@rayatthebeach Good point. I have not seen any news that the businesses and factories there are up and running and this should reduce the current power demand.
Also to be honest, I'm no chemist, I just remembered some lectures of coal power plants and SO2, and then happened to look at this map/model over time here.
@seeletw I wish we would have this historic data, but even still we would probably not be able to use this to make the connection of burning bodies as it could just be an increased coal plant output.
I recommend to check out Wuhan on the Windy map with same color coding as described in this thread, but instead of looking at a still image, use the play button on the bottom to see how much the SO2 concentration varies based on wind direction and speed.
There is the Yangluo coal power plant close by which if not using SOx scrubbers will produces massive ammounts of SO2. https://en.wikipedia.org/wiki/List_of_major_power_stations_in_Hubei_province