Switzerland

Three persons are responsible for UV monitoring operations within Switzerland; all within one organization, MeteoSwiss. Laurent Vuilleumier runs 4 instruments in Davos, the Jungfraujoch, Locarno, and Payerne. At the national level , the data produced at these sites are part of the Swiss Atmospheric Radiation Monitoring Program (CHARM) network. At the international level, the Payerne station is part of the Baseline Surface Radiation Network (BSRN). All instruments have been calibrated frequently in the past.

Rene Stubi and Herbert Schill, also of MeteoSwiss maintain one instrument located in Arosa, Switzerland. This instrument is calibrated every year and participates in inter-comparsion exercises. Both a Brewer Mark II and a Mark III are in operation at this time. Both participate in the WMO's Global Atmospheric Watch (GAW) program.

Contact Information:

Laurent Vuilleumier MeteoSwiss Station aerologique de Payerne, POB 316 CH-1530 Payerne Switzerland tel: +41 26 662 6306 fax: +41 26 662 6212 laurent.vuillewmier@meteoswiss.ch Rene Stubi MeteoSwiss Station aerologique de Payerne, POB 316 CH-1530 Payerne Switzerland tel: +41 26 662 6229 fax: +41 26 662 6212 rene.stubi@meteoswiss.ch Herbert Schill Lichtklimatisches Observatorium MeteoSchweiz, Zum Steinbruch CH-7050 Arosa Switzerland tel +41 81 377 2616 fax +41 26 662 6212 herbert.schill@meteoswiss.ch

Instruments in Switzerland
Instruments	Network	Location	Nearest Town	Lat/Lon	Installed
Solar Light 501A	CHARM	Davos	Davos	46.82N, 9.85E	Jan. 1995
Brewer Mark III	CHARM	Jungfraujoch	Interlaken	46.55N, 7.99E	Jul. 1996
Brewer Mark IV	CHARM	Locarno	Locarno	46.18N, 8.78E	May 2001
Brewer Mark IV	CHARM/BSRN	Payerne	Payerne	46.81N, 6.94E	Jul. 1997
Brewer Mark II & Mark III	GAW	Arosa	Arosa	46.78N, 9.67E	Sep. 1988

Switzerland

Compiled by E.C. Weatherhead, Gregory Noonan, and ENV/AREP/WMO.