Abstract. This paper describes the laboratory facilities at the Finnish Meteorological Institute -Arctic Research Centre (FMI-ARC, http://fmiarc.fmi.fi). They comprise an optical laboratory, a facility for biological studies, and an office. A dark room has been built, in which an optical table and a fixed lamp test system are set up, and the electronics allow high-precision adjustment of the current. The Brewer spectroradiometer, NILU-UV multifilter radiometer, and Analytical Spectral Devices (ASD) spectroradiometer of the FMI-ARC are regularly calibrated or checked for stability in the laboratory. The facilities are ideal for responding to the needs of international multidisciplinary research, giving the possibility to calibrate and characterize the research instruments as well as handle and store samples.
16The polar regions of the Earth are characterized with low solar elevation angles, cold temperatures 17 and large amount of snow and ice. Under the harsh polar conditions, good quality in situ 18 measurements of incoming and outgoing solar radiation, and surface albedo, is a major challenge.
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