| 长三角地区典型PM2.5污染过程和跨区域传输对宁波污染贡献评估模拟 |
| 摘要点击 3855 全文点击 2796 投稿时间：2022-01-20 修订日期：2022-05-31 |
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| 中文关键词 PM2.5 重污染 数据值模拟 NAQPMS模式 区域传输 源解析 |
| 英文关键词 PM2.5 heavy pollution numerical simulation NAQPMS model regional transport source apportionment |
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| 中文摘要 |
| 利用WRF模式和嵌套网格空气质量模式（NAQPMS）对长三角地区2015年1月一次典型PM2.5区域重污染事件进行数值模拟.结果表明，NAQPMS模拟再现了长三角地区PM2.5重污染的发展过程，外来区域污染输送是导致长三角地区发生重污染的一个重要因素，主要受3条通道传输影响：内陆（河南-安徽-江苏）通道、沿海（京津冀-山东-江苏）通道和海洋（京津冀-山东-黄海-江苏）通道.以宁波为对象评估污染跨区域输送贡献的解析结果表明：污染发生阶段以沿海通道输送为主，外来区域输送江苏贡献率较大（36.51%）；重污染阶段以内陆通道和海洋通道为主，主要外来区域贡献为浙江北（25.55%）、安徽（12.33%）和海洋（16.92%）；污染消散主要受海洋通道影响，外来输送主要为江苏（14.74%）和海洋（31.43%）. |
| 英文摘要 |
| The weather research and forecasting model (WRF) and the nested air quality prediction model system (NAQPMS) were used to simulate a typical heavy PM2.5 pollution event in the Yangtze River Delta (YRD) on January 10, 2015. The results showed that NAQPMS simulation accurately reproduced the development process of heavy PM2.5 pollution in the YRD. External regional pollution transport was a significant factor, primarily through three channels:the inland channel (Henan-Anhui-Jiangsu), coastal channel (Hebei-Shandong-Jiangsu), and ocean channel (Hebei-Shandong-Huanghai Sea-Jiangsu). The source apportionment of estimating the contribution across regions with Ningbo as the receptor showed that the coastal channel was the main channel in the pollution occurrence stage, and the large transport contribution was from Jiangsu (36.51%). The inland and ocean channels were more important in the heavy pollution stage, and the main external regional contributions were from Zhejiang North (25.55%), Anhui (12.33%), and the ocean (16.92%). Pollution dissipation was mainly affected by the ocean channel, and the main external contribution regions were Jiangsu (14.74%) and the sea (31.43%). |
