本研究計畫為建構跨國大氣長程輸送模式整合系統，掌握、預警及評估台灣空氣品質及環境受境外輸送之衝擊，提供環保署及地方環保單位進行空氣品質管理決策之參考。並對空氣品質異常偶發事件時，修正空氣品質統計數值。規劃與建立酸雨監測網，並進行長期監測與資料分析，建立酸沈降臨界負荷指標，評估台灣地表環境對酸沈降之緩衝能力，研擬酸雨防制策略。最後將積極推動及參與跨國大氣污染相關議題之國際合作與技術交流，更新與維護台灣酸雨資訊網，強化環境教育與新知傳播。主要成果如下: ● 自動化連結氣象局與美國NCEP每日全球/東亞區域氣象場，並與東亞區域暨台灣之大氣污染物(包括酸雨、沙塵暴及生質燃燒)分布之資料流完成串接工作，該項即時程序將可於每日下午6時前完成。 ● 已提供台灣主要地區之每日的即時後推氣流軌跡，以供研判污染之來源，以及亞洲主要污染源區，如華南、日韓等國，或亞洲沙塵暴與東南亞生質燃燒區域之氣流軌跡圖，以供長程傳送污染物之預警研判。 ● 針對92年度受空氣品質異常事件(例如沙塵暴)影響之空氣品質異常站日數，已利用統計模式加以修正，重新計算空品區之PSI與PM10。 ● 已完成第二代的酸雨監測網之建置共12站，進行酸雨監測，監測項目包括乾沈降及濕沈降。 ● 吾人已評估建立酸沈降臨界負荷指標本土化計算方式，並擬定實施策略。 ● 已進行更新與維護酸雨資訊網頁，提供最新酸雨分布現況。現在本網已登入申請為www.acidrain.org.tw。 ● 推動酸雨研究之區域國際合作或聯繫及參與既有國際酸雨監測網，促進技術交流，建立合作管道。目前已和APARE、EANET與CAD進行雙邊合作。並積極參與區域大氣污染相關議題之國際合作與技術交流，推動日、韓、香港、大陸(及其他有意願之國家)及我國之策略聯盟，並已召開國際酸沉降專家會議，獲致寶貴之意見及資料，未來將朝向環太平洋酸雨監測資訊網而努力。 The goals of this study are (1) to establish an integrated atmospheric modeling system for studying the long-range transport of regional air pollutants in order to predict and assess their impact on Taiwan air quality, and further to provide fundamental information to the EPA and local EPB for air pollution management, (2) to revise the PSI when abnormal air pollution events occur, (3) to plan and establish a new acid deposition net work for conducting a long-term monitoring and data analysis, (4) to develop a localized critical loading of acid deposition for assessing the buffering capacity of the soil in Taiwan, (5) to update and maintain the web site of acid rain study in Taiwan, and (6) to promote regional international collaborations. To date, our achievements are highlighted below: ？？ The modeling system has integrated the meteorological data from CWB and NCEP, and subsequently performed daily simulations. Predicted trajectories originated from the major source points of air pollutants in East Asia have been provided on the website for precaution of the long-range transport. Meanwhile, backward trajectories starting at four locations of Taiwan are also provided for tracking the potential source regions. ？？ Based on a statistic model, the PSI during the abnormal event of the year of 2003 has been recalculated in consideration of Asian dust impact on PM10 measurements ？？ A new acid rain monitoring network consisting of 12 sites has been set up since January 2003 for a long-term measurement of dry and wet deposition. ？？ The web site (http://www.acidrain.org.tw) of Taiwan acid rain study has been updated with more information. ？？ The Experts Workshop on Acid Deposition in East Asia was held in Taipei on 15-17 November 2003. Experts from Japan, Hong Kong, USA, China, and Taiwan agreed to establish a Pacific Rim region network for information sharing and exchange of acid deposition data. Our network is also extended to collaborate with EANET, NADP and CAD. 研究期間：9111 ~ 9212
