Effect of ambient temperature on Robertson–Berger-type erythemal dosimeters

• DOI: 10.1364/ao.41.004273
• Publication Date: 2007-08-17T12:31:30Z
• Authors: Martin Huber; Mario Blumthaler; Josef Schreder; Alkis Bais; Chrysanthi Topalo...
• Keywords: Diurnal temperature variation

To quantify the effect of ambient temperature on voltage signal Solar Light UV-Biometers, spectral response functions two instruments were determined in laboratory under various external conditions. Despite biometer's internal stabilization, a increase 20 degrees C at outside an instrument's housing resulted reduction by as much 10% UVB range and factor 2 UVA range, depending individual instrument its relative humidity. The significance this for outdoor measurements is demonstrated data from intercomparison campaign erythemal radiometers Thessaloniki, Greece, organized Laboratory Atmospheric Physics (Aristotle University Thessaloniki), Cooperation Science Technology (European Commission), World Meteorological Organization. On 16 September 1999, 12 Biometers showed significant diurnal variation their sensitivity (as some instruments), which can be explained through heating instruments' housings due to direct solar radiation.