Monitoring the Antarctic Ozone Hole featuring:

EP/TOMS, ERS-2/GOME, ENVISAT/SCIAMACHY and the 3D CTM ROSE

The products presented here are the latest available images of ozone vertical column densities, ozone at 56 hPa, ozone loss, chlorine oxide and polar stratospheric clouds over the south pole. The data used to produce these information products come from various sensors and are the result of several algorithms.

Under each image example you will find links to information on the products, the sensors, and algorithms used. Please note that archival images and data for the TOMS-based products are available online. Archival data for the GOME and SCIAMACHY-based products are available upon request.

Near Real Time Ozone Vertical Column based on ERS-2/GOME
Download this Image: GIF, TIFF, Postscript Download this Data: HDF	Download this Image: GIF, TIFF, Postscript
GOME data for the southern hemisphere was provided from October 11 to December 3, 2003 by DLR's Antarctic Receiving Station in O'Higgins.
TOMS-based Ozone Vertical Column	SCIAMACHY-based Ozone Vertical Column
	" width="320" alt="Click for larger image" border="0">
Download this image: GIF, TIFF, Postscript	Download this image: GIF, Postscript
The EP/TOMS ozone maps are derived by applying a spectral statistical technique (Harmonic Analysis) to EP/TOMS data as provided by the Ozone Processing Team of NASA GSFC. More...
Ozone Distribution at 56 hPa	Daily Chemical Ozone Loss at 56 hPa
The analysis was derived by assimilating EP/TOMS data into the 3D chemical transport model ROSE. The model covers an altitude range from 10 to 60 km. More...	Daily 24h integrated chemical ozone loss over the southern hemisphere in 56 hPa (negative values indicate ozone loss). The presence of ClOx can cause high loss rates.
ClOx Distribution at 56 hPa	NAT PSC and Temperature at 56 hPa
ClOx analysis at 56 hPa as derived by the 3D chemical transport model ROSE.	Polar Stratospheric Clouds (PSC's) consisting of Nitric Acid Trihydrate particles (NAT) can form where temperatures fall below 195 K. They strongly facilitate the chemical production of chlorine species.
Dynamic Activity Index - Planetary Wave Number 1	Dynamic Activity Index - Planetary Wave Number 2
Download this image: GIF, TIFF, Postscript / Data: ASCII	Download this iImage: GIF, TIFF, Postscript / Data: ASCII
The Dynamic Activity Index, such as DAI-W1 and DAI-W2, is defined as the hemispheric mean of the zonal amplitude of the planetary wave numbers 1 and 2, respectively. A high DAI-W1 indicates a strong wave number 1 and an off-pole eccentricity of the polar vortex. An increase in DAI-W2 stands for an elongation of the vortex.

For any Level 3 data or image from TOMS browse our TOMS archive (HDF, GIF, TIFF, Postscript).

Historical data resulting from other sensors if available upon request.

For questions or comments please contact: Thilo Erbertseder or Frank Baier

The members of the Ozone Processing Team of NASA Goddard Space Flight Center are acknowledged for the TOMS data.