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| | Climate Prediction Center - Stratosphere: SBUV-2 Total Ozone - Ozone Hole (Site not responding. Last check: 2007-11-03) |
 | | The ozone hole is defined geographicaly as the area wherein the total ozone amount is less than 220 Dobson Units. |
 | | This is graphically illustrated in ozone hole area versus Julian day plots for the years: 1979-80, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005. |
 | | The current year's ozone hole plot shows the progression of this year's ozone hole (red line) and is placed in reference with last year's ozone hole conditions (blue line) and conditions over the previous ten years. |
| www.cpc.ncep.noaa.gov /products/stratosphere/sbuv2to/ozone_hole.shtml (541 words) |
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