operational experiment can provide valuable information on the prediction of the long-range transport of ozone over East Asia. ; 研究期間 9702 ~ 9712
