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The Zugspitze/Hohenpeissenberg Global Station co-ordinates its activities and co-operates 
closely with the observatories at the Hoher Sonnblick in Austria and the Jungfraujoch in 
Switzerland. Its neighbouring stations are situated to the East in Tibet, to the North at the 
Arctic Circle, to the West on the Irish Isles and to the South on the Canary Islands. What 
makes the GAW network so unique is the fact that the concentration measurements are 
made in the free troposphere above a densely populated and comparatively high industrial 
ised area. The Zugspitze/Hohenpeissenberg GAW station largely fulfils the 10 GCMP. 
Schauinsland: (regional station) 
The air quality measuring site exists since the middle of the sixties. It was founded by the 
German Research Foundation ('Deutsche Forschungsgemeinschaft', DFG) as part of a Ger 
man monitoring network to investigate the composition of unpolluted air and background air 
pollution. In 1974 the network was integrated into the then newly established UBA. In the 
1960s and early 1970s a lot of pioneering work concerning the development of methods to 
measure trace substances in air was necessary. Some measuring systems have been de 
veloped by the station staff themselves. Today, the site is one of seven stations of the Ger 
man air monitoring network operated by the UBA. It serves for long-term monitoring of long- 
range transboundary air pollution within the scope of international programmes. 
Over the years, the observational programme has changed according to new and emerging 
questions. While at the beginning sulphur dioxide was a main concern, its concentration in 
Germany today is very low. At the beginning of the nineties the tropospheric ozone became 
more important and a national ozone early warning system was installed. Recently one focus 
is on components having global effects, such as greenhouse gases. 
Neuglobsow: (regional station) 
From 1979 to 1991 the Stechlin Lake District station has been operated as a background site 
to monitor air pollutants and precipitation as well as their effects on ecosystems. In 1991 the 
monitoring site Neuglobsow was integrated into the German air monitoring network operated 
by the UBA. 
The monitoring site Neuglobsow now serves as a regional GAW station as well as an EMEP 
site (European Monitoring and Evaluation Programme). In addition, Neuglobsow is one of 
two German Integrated Monitoring sites, the international cooperative programme of the 
Convention on Long-range Transboundary Air Pollution (CLRTAP) which investigates the 
effects of air pollutants on ecosystems. 
DLR’s WDC-RSAT is a contribution to GAW as one of the WMO-GAW world data centres. 
Additionally, WDC-RSAT serves the German Environmental Research Station Schneef- 
ernerhaus (UFS), which is also a WMO-GAW Global Station, with all aspects related to data 
management. WDC-RSAT allows the UFS access to satellite based data (often in near-real 
time) and services as well as to related value added products. 
2.3 Other networks for monitoring weather and atmospheric com 
position 
2.3.1 DWD - National observing network 
In addition to the stations in the global monitoring networks (GAW, GUAN, GSN), DWD op 
erates a national observing network that regularly collects meteorological data in Germany. 
The data is subject to quality assurance measures and then chronologically archived in a 
climatological database. Most of these time series begin in the 1940s, although some date 
back to the 19th and 18th centuries.