All those factors point right at climate change. Except maybe the aircraft fuel, unless you are talking about firefighting aircraft specifically. Which would also be in the climate change category. Are we going to see redwoods “migrate” north to cooler wetter conditions?It does start from the top down but the state pathologist does not believe it is strictly drought stress but a combination of drought, sun scald, wildfire smoke, general air pollution and maybe even aircraft dumping fuel prior to approach. I will try to keep you informed.