Reduced Air Pollution during the Prevailing of COVID-19 Pandemic: Five Years Observation and Path Analysis in the Fenwei Plain, Northwest China

<div>Visibility and wind speed trends from 2016 to 2019 and from January to May 2020 (a, b); visibility trend with time and PM<sub>2.5</sub>/PM<sub>10</sub> ratio trend (c, d).</div>

Advances in Meteorology

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Figure 3

Figure 3: Reduced Air Pollution during the Prevailing of COVID-19 Pandemic: Five Years Observation and Path Analysis in the Fenwei Plain, Northwest China 

Figure 3 | Reduced Air Pollution during the Prevailing of COVID-19 Pandemic: Five Years Observation and Path Analysis in the Fenwei Plain, Northwest China 