Antarctic
Ozone Levels 1979-1992 Animation
Figure 7e-2: The two spheres above represent the polar view of the South (left) and North Pole (right). In this animation one can see the change in ozone levels over Antarctica for the date October 15, during the period 1979 to 1992. The colors in the images represent the quantity of ozone present in Dobson units. See the scale at the bottom of the animation to match the colors displayed with their corresponding Dobson unit value. Shades of medium blue, dark blue, light purple, dark purple and pink represent abnormally low quantities of ozone. As you go through the images from 1979 to 1992, note how the ozone hole becomes larger and the loss of ozone more intense. (Source: NASA). (To view this animation your browser must have Apple's QuickTime plug-in. The QuickTime plug-in is available for Macintosh and Windows operating system computers and can be downloaded FREE from the World Wide Web site www.apple.com/quicktime). |