Reconstruction and analysis of erythemal UV radiation time series from Hradec Králové (Czech Republic) over the past 50 years

This paper evaluates the variability of erythemal ultraviolet (EUV) radiation from Hradec Králové (Czech Republic) in the period 1964–2013. The EUV radiation time series was reconstructed using a radiative transfer model and additional empirical relationships, with the final root mean square error o...

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Published in:Atmospheric Chemistry and Physics
Main Authors: K. Čížková, K. Láska, L. Metelka, M. Staněk
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2018
Subjects:
Online Access:https://doi.org/10.5194/acp-18-1805-2018
https://doaj.org/article/4a372d0ed13249d28ad8f70379042ab2
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spelling ftdoajarticles:oai:doaj.org/article:4a372d0ed13249d28ad8f70379042ab2 2023-05-15T13:11:53+02:00 Reconstruction and analysis of erythemal UV radiation time series from Hradec Králové (Czech Republic) over the past 50 years K. Čížková K. Láska L. Metelka M. Staněk 2018-02-01T00:00:00Z https://doi.org/10.5194/acp-18-1805-2018 https://doaj.org/article/4a372d0ed13249d28ad8f70379042ab2 EN eng Copernicus Publications https://www.atmos-chem-phys.net/18/1805/2018/acp-18-1805-2018.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-18-1805-2018 1680-7316 1680-7324 https://doaj.org/article/4a372d0ed13249d28ad8f70379042ab2 Atmospheric Chemistry and Physics, Vol 18, Pp 1805-1818 (2018) Physics QC1-999 Chemistry QD1-999 article 2018 ftdoajarticles https://doi.org/10.5194/acp-18-1805-2018 2022-12-30T20:59:44Z This paper evaluates the variability of erythemal ultraviolet (EUV) radiation from Hradec Králové (Czech Republic) in the period 1964–2013. The EUV radiation time series was reconstructed using a radiative transfer model and additional empirical relationships, with the final root mean square error of 9.9 %. The reconstructed time series documented the increase in EUV radiation doses in the 1980s and the 1990s (up to 15 % per decade), which was linked to the steep decline in total ozone (10 % per decade). The changes in cloud cover were the major factor affecting the EUV radiation doses especially in the 1960s, 1970s, and at the beginning of the new millennium. The mean annual EUV radiation doses in the decade 2004–2013 declined by 5 %. The factors affecting the EUV radiation doses differed also according to the chosen integration period (daily, monthly, and annually): solar zenith angle was the most important for daily doses, cloud cover, and surface UV albedo for their monthly means, and the annual means of EUV radiation doses were most influenced by total ozone column. The number of days with very high EUV radiation doses increased by 22 % per decade, the increase was statistically significant in all seasons except autumn. The occurrence of the days with very high EUV doses was influenced mostly by low total ozone column (82 % of days), clear-sky or partly cloudy conditions (74 % of days) and by increased surface albedo (19 % of days). The principal component analysis documented that the occurrence of days with very high EUV radiation doses was much affected by the positive phase of North Atlantic Oscillation with an Azores High promontory reaching over central Europe. In the stratosphere, a strong Arctic circumpolar vortex and the meridional inflow of ozone-poor air from the southwest were favorable for the occurrence of days with very high EUV radiation doses. This is the first analysis of the relationship between the high EUV radiation doses and macroscale circulation patterns, and therefore more attention ... Article in Journal/Newspaper albedo Arctic North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 18 3 1805 1818
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic Physics
QC1-999
Chemistry
QD1-999
spellingShingle Physics
QC1-999
Chemistry
QD1-999
K. Čížková
K. Láska
L. Metelka
M. Staněk
Reconstruction and analysis of erythemal UV radiation time series from Hradec Králové (Czech Republic) over the past 50 years
topic_facet Physics
QC1-999
Chemistry
QD1-999
description This paper evaluates the variability of erythemal ultraviolet (EUV) radiation from Hradec Králové (Czech Republic) in the period 1964–2013. The EUV radiation time series was reconstructed using a radiative transfer model and additional empirical relationships, with the final root mean square error of 9.9 %. The reconstructed time series documented the increase in EUV radiation doses in the 1980s and the 1990s (up to 15 % per decade), which was linked to the steep decline in total ozone (10 % per decade). The changes in cloud cover were the major factor affecting the EUV radiation doses especially in the 1960s, 1970s, and at the beginning of the new millennium. The mean annual EUV radiation doses in the decade 2004–2013 declined by 5 %. The factors affecting the EUV radiation doses differed also according to the chosen integration period (daily, monthly, and annually): solar zenith angle was the most important for daily doses, cloud cover, and surface UV albedo for their monthly means, and the annual means of EUV radiation doses were most influenced by total ozone column. The number of days with very high EUV radiation doses increased by 22 % per decade, the increase was statistically significant in all seasons except autumn. The occurrence of the days with very high EUV doses was influenced mostly by low total ozone column (82 % of days), clear-sky or partly cloudy conditions (74 % of days) and by increased surface albedo (19 % of days). The principal component analysis documented that the occurrence of days with very high EUV radiation doses was much affected by the positive phase of North Atlantic Oscillation with an Azores High promontory reaching over central Europe. In the stratosphere, a strong Arctic circumpolar vortex and the meridional inflow of ozone-poor air from the southwest were favorable for the occurrence of days with very high EUV radiation doses. This is the first analysis of the relationship between the high EUV radiation doses and macroscale circulation patterns, and therefore more attention ...
format Article in Journal/Newspaper
author K. Čížková
K. Láska
L. Metelka
M. Staněk
author_facet K. Čížková
K. Láska
L. Metelka
M. Staněk
author_sort K. Čížková
title Reconstruction and analysis of erythemal UV radiation time series from Hradec Králové (Czech Republic) over the past 50 years
title_short Reconstruction and analysis of erythemal UV radiation time series from Hradec Králové (Czech Republic) over the past 50 years
title_full Reconstruction and analysis of erythemal UV radiation time series from Hradec Králové (Czech Republic) over the past 50 years
title_fullStr Reconstruction and analysis of erythemal UV radiation time series from Hradec Králové (Czech Republic) over the past 50 years
title_full_unstemmed Reconstruction and analysis of erythemal UV radiation time series from Hradec Králové (Czech Republic) over the past 50 years
title_sort reconstruction and analysis of erythemal uv radiation time series from hradec králové (czech republic) over the past 50 years
publisher Copernicus Publications
publishDate 2018
url https://doi.org/10.5194/acp-18-1805-2018
https://doaj.org/article/4a372d0ed13249d28ad8f70379042ab2
geographic Arctic
geographic_facet Arctic
genre albedo
Arctic
North Atlantic
North Atlantic oscillation
genre_facet albedo
Arctic
North Atlantic
North Atlantic oscillation
op_source Atmospheric Chemistry and Physics, Vol 18, Pp 1805-1818 (2018)
op_relation https://www.atmos-chem-phys.net/18/1805/2018/acp-18-1805-2018.pdf
https://doaj.org/toc/1680-7316
https://doaj.org/toc/1680-7324
doi:10.5194/acp-18-1805-2018
1680-7316
1680-7324
https://doaj.org/article/4a372d0ed13249d28ad8f70379042ab2
op_doi https://doi.org/10.5194/acp-18-1805-2018
container_title Atmospheric Chemistry and Physics
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container_issue 3
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