Jülich Ozone Sonde Intercomparison Experiment


The Jülich Ozone Sonde Intercomparison Experiment is a WMO (= World Meteorological Organization) activity towards implementing a global quality assurance plan for ozone sondes in routine use today around the world to watch global changes of ozone in the troposphere and stratosphere.

In order to assess the performance of the different types of ozone sondes the environmental simulation chamber at the Forschungszentrum Jülich (Germany) is established as World Calibration Center for Ozone Sondes (WCCOS). The simulation chamber enables control of pressure, temperature and ozone concentration and can simulate flight conditions of ozone soundings up to an altitude of 35 km., whereby an accurate UV-photometer serves as a reference.


  • Institute of Energy and Climate Research (IEK)
  • Troposphere (IEK-8)
Building 05.2 /
Room 3046
+49 2461/61-3290

Last Modified: 19.10.2023