Microwave observations of stratospheric trace species in Ny-Ålesund

Updated 2002-02-01

Microwave radiometers are part of the standard instrumentation at primary NDSC stations and are due to their long-term stability and self calibrating technique especially useful for monitoring purposes. Altitude profiles are retrieved from the shape of the pressure broadened thermally induced emission line of the observed species. The instruments for the observation of stratospheric ozone, chlorine monoxide and water vapour at the Koldewey Station in Ny-Ålesund were developed at the University of Bremen and upgrades and improvements are regularly carried out. The instruments have been automated during recent years and ozone and water vapour observation on Spitsbergen are carried out all year round. Chlorine monoxide is only observed in late winter and early spring, when enhanced concentrations in the lower stratosphere are to be expected. Routine operation and maintenance are done by the station engineer. Data analysis is carried out at the University of Bremen.

Time frame

Project time span
1993 - 2050
Data collection
1994 -
Data processing
1996 -
Data reporting
1996 -

Contact information

Contact person
Klaus Künzi
Inst. f. Umweltphysik, Uni Bremen Postf. 330440 28334 Bremen
+49 421 218 4419
+49 421 218 4555
Other project contacts
Michael Hoock, mikel@uni-bremen.de

Parameters and Media

Parameter groups measured/observed/modelled
Climate change effects
Media sampled/studied/modelled


Regions studied
Climate change effects
Climate change effects

Data availability

Samples/specimens archived in specimen banks?

Methods & Procedures

Not specified

Additional Information

Is this a bi- AND multi-lateral project (i.e. a project involving cooperation between different countries)?
Other institutes involved in the project

Institut für Fernerkundung (Uni Bremen) Danish Meteorological Institute (Copenhagen) Norwegian Institute for Air Research (Kjeller) University of Bern (Switzerland), University of Liege (Belgium) Centre National de la Recherche Scientifique (France) University of Bordeaux (France) Swedish Environmental Research Institute (Gothenburg)

Is this project reporting to other organizations/programmes?

Network for the Detection of Stratospheric Change (NDSC)

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