Don’t Go With the Flow

LYRICS
Can’t go with the flow
When flow won’t let go
We will come to know
The force that flows
Will grow and grow
Now how to let go
Might start with a drip
Then a drop just won’t stop

So woah with the flow
Oh woe slow the flow
Forego overflow
The force that flows
Will grow and grow
Now how to let go
Might start with a drip
Then a drop just won’t stop

Oh no with the flow
Won’t go with the flow
I know undertow
The force that flows
Will grow and grow
Now how to let go
Might start with a drip
Then a drop just won’t stop

Chords: A C G A / A Bb A / D A / A D C A / A D C G A; Part II @ 85 Beats Per Minute
Instrumentation: Vocals (TC-Helicon VOICELIVE and MiniNova Vocorder), Ibanez Acoustic Guitar, Fender Squire Mini Electric Guitar (Vox Sound Lab and Boss Digital Delay), Fender Jazz Bass (Korg Toneworks Bass Multi Effects and Boss Digital Delay), Keyboards (Korg PS60, Casio WK-3500, Yamaha PSR-740, MiniNova, MicroKorg)

Human induced climate change is an exponential component of an unordered system (chaos theory). That means global warming is accelerating at a rapid rate in a complex way.

Violent Rain
Multiple factors figure into the physics of violent rain. The Momentum of Rain is p = mv (p = momentum, m = mass, v = velocity.) Part of the increasing momentum is transferred to the sides and upward increasing wind turbulence, as well as updrafts. Most of the momentum is transferred upon impact. You may notice the rain bouncing higher off the streets and sidewalks. As rain becomes more massive, it will have greater momentum when it hits the ground causing more damage.

Mass is not the only factor in violent rain. The greater the mass of the rain the more the wind turbulence is intensified. Professor Paul D. Williams of the University of Reading, UK, said, “They are chaotic (chaos theory). Turbulence is known famously as the hardest problem in physics.” In their study Evidence for Large Increases in Clear-Air Turbulence Over the Past Four Decades, Prof. Williams and his team found “Climate change has caused turbulence to double in the last 40 years” and is expected to double or triple again in the next decades.

The momentum of rain and the turbulence of wind are part of a larger equation that includes not only the mass and velocity of precipitation but also the density. The combination of these variables results in an increased intensity of the flow dynamics. Increased updrafts will result in an increase in the frequency of hail. When violent rain becomes denser and turns into hail, it can be deadly. Ground without groundcover will be hit harder causing more damage. The groundcover will also be hit harder causing more damage. Concrete, asphalt, solar panels, roofs, and plants will sustain more damage. Hail may also impact your skull. Infants and young children are at highest risk. Several infants have been killed by hail in the past year.

Wind and water flow forces scale as the square of velocity, so as flow speeds increase (say due to more intense heating or heavier rain) the damage scales as the square of the velocity. Look at drag physics and you will see that force is proportional to density times square of velocity (v^2).

The Drag Equation
So a twenty mile an hour wind exerts four times as much force as a ten mile an hour wind. And a forty mile an hour wind exerts sixteen times as much force as a ten mile an hour wind. A wind of fifty miles an hour exerts twenty five times and a wind of sixty miles an hour exerts thirty six times as much force as one of ten miles an hour. Then you have the density term. Water is about eight hundred times denser than air, So the force exerted by a ten mile an hour flow of water is eight hundred times that of a ten mile an hour wind. So as flow velocities go up due to climate change, force and damage scale as square of the velocities. What is not clear is how much these velocities increase with climate change. But in a sense we are seeing this already as, for example, flood and sewage systems succumb and hillsides fall down, and so on.

— from The Reign of Violent Rain Brouse and Mukherjee (2023)

Climate Change: How Long Is “Ever”?

A song about The Human Induced Climate Change Experiment

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