Antarctic network of lamp-calibrated multichannel radiometers for continuous ozone and uv radiation data

Abstract

Three NILU-UV multichannel radiometers have been installed in 1999 atthe Argentinian sites of Ushuaia (54S), Marambio (64S) and Belgrano-II(77S) in order to continuously monitor UV radiation, photosyntheticallyactive radiation and total ozone. The measurements were established byINM, Spain in collaboration with FMI, Finland, DNA-IAA, Argentina andCADIC, Argentina to observe and characterize the spatial and temporalevolution of ozone and ultraviolet radiation in the Antarctic region.Special attention has been given to the quality control and qualityassurance of the measurements under harsh climatological conditions. Theozone and UV time series of 2000-2006 were calibrated using a polynomialfit for lamp measurements performed every second week all year round.The gaps in these data are minimal, with almost no data missing, and thedata products are available fromtarget="_blank">http://www.polarvortex.org in near realtime. The data products include the erythemally-weighted UV, UVB and UVAradiation, photosynthetically active radiation (PAR), total ozone(O3) and a cloud parameter (CLT). For UV data, dose rates aswell as daily doses are available; from these the maximum measured UVindices (UVI), during 2000-2006, were 12.0, 9.7 and 8.1 at Ushuaia,Marambio and Belgrano-II, respectively.