Antarctic Ozone Hole, October 1999

Antarctic Ozone Hole, October 1999
  • Credit:

    Images by Robert Simmon, Research and Professional Services

Historically, the Antarctic ozone hole is largest during the month of October. This image shows the latest data from the Total Ozone Mapping Spectrometer (TOMS) Earth Probe, for the month of October 1999. Values below 150 Dobson Units (bright blue) are considered extremely low.

Ozone palette

For more information, please visit:
September Ozone Hole
Ozone Fact Sheet
TOMS Project


  • Visualization Date:

    November 15, 1999
  • Sensor(s):



NASA - National Aeronautics and Space Administration