Once the initial animation is complete: UP/DOWN = zoom in/out RIGHT/LEFT = scroll through time. This is a visualization for sea ice extent. The data is plotted on a circular graph with one rotation representing a full year. The colour represents global mean surface temperatures (blue=colder red=hotter). High C is sounded when a new record high is recorded, and low C when a new record low is recorded. Southern hemisphere is plotted first. Notice that antarctic sea ice is quite small in February and that antarctic sea ice extent is quite stable (even growing slightly) even as temperatures increase. Northern hemisphere is plotted second. Notice that arctic sea ice is quite small in September and that September extent has reduced by about half.just over the last decade Total sea ice is shown third. Overall the globe is losing ice as the world warms, with a fairly dramatic departure from the mean at the end of 2016.
Data from ftp://sidads.colorado.edu/DATASETS/NOAA/G02135 Each bar covers 2 million square kilometers Here is another visualization of the same data: https://scratch.mit.edu/projects/99853569/
