本研究利用個人電腦所架構之個人電腦叢集PC Cluster平行計算環境,使用Linux作業系統的個人電腦,與平行化運算MPI(Message Passing Interface)之函式庫,架構一個高速計算環境,進行跨領域研究,利用大氣物理方程的大氣模式(MM5)和化學反應機制的空氣品質模式(Models-3/CMAQ)網格數值模式進行生質燃燒空氣污染物傳輸過程之研究。 本研究以中尺度大氣模式(MM5)與大氣化學模式(CMAQ)為主要工具,來探討2010年3月至4月春季7SEAS密集觀測期間,生質燃燒案例日台灣空氣品質變化的成因。以模式模擬結果配合恆春觀測資料作解析,進行比對分析。由此探討長程傳輸時氣候及氣象因子的分析與應用,並可強化目前在大氣環流及大氣化學對東亞地區長程傳輸的科學依據,達成瞭解氣膠、氣象和氣候間的交互作用。 研究發現,選擇2010年生質燃燒案例日進行模式模擬,模式模擬結果東亞生質燃燒污染物在當地向上擴散後,會藉由高層500hPa和700hPa的西南風和西風向北與東方傳輸,在中緯度地區鋒面系統的影響下,會向下沖刷至近地表傳至台灣地區。配合2010年的恆春觀測資料顯示,東亞生質燃燒的確會藉由此種傳輸過程影響台灣的空氣品質。
This study used a PC cluster with operating system Linux and a parallel library Message Passing Interface(MPI) to building of high-speed parallel environment for cross-disciplinary research. The PC cluster is designed for running meteorological model (MM5) and the air quality which constructed around the full set of primitive dynamical equations to govern atmospheric motions and chemical mechanism. Transportation mechanism of East Asian biomass burning is the scientific goal of this research, MM5 and CMAQ simulate the aerosol variation over East Asia region during spring in 2010. Model simulations results with observation data in Hengchun is used to analyzing the long-range transportation processes of biomass burning especially CO, CO is the main spicy to understand the evolution of biomass burning under the different atmospheric circulations in East Asia. The results indicated the East Asian biomass burning pollutants diffused and transported upward in the local emission areas, then transported horizontally to the north and East by southwest and west winds in high-level between 500 hPa and 700 hPa. Under the influence of frontal system in the mid-latitude, it will be down washed and then spread to Taiwan. The simulation results with Hengchun observation in 2010 shows that biomass burning in East Asia will indeed affect Taiwan's air quality by such transmission process.