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題名 | 探討土地利用形態對珠江口沿岸地區氣象模擬的影響:高污染事件日之個案分析=A Numerical Study to Understand the Effects of High Resolution Land Use Data on Meteorological Simulation Results near Pearl River Delta: Application for a High Ozone Episode |
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作者姓名(中文) | 陳嘉華; 吳至翔; 鄭芳怡; | 書刊名 | 航測及遙測學刊 |
卷期 | 17:3 2013.11[民102.11] |
頁次 | 頁221-235 |
分類號 | 445.63 |
關鍵詞 | 珠江三角洲; 土地利用型態; 海陸風; Pearl River Delta; Land use type; Land-sea breeze; |
語文 | 中文(Chinese) |
中文摘要 | 珠江三角洲位於中國華南沿岸,近年來由於經濟、工業與基礎建設的快速發展,當地的空氣品質與氣候的改變也倍受觀注。澳門屬於珠江三角洲沿海城市之一,人口密度位居世界城市排名之首。本研究使用中尺度氣象模式(WRF)模擬2007年10月24日至26日期間,高臭氧濃度事件日之氣象環境,並使用2007年MODIS衛星反演之土地利用型態資料,以更新及改善現有WRF氣象模式所提供之下邊界環境,進而探討事件日之成因。模擬結果顯示,珠江口附近沿岸地區由於盛行東北風與午後之海陸風在珠江口區域形成低風速帶,並由後推軌跡與粒子排放的分析,發現污染物主要的來源與午後低風帶的相關性。 |
英文摘要 | Pearl River Delta (PRD) is located in southern China near the coastline. Through the last two decades, PRD region has experienced the unprecedented land-use and land-cover changes as a result of rapid economic development and urban expansion. Its possible impact on regional air quality and climate change is a major concern of the national government as well as the global community. In this study, Weather Research and Forecasting (WRF) meteorological model is performed using the updated land use data for a high ozone event (October 24 to 26, 2007). The land use data is reclassified and updated using the 500-m resolution Moderate Resolution Imaging Spectroradiometer (MODIS) satellite products. Analysis of the wind field simulation result demonstrated that the see-breeze flow direction is opposite to the prevailing wind (1300 to 1800 LST) that forms a stagnant wind condition near the Macao and Pearl River Estuary region. The trajectory analysis showed that the ozone concentration was transported from the source area in the Guang-Dong province. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。