Imaging via Particle Velocimetry of Sloshing

This is an interesting paper on capturing the volumetric effects of sloshing:

Simonini, A., Vetrano, M. R., Colinet, P., & Rambaud, P. (2014). Particle Image Velocimetry applied to water sloshing due to a harmonic external excitation. In Proc. of the 17th International Symposium on Applications of Laser Techniques to Fluid Mechanics.
The scale that they describe applies to containers filled with liquid subject to external forces.
Compare against the very large scale equatorial Pacific dynamics

linked from NOAA here

Absolute temperature, from which the anomaly is based

 

Anomaly of temperature. The emerging hotspots are what lead to El Nino conditions.

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