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卫星绘制全球空气质量的最新进展:在COVID-19大流行期间的证据

Venkatesh Dutta¹, Saroj Kumar¹, Divya Dubey¹

¹Department of Environmental Science (DES), School of Earth and Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025 India.

Environmental sustainability (Singapore)

|April 16, 2024

概括

由于COVID-19的封锁,全球空气污染显著降低,全球范围内观察到二氧化 (NO2) 和二氧化硫 (SO2) 度显著下降. 卫星数据证实了这些空气质量改善,强调了受限制的工业和交通活动的影响.

科学领域:

环境科学环境科学
大气化学大气化学
遥感遥感遥感遥感

背景情况:

随着COVID-19大流行,全球范围内实施了封锁,导致工业和运输活动前所未有的减少.
空气质量监测对于了解人类活动对环境的影响至关重要.
卫星技术为实时全球环境监测提供了先进的功能.

研究的目的:

评估COVID-19封锁对全球空气质量的影响.
使用卫星和地面数据量化减少主要空气污染物的数量.
评估先进的卫星传感器在监测排放变化的作用.

主要方法:

利用卫星遥感数据,这些数据来自诸如科珀尼克斯卫星Sentinel-5前身热带层监测仪器 (S5p/TROPOMI) 和温室气体观测卫星 (GOSAT) 等仪器.
使用地面监测站进行空气质量比较测量.
分析了二氧化 (NO2),二氧化碳 (CO2),二氧化硫 (SO2),甲 (CH4) 和气溶度的变化.

主要成果:

全球NO2,CO2,SO2,CH4和气溶的平均度显著下降.
在印度,中国和欧洲各大城市观察到NO2水平减少40-50%.
在受污染的印度地区,特别是工业区附近的SO2度下降了约40%.

结论:

通过减少工业和交通排放,COVID-19封锁明显改善了全球空气质量.
卫星遥感是实时监测空气质量和排放制度的重要工具.
该研究强调了人类活动水平与大气污染之间的直接联系.

关键词:

气溶是一种气溶.空气质量空气质量在 COVID-19 疫情中,哥白尼号卫星卫星-5P 卫星绘制的地图.

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