You can also view these images via an auto-updating smartphone friendly format:
These streams provide a live video feed from the rooftop cameras and require the free VLC Player to play.
A rolling 30-day archive of the full 10 frames per second (fps) video from the rooftop cameras is available at roofvid.ssec.wisc.edu. Other movies available here and through AOS are generally composites of still images snapped every 10 seconds.