Preprint Article Version 1 This version is not peer-reviewed

Trends of Southeast Asian Urban NO2, O3, and SO2 Concentrations during COVID 19 Social Distancing and Forecast Period

Version 1 : Received: 12 June 2020 / Approved: 14 June 2020 / Online: 14 June 2020 (03:43:42 CEST)

How to cite: Adwibowo, A. Trends of Southeast Asian Urban NO2, O3, and SO2 Concentrations during COVID 19 Social Distancing and Forecast Period. Preprints 2020, 2020060162 (doi: 10.20944/preprints202006.0162.v1). Adwibowo, A. Trends of Southeast Asian Urban NO2, O3, and SO2 Concentrations during COVID 19 Social Distancing and Forecast Period. Preprints 2020, 2020060162 (doi: 10.20944/preprints202006.0162.v1).

Abstract

COVID 19 has caused social distancing and lead to the reductions of various anthropogenic activities. Correspondingly this study has two fold objectives. First, aims to provide quantification measurement of social distancing impacts on air quality. Second, to forecast the air quality if social distancing is continued. The measured air quality parameters consist of NO2, SO2, and O3. According to the results, the order of air quality parameters was NO2<SO2<O3. The NO2, SO2, and O3 levels were observed lower after social distancing than before social distancing was implemented. The reductions of NO2, SO2, and O3 levels were 5%, 3%, and 5% respectively. Likewise, 65% of study periods (30 days) after implementation of social distancing have lower NO2 than before social distancing. The exponential smoothing forecasts show the decreasing trends for NO2 and SO2. While O3 levels are estimated will remain stable after social distancing. This study has shown that the social distancing has an impact on the NO2, SO2, and O3. Correspondingly, if the social distancing is continued, then it is estimated can provide a positive impact on urban quality. Keywords: COVID 19, forecast, NO2, O3, SO2.

Subject Areas

COVID 19; forecast; NO2; O3; SO2

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