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@article{1688716,
author = {Aun, Margit and Lakkala, Kaisa and Sanchez, Ricardo Daniel and Asmi, Eija and Nollas, Fernando and Meinander, Outi and Sogacheva, Larisa and De Bock, Veerle and Arola, Antti and de Leeuw, Gerrit and Aaltonen, Veijo and Bolsée, David and Čížková, Klára and Mangold, Alexander and Metelka, Ladislav and Jakobson, Erko and Svendby, Tove and Gillotay, Didier and Van Opstal, Bert},
article_location = {Göttingen (Germany)},
article_number = {10},
doi = {http://dx.doi.org/10.5194/acp-20-6037-2020},
keywords = {bandwidth filter instrument; ozone-column amount; aerosol products; research station; irradiance},
language = {eng},
issn = {1680-7316},
journal = {Atmospheric Chemistry and Physics},
title = {Solar UV radiation measurements in Marambio, Antarctica, during years 2017-2019},
url = {https://doi.org/10.5194/acp-20-6037-2020},
volume = {20},
year = {2020}
}
TY - JOUR
ID - 1688716
AU - Aun, Margit - Lakkala, Kaisa - Sanchez, Ricardo Daniel - Asmi, Eija - Nollas, Fernando - Meinander, Outi - Sogacheva, Larisa - De Bock, Veerle - Arola, Antti - de Leeuw, Gerrit - Aaltonen, Veijo - Bolsée, David - Čížková, Klára - Mangold, Alexander - Metelka, Ladislav - Jakobson, Erko - Svendby, Tove - Gillotay, Didier - Van Opstal, Bert
PY - 2020
TI - Solar UV radiation measurements in Marambio, Antarctica, during years 2017-2019
JF - Atmospheric Chemistry and Physics
VL - 20
IS - 10
SP - 6037-6054
EP - 6037-6054
PB - European Geosciences Union
SN - 16807316
KW - bandwidth filter instrument
KW - ozone-column amount
KW - aerosol products
KW - research station
KW - irradiance
UR - https://doi.org/10.5194/acp-20-6037-2020
L2 - https://doi.org/10.5194/acp-20-6037-2020
N2 - In March 2017, measurements of downward global irradiance of ultraviolet (UV) radiation were started with a multichannel GUV-2511 radiometer in Marambio, Antarctica (64.23 degrees S; 56.62 degrees W), by the Finnish Meteorological Institute (FMI) in collaboration with the Servicio Meteorologico Nacional (SMN). These measurements were analysed and the results were compared to previous measurements performed at the same site with the radiometer of the Antarctic NILU-UV network during 2000-2008 and to data from five stations across Antarctica. In 2017/2018 the monthly-average erythemal daily doses from October to January were lower than those averaged over 2000-2008 with differences from 2.3 % to 25.5 %. In 2017/2018 the average daily erythemal dose from September to March was 1.88 kJ m(-2), while in 2018/2019 it was 23 % larger (2.37 kJ m(-2)). Also at several other stations in Antarctica the UV radiation levels in 2017/2018 were below average. The maximum UV indices (UVI) in Marambio were 6.2 and 9.5 in 2017/2018 and 2018/2019, respectively, whereas during years 2000-2008 the maximum was 12. Cloud cover, the strength of the polar vortex and the stratospheric ozone depletion are the primary factors that influence the surface UV radiation levels in Marambio. The lower UV irradiance values in 2017/2018 are explained by the high ozone concentrations in November, February and for a large part of October. The role of cloud cover was clearly seen in December, and to a lesser extent in October and November, when cloud cover qualitatively explains changes which could not be ascribed to changes in total ozone column (TOC). In this study, the roles of aerosols and albedo are of minor influence because the variation of these factors in Marambio was small from one year to the other. The largest variations of UV irradiance occur during spring and early summer when noon solar zenith angle (SZA) is low and the stratospheric ozone concentration is at a minimum (the so-called ozone hole). In 2017/2018, coincident low total ozone column and low cloudiness near solar noon did not occur, and no extreme UV indices were measured.
ER -
AUN, Margit, Kaisa LAKKALA, Ricardo Daniel SANCHEZ, Eija ASMI, Fernando NOLLAS, Outi MEINANDER, Larisa SOGACHEVA, Veerle DE BOCK, Antti AROLA, Gerrit DE LEEUW, Veijo AALTONEN, David BOLSÉE, Klára ČÍŽKOVÁ, Alexander MANGOLD, Ladislav METELKA, Erko JAKOBSON, Tove SVENDBY, Didier GILLOTAY a Bert VAN OPSTAL. Solar UV radiation measurements in Marambio, Antarctica, during years 2017-2019. \textit{Atmospheric Chemistry and Physics}. Göttingen (Germany): European Geosciences Union, 2020, roč.~20, č.~10, s.~6037-6054. ISSN~1680-7316. Dostupné z: https://dx.doi.org/10.5194/acp-20-6037-2020.
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