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DOI	10.5194/acp-20-6037-2020
	Solar UV radiation measurements in Marambio, Antarctica, during years 2017-2019
	Aun M.; Lakkala K.; Sanchez R.; Asmi E.; Nollas F.; Meinander O.; Sogacheva L.; De Bock V.; Arola A.; De Leeuw G.; Aaltonen V.; Bolsée D.; Cizkova K.; Mangold A.; Metelka L.; Jakobson E.; Svendby T.; Gillotay D.; Van Opstal B.
发表日期	2020
ISSN	16807316
起始页码	6037
结束页码	6054
卷号	20 期号:10
英文摘要	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_ S; 56.62_ 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 kJm-2, while in 2018/2019 it was 23% larger (2.37 kJm-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. © 2020 BMJ Publishing Group. All rights reserved.
语种	英语
scopus关键词	cloud cover; irradiance; ozone depletion; polar vortex; solar radiation; stratosphere; ultraviolet radiation; Antarctica; Marambio Station; Seymour Island; West Antarctica
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/152900
作者单位	Climate Research Programme, Finnish Meteorological Institute, Helsinki, Finland; Tartu Observatory, University of Tartu, Tõravere, Estonia; Space and Earth Observation Centre, Finnish Meteorological Institute, Sodankylä, Finland; Servicio Meteorológico Nacional, Buenos Aires, Argentina; Royal Meteorological Institute of Belgium, Brussels, Belgium; Royal Belgian Institute for Space Aeronomy, Brussels, Belgium; Solar and Ozone Observatory, Czech Hydrometeorological Institute, Hradec Králové, Czech Republic; Institute of Geography, Masaryk University, Brno, Czech Republic; NILU - Norwegian Institute for Air Research, Kjeller, Norway; RandD Satellite Observations, Royal Netherlands Meteorological Institute (KNMI), De Bilt, Netherlands
推荐引用方式 GB/T 7714	Aun M.,Lakkala K.,Sanchez R.,et al. Solar UV radiation measurements in Marambio, Antarctica, during years 2017-2019[J],2020,20(10).
APA	Aun M..,Lakkala K..,Sanchez R..,Asmi E..,Nollas F..,...&Van Opstal B..(2020).Solar UV radiation measurements in Marambio, Antarctica, during years 2017-2019.Atmospheric Chemistry and Physics,20(10).
MLA	Aun M.,et al."Solar UV radiation measurements in Marambio, Antarctica, during years 2017-2019".Atmospheric Chemistry and Physics 20.10(2020).