A changing climate leads to changes in the frequency, intensity, spatial extent, duration and timing of extreme weather and climate events, and can result in unprecedented extreme weather and climate events.
Such extreme weather and climate events as Lengthening Droughts; Extreme Rainfall; Bolstering Heat Waves; Massive Tornadoes; and Wildfires have become more common now.
In general, the Climate change and Hydrology are highly inter-linked and they are supposed to be under Dynamic Equilibrium.
With the introduction of more number of extreme events on earth, whether the coupled climate-change and hydrological system will still be in Dynamic Equilibrium?
OR
Will it drastically change the Total Annual Turn over of Water on Earth (Roughly 0.6 million cubic km)?
OR
Will it significantly impact the evaporation fraction from ocean (Roughly 85%) and land (Roughly 15%) from its conventional pattern?
OR
Will it significantly influence the precipitation fraction over Ocean (Roughly 80%) and Land (Roughly 20%) from its conventional pattern?
I think that if human intervention does not exist, it will be balanced
I think this equilibrium, as you defined it, is changing. For example, there is more evaporation due to higher temperatures. This extra evaporation will lead into heavier precipitation (floods and landslides increase as a result).
I think the question covers a broad topics and needs more precision because each type of extremes has different dynamics. So the effects and feedback of each environmental variations like SST (Sea Surface Temperature), SLP (Sea Level Pressure), etc upon dynamics of tropical cyclones, mid-latitude cyclones, synoptic or meso-scale vortices, El Niño, La Niña, etc are not the same and consequently hydrological dynamics follow different patterns.
On the other hand, there exist diversified time variations of events: daily, weekly, seasonally, decadal, or multi-decadal variability. Like Madden Julian Oscillation and North Atlantic Oscillation. So integration of all seems oversimplification.
The Earth's climate system is subject to the ever-present principle of Le Châtelier. Although the original formulation was proposed for the chemical reaction, it has been generalized for other applications, including economics and climate.
The adjustment of the state of a complex system resulting from Le Châtelier's rule pushes the system to seek a new equilibrium capable of absorbing, resisting and minimizing the applied force.
In this sense, we can look at new weather conditions as "agents" that resist and minimize the effects of increasing concentrations of greenhouse gases. I suspect that the increase in baroclinicity is one of the main features of these new weather conditions. The detailed analysis of the observations and the results of the numerical models seems to corroborate this hypothesis.
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