•T. Warneke1, A. Schulz2, V. Velazco1,
J. Notholt1, T. v.Clarmann3, T. Blumenstock3
und O. Schrems2
1Institut fuer Umweltphysik, Universitaet Bremen
2Alfred Wegener Institut
3Forschungszentrum Karlsruhe
The study of the isotopic composition of atmospheric trace gases provides
information on the sources and sinks of each gas and helps to understand
transport and chemical processes in the atmosphere. As an example, variabilities
in the water isotopes can help to understand transport processes; the ozone
fractionation allows to investigate its formation. High-resolution solar
absorption spectra in the infrared were obtained at the ground in Spitzbergen,
Bremen, Tenerife and during several cruises onboard the research vessel
Polarstern on the Atlantic between 80N and 70S. In addition to the ground-based
observations MIPAS/ENVISAT-satellite data are used. The suitability of
the high resolution infrared spectroscopy to study the isotopic variability
of trace gases is investigated and first results of the latitudinal variations
are presented.