Video on top shows simulation of a 220sqft canopy landing on a dropzone at 12000 ft elevation (such as the drop zone next to the Everest: http://everestskydive.com).
This video was created after talking to Chris Parsons ( http://www.poppydrop.com ).
In both simulations the canopy starts at the same altitude above the ground. Wing loading is the same for both cases.
One can see that canopy moves much faster at the top video, because air density is smaller.
Check http://staticlineinteractive.com for more information.