Depth and size of the Antarctic ozone hole in 1998-2007

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ozone field

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  depth ozone hole
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   size ozone hole
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The depth (above) and size (top-right) of the Antarctic ozone hole, and the ozone loss (right) at 12h GMT of each day as extracted from GOME (1996-2002) and SCIAMACHY (2003-today) Assimilated Ozone Fields. The values are based on the GDP v4.0 ozone columns processed for the PROMOTE project and the TOSOMI v0.4 ozone columns processed for the TEMIS project.

Definitions used for these graphs:

  • The depth of the ozone hole is the lowest ozone column value in Dobson Units (DU) for latitudes below 30° South.
  • The size of the ozone hole is the area on the globe in million square km of ozone column values below 220 DU.
  • The ozone loss is the amount of ozone in megaton necessary to fill the ozone hole to 220 DU over the whole area.
Note that the Antarctic continent is about 14 million km², the USA is just over 9 million km², Italy is about 0.3 million km², and The Netherlands only 0.04 million km².
(Graphs similar to the top two are also derived from TOMS data.) 		  ozone loss
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last modified: 26 September 2006
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