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[Characteristics of Ozone Pollution Distribution and Source Apportionment in Zhoushan]
Qiao-Li Wang1,2, Min-Li Dong2, Su-Jing Li2
1State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, College of Energy Engineering, Zhejiang University, Hangzhou 310027, China.
Huan Jing Ke Xue= Huanjing Kexue
|May 16, 2019
Summary
Ozone pollution in Zhoushan is highest in spring and autumn afternoons. Non-local sources contribute significantly to ozone formation, necessitating coordinated control of volatile organic compounds (VOCs) from various local and regional emission sources.
Area of Science:
- Atmospheric Chemistry
- Environmental Science
- Air Quality Modeling
Context:
- Ozone and its precursors' photochemical reactions and transport are complex.
- Zhoushan's 2014 ambient air quality data was analyzed for ozone pollution patterns.
Purpose:
- To statistically analyze spatial and temporal ozone distributions in Zhoushan.
- To simulate ozone formation using the Community Multiscale Air Quality (CMAQ) model.
- To identify source contributions using the Integrated Source Apportionment Method (ISAM).
Summary:
- Ozone pollution peaked in spring and autumn afternoons (13:00-15:00).
- Putuo Station recorded the highest ozone, Lincheng Station the lowest.
- Non-local sources were the primary contributors (69.46%) to ozone formation.
- Local sources like fuel burning, industry, and mobile sources had similar contributions.
- Port-specific sources (shipping, petrochemical, storage) also contributed to ozone levels.
Impact:
- Findings highlight the significant role of non-local sources in Zhoushan's ozone pollution.
- Effective ozone control requires coordinated, multi-source reduction strategies, focusing on VOCs.
- The study provides crucial data for regional air quality management in port cities.
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