在COVID-19封锁期间全球NO2污染的变化:对可持续的海洋运营的影响
S Athul1, J Kuttippurath2, V K Patel2
1CORAL, Indian Institute of Technology Kharagpur, Kharagpur 721302, India; Cochin University of Science and Technology, Kochi 682022, India.
Journal of hazardous materials
|November 18, 2024
概括
由于COVID-19的封锁,全球航运造成的二氧化 (NO2) 污染量显著减少了10-30%. 这凸显了船舶活动减少对海洋和港口环境空气质量的影响.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 海洋污染 海洋污染
背景情况:
- 全球航运业务是大气污染物的重要来源,特别是二氧化 (NO2).
- 随着COVID-19的封锁,人们有了一个独特的机会来研究由于人类活动受到限制和全球海上交通减少而导致的排放.
研究的目的:
- 调查封锁限制对全球航道,港口和沿海地区的二氧化 (NO2) 污染水平的影响.
- 评估减少海上活动对减轻航运相关空气污染的有效性.
主要方法:
- 对TROPOMI卫星测量的分析,以量化NO2度的变化.
- 在封锁期间检查全球主要航线,海峡和高流量港口的污染数据.
主要成果:
- 在主要航道 (10-20%) 和关键海峡上观察到NO2污染的显著下降.
- 全球主要港口NO2水平大幅下降,平均约为30%.
- 二氧化的减少与封锁措施导致的船舶 (货物,乘客,渔业,油轮) 密度下降是一致的.
结论:
- 封锁期间减少的海上交通有效降低了二氧化 (NO2) 排放量,证明了航运对空气质量的重大影响.
- 该研究主张在航运部门制定更严格的环境政策,以解决与沿海和港口城市空气污染有关的公共卫生问题.
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