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.
For more information, please visit:
September Ozone Hole
Ozone Fact Sheet
Note: Often times, due to the size, browsers have a difficult time opening and displaying images. If you experiece an error when clicking on an image link, please try directly downloading the image (using a right click, save as method) to view it locally.
This image originally appeared on the Earth Observatory. Click here to view the full, original record.