World Meteorological Organization: World Calibration Centre for UV Radiation in Davos, Switzerland.
World Meteorological Organization: Ushuaia GAW Global station
World Meteorological Organization: South Pole GAW Global station
World Meteorological Organization: Schneefernerhaus Regional GAW station
World Meteorological Organization: Sauna -1 comparison campaign in Sodankylä, Finland
World Meteorological Organization: Samoa GAW Global station
World Meteorological Organization: Radiation sensors at Tamanrasset GAW Global station
World Meteorological Organization: Pyramid GAW Global station in Himalaya
World Meteorological Organization: Passive sampler installation at Bukit Kototabang GAW Global station
World Meteorological Organization: Pallas GAW Global station
World Meteorological Organization: Ozone observations at the GAW Global station Lauder
World Meteorological Organization: Neumayer GAW Global station, Antarctica
World Meteorological Organization: Mt. Kenya GAW Global station
World Meteorological Organization: Monte Cimone GAW Global station
World Meteorological Organization: Minamitorishima GAW Global station
World Meteorological Organization: Mauna Loa GAW Global station
World Meteorological Organization: Mace Head GAW Global station
World Meteorological Organization: Mace Head GAW Global station
World Meteorological Organization: Jungfraujoch GAW Global station
World Meteorological Organization: Izaña GAW Global station
World Meteorological Organization: Interior of the Mt. Kenya GAW Global station-Kenya
World Meteorological Organization: Instruments installation at Bukit Kototabang GAW Global station in 2004-Indonesia
World Meteorological Organization: Instruments at the Izana GAW Global station-Spain
World Meteorological Organization: Instrumentation at the Cape Point GAW Global station-South Africa
World Meteorological Organization: Instrumentation at Assekrem GAW Global station-Algeria
World Meteorological Organization: Inside the Pallas GAW Global station-Finland
World Meteorological Organization: Inside the Barrow GAW Global station-United States
World Meteorological Organization: Inside of the Cape Point GAW Global station-South Africa
World Meteorological Organization: Inlet at the Pallas GAW Global station-Finland
World Meteorological Organization: In the laboratory of Japan Meteorological Agency in 2005-Japan