泰国大城府新冠肺炎期间气溶胶变化的影响因素

A. Kodaka, N. Leelawat, Yasushi Onda, Jing Tang, A. Laosunthara, Kumpol Saengtabtim, Piyaporn Sochoeiya, N. Kohtake
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引用次数: 3

摘要

泰国政府通过控制社会经济活动,采取了各种干预措施,以防止新冠病毒的传播,但这些干预措施的有效性和其他因素尚未完全明确。因此,本研究旨在通过对大气成分的空间分析,为大流行期间影响社会经济活动变化的潜在因素提供进一步的科学证据。以泰国那空寺大城府为个案区。将政府的新冠肺炎对策结果和产业现状与谷歌Earth Engine利用气象、水文等9个开放数据集分析的PM 2.5等气溶胶变化进行对比。分析显示,2020年全省城镇地区气溶胶指数较2019年下降28.03%。此外,PM 2.5自2020年3月开始急剧下降,即使没有风速作为最高因果关系的影响,也保持在较低水平。这一趋势的原因可以解释为,除了国家一级的紧急状态令等政府干预措施外,Rojana工业园区工厂活动的减少和游客数量的减少对PM 2.5平均值的降低有重大影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influential Factors on Aerosol Change During COVID-19 in Ayutthaya, Thailand
Various interventions were made by the Thai government to prevent the COVID-19 spread by controlling socioeconomic activities, but the effectiveness of these interventions and other factors have not yet been fully clarified. Thus, this study aims to provide further scientific evidence on those potential factors which affect the socioeconomic activities changes during the pandemic, by using spatial analysis on atmospheric composition. By taking Phra Nakhon Si Ayutthaya Province, Thailand as the case area. Results of the government's COVID-19 measures and statuses of industries were compared with changes in aerosols, including PM 2.5 which was analyzed by Google Earth Engine with nine open datasets including meteorological and hydrological factors. The analysis revealed that the aerosol index in ueban area of the province decreased at 28.03% in 2020 compared in 2019. Besides, PM 2.5 drastically decreased from March 2020, even without the influence of wind speed which as the highest causal relationship, and kept low level compared with previous years. The reason of the tendency would be explained that other than government interventions including national-level state of the emergency decree, reduction of factories' activities at Rojana Industrial Park and reduction of the number of tourists had significant influence to reduce the mean value of PM 2.5.
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