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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/acp-2017-1193
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
07 Feb 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).
UV measurements at Marambio and Ushuaia during 2000–2010
Kaisa Lakkala1,2, Alberto Redondas3, Outi Meinander1, Laura Thölix1, Britta Hamari1, Antonio Fernando Almansa3, Virgilio Carreno3, Guillermo Deferrari4,5, Hector Ochoa6, Germar Bernhard7, Ricardo Sanchez8, and Gerardus de Leeuw1 1Finnish Meteorological Institute, Climate Research, Helsinki, Finland
2Finnish Meteorological Institute, Arctic Research, Sodankylä, Finland
3Izaña Atmospheric Research Center, Agencia Estatal de Meteorología, Tenerife, Spain
4Centro Austral de Investigaciones Cientificas (CADIC/CONICET), Ushuaia, Argentina
5Universidad Nacional de Tierra del Fuefo, Ushuaia, Argentina
6Dirección Nacional del Antártico – Instituto Antártico Argentino, Buenos Aires, Argentina
7Biospherical Instruments, Inc., San Diego, USA
8Servicio Meteorológico Nacional, Argentina
Abstract. Solar ultraviolet (UV) irradiances were measured with NILU-UV multichannel radiometers at Ushuaia (54° S) and Marambio (64° S) between 2000 and 2013. The measurements were part of the Antarctic NILU-UV network, which was started in cooperation between Spain, Argentina and Finland. The erythemally weighted UV irradiance time series of both stations were analyzed for the first time in this study. The quality assurance procedures included a traveling refence instrument to transfer the irradiance scale to the stations. The time series were homogenized and high quality measurements were available for the period 2000–2010. During this period UV indices of 11 or more were measured on 5 and 35 days at Marambio and Ushuaia, correspondingly. At Marambio, the peak daily maximum UV index of 12 and dailydoses of around 7 kJ/m2 were measured in November 2007. Typically the highest UV daily doses were at both stations around 6 kJ/m2, and they occurred on time periods, when the station was inside the polar vortex with very low total ozone amount. At both stations, dailydoses of late November could even exceed those of summer. At Marambio, in some years, also dailydoses in October can be as high as those during the summer. At Ushuaia, the peak daily maximum UV index of 13 was measured twice: in November 2003 and 2009. Also during those days, the station of Ushuaia was inside the polar vortex.

Citation: Lakkala, K., Redondas, A., Meinander, O., Thölix, L., Hamari, B., Almansa, A. F., Carreno, V., Deferrari, G., Ochoa, H., Bernhard, G., Sanchez, R., and de Leeuw, G.: UV measurements at Marambio and Ushuaia during 2000–2010, Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2017-1193, in review, 2018.
Kaisa Lakkala et al.
Kaisa Lakkala et al.
Kaisa Lakkala et al.

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Short summary
Solar ultraviolet (UV) irradiances measured at Ushuaia (54° S) and Marambio (64° S) between 2000 and 2013. The measurements were part of the Antarctic NILU-UV network, which was maintained as cooperation between Spain, Argentina and Finland. The time series of the network were analyzed for the first time in this study. At both stations maximum UV indices and dailydoses were measured when spring time ozone loss episodes occurred. Maximum UV index was 13 and 12 in Ushuaia and Marambio, respectively.
Solar ultraviolet (UV) irradiances measured at Ushuaia (54° S) and Marambio (64° S) between 2000...
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