And sulfur dioxide is also a product of coal. Much of China switched from coal to other fuel recently. An interruption in fuel supply could easily explain the SO2 levels.
“And sulfur dioxide is also a product of coal. Much of China switched from coal to other fuel recently. An interruption in fuel supply could easily explain the SO2 levels.”
Except the levels of SO2 near Wuhan the epicenter of the virus have increased recently compared to the rest of China. In your scenario Wuhan shouldn’t be showing a noticeable increase in levels and should be roughly the same, while other parts of China show a decrease.