Kandari Ritu, Kumar Ashwani
Indira Gandhi Delhi Technical University for Women, Kashmere Gate, New Delhi, India.
University School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University, Sec 16 C Dwarka, New Delhi, India.
Environ Sustain (Singap). 2021;4(3):543-549. doi: 10.1007/s42398-020-00154-6. Epub 2021 Feb 4.
The world is facing an unexpected, like never before, situation due to COVID-19. The measures to contain the COVID-19 pandemic are to incorporate lockdown, social distancing, disconnection, and home isolation. Lockdown was enforced by the various governments of the South Asian countries, which include non-working of all the businesses and assembling units, with limited access to the outer world pertaining to essential commodities. However, During the COVID-19 pandemic, an uncommon positive impact is noteworthy for worldwide abatement in air-contamination levels. Principally, specialists have estimated significant improvement in air quality and a remarkable decrease in concentration levels of various harmful gases like sulfur dioxide (SO), nitrogen dioxide (NO), carbon monoxide (CO), and ozone (O). In this article, there is an analysis made on the impact of Covid-19 lockdown on the air quality of the South Asian region i.e. (that is) the various environmental parameters along with others namely aerosol, temperature, and particulate matter (PM, PM). The work includes the refining and analysis of crude information of this present (2020) and the past year of different toxic gases and parameters of air pollutants. These have been obtained from pollution control boards of respective South Asian nations alongside information and satellite pictures from the UN Environment Program and Space Administration for correlation of various parameters. It has been observed that there is a sharp dip in the pollutant concentration in South Asia. This examination altogether will be valuable data to environmentalists and experts to make the future policies for improving air quality and the environment.
由于新冠疫情，世界正面临着前所未有的意外情况。遏制新冠疫情大流行的措施包括封锁、社交距离、隔离和居家隔离。南亚各国政府实施了封锁，所有企业和聚集场所停业，只有在获取基本商品方面能有限地接触外部世界。然而，在新冠疫情期间，全球空气污染水平下降这一不同寻常的积极影响值得关注。主要是，专家们估计空气质量有了显著改善，二氧化硫（SO）、二氧化氮（NO）、一氧化碳（CO）和臭氧（O）等各种有害气体的浓度水平大幅下降。本文分析了新冠疫情封锁对南亚地区空气质量的影响，即各种环境参数以及其他参数，如气溶胶、温度和颗粒物（PM、PM）。这项工作包括对当前（2020年）和过去一年不同有毒气体及空气污染物参数的原始信息进行提炼和分析。这些信息来自南亚各国的污染控制委员会，以及联合国环境规划署和航天局的信息及卫星图片，用于各种参数的对比。据观察，南亚地区污染物浓度大幅下降。这项研究总体上对于环保主义者和专家制定改善空气质量和环境的未来政策将是有价值的数据。
