View all of the Antarctic Hemisphere daily maps of total ozone for July 1999. Satellite instruments monitor the ozone layer, and we use their data to create the images that depict the amount of ozone.

Click any map image to bring up a new page with a high-resolution map.

Animations

	360x240		720x486		1280x720	1920x1080
July	mp4	mpg	mp4	mpg	mp4	mp4

Data source

The data for this month are from the NASA Earth Probe TOMS satellite.

Missing areas (bad orbits and polar night) are filled using assimilated ozone data from the Modern-Era Retrospective analysis for Research and Applications (MERRA) assimilation, produced by the Goddard Earth Observing System Data Assimilation System (GEOS DAS). MERRA uses a version of the GEOS model with the Gridpoint Statistical Interpolation (GSI) atmospheric analysis developed jointly with NOAA/NCEP/EMC.

Bulk access

The following links will provide you with bulk access to the images, animations, and raw satellite data.

July 1999

Palette relating map colors to ozone values

<<Jul. 1998

<Jun. 1999

Aug. 1999>

Jul. 2000>>

The false-color view of the monthly-averaged total ozone over the Antarctic pole. The blue and purple colors are where there is the least ozone, and the yellows and reds are where there is more ozone.