Global Ozone Monitoring Experiment (GOME) Data Products from the Institute of Environmental Physics and Remote Sensing (IUP/ife), Germany

In collaboration with the DLR German Remote Sensing Data Center
(DLR/DFD), and the European Space Agency (ESA), the Bremen Institute
of Environmental Physics and Remote Sensing (ife/iup) provided near
real-time GOME ozone maps during the arctic winter 1997 (January 24,
1997 - March 31, 1997). The delivery of near-real-time total ozone
maps and vertical profiles by ife/iup supported the coordination of
aircraft and balloon experiments as part of the European arctic winter
campaign in and around Kiruna, Sweden (POLSTAR, POLECAT,
ADEOS-Validation).

The investigation of the GOME vertical profile distribution in the
northern hemisphere in connection with the dynamics of the polar
vortex and ozone loss during winter/spring 1997 is one major goal in
the campaign activities. Preliminary height-resolved ozone and total
column ozone images are presented. Near-real-time height-resolved
ozone maps are only available for the time of the arctic campaign
until March 31, 1997. Since the support of NRT GOME Level-2 data
(total ozone) has been continued, total ozone maps from the same day
are still provided on this web site. The 1-day total ozone images are
updated every six hours.

The ozone maps are produced at ife/iup using the Level-2 data (total
columns of ozone) provided from the new Kiruna-based GDP (GOME Data
Processor) of the DLR/DFD. The ESA station in Kiruna is one of five
ground stations receiving the global ERS-2 transmission. Ten out of
the daily fourteen GOME orbits are transmitted to Kiruna. In the near
future three additional orbits from the Mapolamos and Gatineau
stations will be also available. The ozone vertical profiles are
generated at the University of Bremen using the GDP Level-1 data
(radiometrically calibrated sun and earthshine spectra).

GOME Global Ozone Distributions
-------------------------------
With the current scan strategy (960-km swath) it takes GOME three days
to achieve global coverage (for details see the GOME instrument
description). For each month (beginning with July 1996) the plots on
this page show four three-day periods of GOME measured total ozone
values as indicated in the plot titles. This gives an impression of
the evolution of the global ozone distribution during one month.

Vertical column amounts of ozone are operationally derived from the
GOME spectra at DLR-DFD using the DOAS method. At ife/iup the
irregularly spaced measurement points are gridded to a regular
lat-long grid before being mapped. White space on the maps is due to
data gaps.

[Summary Adapted from the IUP/ife Home Page]