+ Visit NASA.gov + Advanced Search   + About the Server   + Animation List   + How to Use the Server Previous Animation Next Animation Ozone Measurements from 2000 through 2003 (WMS) This visualization shows the total ozone concentrations for the Earth from January 1, 2000 through December 31, 2003, as measured by theTOMS instrument on the Earth Probe satellite. Low ozone (less than 200 Dobson units) is depicted as regions of dark blue, with high ozone (greater that 330 Dobson units) depicted as yellow and red. The most visible and dynamic feature of the ozone distribution is the ozone hole that forms over Antartica during September of each year. The amount of ozone in the stratosphere over Antarctica is reduced during this period due to unique atmospheric conditions which chemically reduce the amount of ozone in the region and prevent that ozone from mixing with the higher ozone concentrations just outside the hole. Ozone blocks harmful ultraviolet 'B' rays, and loss of statospheric ozone has been linked to skin cancer in humans and other adverse biological effects in plants and animals. This visualization explicitly shows the TOM ozone data coverage and does not interpolate data into regions of the Earth that the instrument did not observe. Since TOMS measures ozone by observing the characteristics of sunlight reflected from the Earth's surface, no measurements are available for the poles during the polar winter, i.e., around January for the North Pole and July for the South Pole. Also, there is an unobserved region between successive satellite orbits around the equator. Finally, the instrument has periods where technical issues make measurement impossible for a matter of hours or days. This visualization shows that the dynamics of the ozone layer remain visible despite these measurement issues.    This animation shows the original data for stratospheric ozone over the entire earth. Data gaps--areas where the instrument did not collect data--have not been interpolated. Red and yellow areas denote regions of high ozone density and dark blue represents areas of low ozone. Duration: 48.0 seconds Available formats:   288x180 (29.97 fps) MPEG-1   13 MB   160x80       PNG           21 KB   320x200     GIF           36 KB   80x40         PNG           6 KB How to play our movies This product is available through our Web Map Service.   Click here to learn more.    Legend for the ozone animation. Available formats:   320 x 90           PNG   2 KB Animation Number: 2903 Animators: Eric Sokolowsky (Lead)   Greg Shirah   Horace Mitchell Studio: SVS Completed: 2004-02-12 Scientist: Paul Newman (NASA/GSFC) Instrument: Earth Probe/TOMS Data set: Total Ozone Data Collected: 2000/01/01 - 2003/12/31 Series: WMS Keywords: DLESE >> Atmospheric science SVS >> Ozone GCMD >> EARTH SCIENCE >> Atmosphere >> Atmospheric Chemistry/Oxygen Compounds >> Ozone More Information on this topic available at: http://toms.gsfc.nasa.gov/ozone/ozone.html Google Earth KML file is available here. DEPC Metadata is available here.     Please give credit for this item to NASA/Goddard Space Flight Center Scientific Visualization Studio Back to Top + Privacy Policy and Important Notices + Reproduction Guidelines NASA Official: SVS Contact: Curator: