Citizen Science Project Launched, To Make Sense Of Devastation:
Like me, I'd guess that none of those commenting here about the cause of this exceptional bush fire season (and in particular their relationship with global warming, if any) has any academic/professional qualifications or practical knowledge of the subject (but by all means correct me if I'm in error). Hence, although I've followed this thread and made a couple of observations, I've abstained from commenting on the causes of these terrible fires. I don't know the cause but defer to those I can reasonably expect to know far more than me or the media commentariat. Although I'm sure it's not perfect, I think a video from 'Potholer54' (see below) does a good job of pulling together what's being claimed in the media and contrasting it with what the expert scientists & firefighters have to say about the matter. Interesting viewing .....
Overall hydrology again is a very complex situation where comprehensive science has not been completed on the whole 'system' so I will try and be brief. Linking the hydrology of the various biotypes with vegetation transpiration processes, temperature and rainfall is an emergent scientific field (see the thread on Natural Sequence Farming - papers are few, but practitioners growing).Have to admit that in mountainous/hilly regions (as in lots of images/videos) I would find it hard to push water extraction as the major cause of the increased severity of fires.
Of course could be a factor (of many possibly) in some areas, especially near habitations/agriculture, but would expect the water table over large parts of the affected areas to have not been affected to the extent that it was a causal effect.