+ Visit NASA.gov + Advanced Search   + About the Server   + Animation List   + How to Use the Server Previous Animation Next Animation Arctic Vortex Arctic Vortex - During winter, stratospheric winds (uppermost atmosphere) tend to form a vortex around the North Pole. These polar clouds lead to chemical reactions that affect the chemical form of chlorine in the stratosphere. In certain chemical forms, chlorine can deplete the ozone layer.    This is the standard definition version of the Arctic Vortex animation MPEG. Duration: 23.0 seconds Available formats:   320x240 (30 fps) MPEG-1   3 MB   150x112     JPEG         3 KB   75x56         JPEG         1 KB   320x240     JPEG         9 KB How to play our movies Animation Number: 10005 Animator: Susan Twardy (Lead) Studio: CI Lab Completed: 2000-04-20 Scientist: Paul Newman (NASA/GSFC) Writer: Michael Starobin (HTSI) Goddard TV Tape: G2000-035 Keywords: SVS >> Arctic Jetstream SVS >> Atmosphere SVS >> Byrne SVS >> Earth Science SVS >> Gonnelli SVS >> Ozone SVS >> Stratospheric Clouds SVS >> Stratospheric Winds     Please give credit for this item to NASA/Goddard Space Flight Center Conceptual Image Lab Back to Top + Privacy Policy and Important Notices + Reproduction Guidelines NASA Official: Content Contact: Curator: