Use of high-resolution MM5/CALMET/CALPUFF system: SO2 apportionment to air quality in Hong Kong
Use of high-resolution MM5/CALMET/CALPUFF system: SO2 apportionment to air quality in Hong Kong
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DOI：
10.1016/j.atmosenv.2010.08.037
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发表时间：
2010-12
影响因子：
5
通讯作者：
S. Yim;J. Fung;A. Lau
中科院分区：
文献类型：
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作者：
S. Yim;J. Fung;A. Lau
最近的研究强调香港特别行政区(香港特区)空气污染对健康造成的巨大损失，以及空气污染对香港特别行政区经济竞争力的潜在威胁。为解决空气污染问题，本文旨在分析珠江三角洲地区(珠江三角洲+香港特别行政区)主要二氧化硫(SO2)源对香港特别行政区空气质量的个别贡献。这项研究采用了MM5/CALMET系统与CALPUFF的耦合，多层非稳态烟尘扩散模型，其中考虑了PRDR中的主要发电厂、船舶和车辆。分析了11个香港环境保护署(环保署)一般(非路边)监测站的观测数据和模拟结果。我们界定市区(区内)和郊区(区外)监测站，以研究香港特别行政区不同地区不同排放源对二氧化硫的贡献。模式结果表明，香港特别行政区海源在夏季和冬季都有较大的贡献，特别是在区域内站点周围的位置(总体上分别为60%和55%)。此外，在初夏，香港特别行政区发电厂的贡献略高于珠江三角洲发电厂，当盛行南风时，贡献差异高达20%。然而，在夏末，这种情况发生了逆转。在冬季，珠三角发电厂的贡献率是香港特别行政区发电厂的两至三倍。此外，当东北风吹过香港特别行政区时，盐田港会影响香港特别行政区北部。为了解决这些空气污染问题，这些结果的主要含义是，香港特区政府需要与广东省政府密切合作，立即采取行动。
Recent research has highlighted the substantial health-related costs of air pollution in the Hong Kong Special Administrative Region (HKSAR) and the potential threat from air pollution to HKSARs economic competitiveness. In order to address the air pollution problems, this paper seeks to analyse the individual contributions of major sulphur dioxide (SO2) sources in the Pearl River Delta Region (PRDR) (Pearl River Delta + HKSAR) on the air quality in the HKSAR. This study employed the coupling of the MM5/CALMET system with the CALPUFF, the multi-layer, non-steady-state puff dispersion model, where major power plants, marine vessels and vehicles, all in the PRDR, are taken into account. The observation data and simulation results at 11 Hong Kong Environmental Protection Department (HKEPD) general (non-road-side) stations are analyzed. Urban (in-zone) and Rural (out-zone) stations are defined in order to examine the SO2contribution of different emission sources in different regions of the HKSAR. The model results show that the contribution of the HKSAR marine sources is significant both in summer and in winter, especially for the locations around the in-zone stations (in general 60%, and 55% in summer and winter respectively). In addition, the contribution of the HKSAR power plants is slightly higher than that of the PRD power plants in early summer, with a contribution difference of up to 20% when the prevailing wind is from the south. However, in late summer, this situation reverses. In winter, the contribution of the PRD power plants is two to three times greater than that of the HKSAR power plants. Moreover, Yantian port affects the northern part of the HKSAR when a northeasterly wind dominates the HKSAR. In order to solve these air pollution problems, the main implication of these results suggests that the HKSAR government, in close co-operation with the Guangdong government, needs to take immediate action.