Assessment of spectral UV radiation at Marambio Base, Antarctic Peninsula
This study aims to assess the dependence of spectral UV radiation on different atmospheric and terrestrial factors, including solar zenith angle, ozone, and cloud cover, in the southern polar environment. For this purpose, 23 260 spectra (300–363 nm), obtained by the B199 Mk-III Brewer spectrophotom...
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ftdoajarticles:oai:doaj.org/article:bd63213c69d44194979db406d29a28cd 2023-06-11T04:06:54+02:00 Assessment of spectral UV radiation at Marambio Base, Antarctic Peninsula K. Čížková K. Láska L. Metelka M. Staněk 2023-04-01T00:00:00Z https://doi.org/10.5194/acp-23-4617-2023 https://doaj.org/article/bd63213c69d44194979db406d29a28cd EN eng Copernicus Publications https://acp.copernicus.org/articles/23/4617/2023/acp-23-4617-2023.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-23-4617-2023 1680-7316 1680-7324 https://doaj.org/article/bd63213c69d44194979db406d29a28cd Atmospheric Chemistry and Physics, Vol 23, Pp 4617-4636 (2023) Physics QC1-999 Chemistry QD1-999 article 2023 ftdoajarticles https://doi.org/10.5194/acp-23-4617-2023 2023-04-23T00:35:04Z This study aims to assess the dependence of spectral UV radiation on different atmospheric and terrestrial factors, including solar zenith angle, ozone, and cloud cover, in the southern polar environment. For this purpose, 23 260 spectra (300–363 nm), obtained by the B199 Mk-III Brewer spectrophotometer at Marambio Base, Antarctic Peninsula region, over the period 2010–2020, were studied. A neural network model was developed to investigate the effects of the explanatory variables at 127 wavelengths in the interval 300–363 nm, with a 0.5 nm sampling interval. Solar zenith angle (SZA) proved to be the most important parameter, followed by cloud cover, total ozone column (TOC), and surface albedo. The relative SZA effect is greatest at the shortest wavelengths, where a 1 ∘ decrease in SZA results in a 6 %–18 % increase in UV irradiance (305 nm). TOC particularly affects the short wavelengths below approximately 320–325 nm, when for example at 305 nm a 10 DU decrease in TOC causes a 7 %–13 % increase in UV irradiance. The large-scale ozone holes (e.g., in 2011–2012, 2014–2015, 2018–2019) caused the spectral UV irradiance at very short wavelengths to peak in spring, whereas in other seasons (e.g., 2010–2011, 2012–2013), the maxima at all wavelengths were recorded in summer (November to January). Absorption of UV radiance by the ozone also affected the temporal distribution of very high spectral UV irradiances (i.e., highest 10 % of the distribution), when at 305 nm they were observed both in spring and summer months, and at 340 nm they occurred mostly in summer. The effect of cloud cover was strongest near the fully cloudy sky and in the summer months, when the Antarctic clouds tend to be thickest. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Marambio ENVELOPE(-56.750,-56.750,-64.283,-64.283) The Antarctic Atmospheric Chemistry and Physics 23 8 4617 4636 |
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Open Polar |
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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 Assessment of spectral UV radiation at Marambio Base, Antarctic Peninsula |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
This study aims to assess the dependence of spectral UV radiation on different atmospheric and terrestrial factors, including solar zenith angle, ozone, and cloud cover, in the southern polar environment. For this purpose, 23 260 spectra (300–363 nm), obtained by the B199 Mk-III Brewer spectrophotometer at Marambio Base, Antarctic Peninsula region, over the period 2010–2020, were studied. A neural network model was developed to investigate the effects of the explanatory variables at 127 wavelengths in the interval 300–363 nm, with a 0.5 nm sampling interval. Solar zenith angle (SZA) proved to be the most important parameter, followed by cloud cover, total ozone column (TOC), and surface albedo. The relative SZA effect is greatest at the shortest wavelengths, where a 1 ∘ decrease in SZA results in a 6 %–18 % increase in UV irradiance (305 nm). TOC particularly affects the short wavelengths below approximately 320–325 nm, when for example at 305 nm a 10 DU decrease in TOC causes a 7 %–13 % increase in UV irradiance. The large-scale ozone holes (e.g., in 2011–2012, 2014–2015, 2018–2019) caused the spectral UV irradiance at very short wavelengths to peak in spring, whereas in other seasons (e.g., 2010–2011, 2012–2013), the maxima at all wavelengths were recorded in summer (November to January). Absorption of UV radiance by the ozone also affected the temporal distribution of very high spectral UV irradiances (i.e., highest 10 % of the distribution), when at 305 nm they were observed both in spring and summer months, and at 340 nm they occurred mostly in summer. The effect of cloud cover was strongest near the fully cloudy sky and in the summer months, when the Antarctic clouds tend to be thickest. |
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 |
Assessment of spectral UV radiation at Marambio Base, Antarctic Peninsula |
title_short |
Assessment of spectral UV radiation at Marambio Base, Antarctic Peninsula |
title_full |
Assessment of spectral UV radiation at Marambio Base, Antarctic Peninsula |
title_fullStr |
Assessment of spectral UV radiation at Marambio Base, Antarctic Peninsula |
title_full_unstemmed |
Assessment of spectral UV radiation at Marambio Base, Antarctic Peninsula |
title_sort |
assessment of spectral uv radiation at marambio base, antarctic peninsula |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/acp-23-4617-2023 https://doaj.org/article/bd63213c69d44194979db406d29a28cd |
long_lat |
ENVELOPE(-56.750,-56.750,-64.283,-64.283) |
geographic |
Antarctic Antarctic Peninsula Marambio The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Marambio The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Atmospheric Chemistry and Physics, Vol 23, Pp 4617-4636 (2023) |
op_relation |
https://acp.copernicus.org/articles/23/4617/2023/acp-23-4617-2023.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-23-4617-2023 1680-7316 1680-7324 https://doaj.org/article/bd63213c69d44194979db406d29a28cd |
op_doi |
https://doi.org/10.5194/acp-23-4617-2023 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
23 |
container_issue |
8 |
container_start_page |
4617 |
op_container_end_page |
4636 |
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1768379098282852352 |