rotation Archives - Adventures in Oceanography and Teaching

Tilting frontal surface under rotation / cylinder collapse

June 16, 2020

Torge and I are planning to run the “tilting of a frontal surface under rotation / cylinder collapse” experiment as “remote kitchen oceanography” in his class on Thursday, so I’ve…

Rotating vs non-rotating turbulence

June 9, 2020

Last Thursday, Torge & I invited his “atmosphere & ocean dynamics class” to a virtual excursion into my kitchen — to do some cool experiments. As you know, I have…

A common misconception in rotating tank experiments, and one way of maybe not reinforcing it

June 5, 2020

A very common misconception when looking at atmosphere & ocean dynamics in a rotating tank is that the center of the tank represents one of the poles and the edge…

Solid body rotation

May 30, 2020

Several of my friends were planning on teaching with DIYnamics rotating tables right now. Unfortunately, that’s currently impossible. Fortunately, though, I have one at home and enjoy playing with it enough…

Thermal forcing vs rotation tank experiments in more detail than you ever wanted to know

May 25, 2020

This is the long version of the two full “low latitude, laminar, tropical Hadley circulation” and “baroclinic instability, eddying, extra-tropical circulation” experiments. A much shorter version (that also includes the…

Thermal forcing vs rotation

May 23, 2020

The first experiment we ever ran with our DIYnamics rotating tank was using a cold beer bottle in the center of a rotating tank full or lukewarm water. This experiment is…

Ekman layers in my kitchen

May 21, 2020

Several of my friends were planning on teaching with DIYnamics rotating tables right now. Unfortunately, that’s currently impossible. Fortunately, though, I have one at home and enjoy playing with it enough…

Rossby-#WaveWatchingWednesday

May 20, 2020

Several of my friends were planning on teaching with DIYnamics rotating tables right now. Unfortunately, that’s currently impossible. Fortunately, though, I have one at home and enjoy playing with it enough…

Thermal forcing in a non-rotating vs rotating case: Totally different results

November 23, 2019

On Thursday, I wrote about the thermally driven overturning circulation experiment that Torge and I did as past of our “dry theory 2 juicy reality” experiments, and mentioned that it…

Taylor column in a rotating tank

September 11, 2019

For both of my tank experiment projects, in Bergen and in Kiel, we want to develop a Taylor column demonstration. So here are my notes on the setup we are…

Combining rotation of a water tank with a temperature gradient: A Hadley cell circulation demo!

August 15, 2019

Yesterday, we combined a thermally-driven overturning circulation with the effects of rotation, and thus created a Hadley cell circulation. And while the tank was turning faster than we would have…

Combining a slowly rotating water tank with a temperature gradient: A thermal wind demonstration!

August 14, 2019

Setting up an overturning circulation in a tank is easy, and also interpreting the observations is fairly straightforward. Just by introducing cooling on one side of a rectangular tank a…

Why do we need a rotating tank to study ocean and atmosphere dynamics? A demonstration

August 13, 2019

For our project “Ocean currents in a tank: From dry theory to juicy reality“, Torge, Joke and I are working on building affordable rotating tanks to use in Torge’s Bachelor…

Demonstrating Ekman layers in a rotating tank: High pressure and low pressure systems!

August 11, 2019

Ekman spirals — current profiles that rotate their direction over depth, caused by friction and Coriolis force — are really neat to observe in a rotating tank. I just found…

Why do we go to all the hassle of rotating our swimming pool?

September 11, 2017

This blog post was written for Elin Darelius & team’s blog (link) which you should totally follow if you aren’t already! — We have started rotating and filling water into…

The effects of rotation on a collapsing column

September 12, 2014

Comparing a rotating and non-rotating dipole. I just realized that I never explicitly showed the difference between rotation and no rotation, even though I do have the footage to do so:…

Simulations of hetonic explosions

September 10, 2014

Because sometimes it’s easier to control a computer than rotation, salinity, water and dye. After looking at a non-rotating cylinder collapse the other day, it is time to look at…

Cylinder collapse on a cone

August 29, 2014

Water running uphill during spin-down – how much more awesome can it get? After hours, when all but the most curious students had left, Rolf and I ran another collapsing…

Hetonic explosion

August 28, 2014

Trying to tweak conditions to force a set number of vortices. We’ve done the hetonic explosion again. This time the group was super careful to calculate the Rossby radius correctly,…

Hadley cell circulation – slow rotation

August 28, 2014

In order to not be in the eddying regime, this time we are rotating our tank as slowly as possible. Since we ran the Hadley cell experiment the other day,…

Hetonic explosion

August 24, 2014

Or, an experiment on this blog often known as “slumping column”. (deutscher Text unten) If you don’t scale your tilting of frontal surfaces under rotation experiment correctly, you get a phenomenon…

Tilting of a frontal surface under rotation

July 11, 2014

Eddy in a rotating tank. This is an experiment that Pierre and I ran two years ago in Bergen but that – as I just realized – has not been…

Tag: rotation

Tilting frontal surface under rotation / cylinder collapse

Rotating vs non-rotating turbulence

A common misconception in rotating tank experiments, and one way of maybe not reinforcing it

Solid body rotation

Thermal forcing vs rotation tank experiments in more detail than you ever wanted to know

Thermal forcing vs rotation

Ekman layers in my kitchen

Rossby-#WaveWatchingWednesday

Thermal forcing in a non-rotating vs rotating case: Totally different results

Taylor column in a rotating tank

Combining rotation of a water tank with a temperature gradient: A Hadley cell circulation demo!

Combining a slowly rotating water tank with a temperature gradient: A thermal wind demonstration!

Why do we need a rotating tank to study ocean and atmosphere dynamics? A demonstration

Demonstrating Ekman layers in a rotating tank: High pressure and low pressure systems!

Why do we go to all the hassle of rotating our swimming pool?

The effects of rotation on a collapsing column

Simulations of hetonic explosions

Cylinder collapse on a cone

Hetonic explosion

Hadley cell circulation – slow rotation

Hetonic explosion

Tilting of a frontal surface under rotation

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