Groundwater in movement
This visualization shows how water mass is constantly changing around the world.
Each circle shows water height anomaly for that location compared to its long-term average. White circles represent water gain while empty circles represent water loss, the bigger the circle, the higher the gain or loss.
The visualization is a part of a submission for HeadsUP! Times Square Visualization Challenge. A full description of the submission can be found at http://www.torre.nl/headsup/description.html