Spring and summer time ozone and solar ultraviolet radiation variations over Cape Point, South Africa
The correlation between solar ultraviolet radiation (UV) and atmospheric ozone is well understood. Decreased stratospheric ozone levels which led to increased solar UV radiation levels at the surface have been recorded. These increased levels of solar UV radiation have potential negative impacts on...
Published in: | Annales Geophysicae |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2019
|
Subjects: | |
Online Access: | https://doi.org/10.5194/angeo-37-129-2019 https://noa.gwlb.de/receive/cop_mods_00002994 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002952/angeo-37-129-2019.pdf https://angeo.copernicus.org/articles/37/129/2019/angeo-37-129-2019.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00002994 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00002994 2023-05-15T13:49:21+02:00 Spring and summer time ozone and solar ultraviolet radiation variations over Cape Point, South Africa du Preez, David J. Ajtić, Jelena V. Bencherif, Hassan Bègue, Nelson Cadet, Jean-Maurice Wright, Caradee Y. 2019-03 electronic https://doi.org/10.5194/angeo-37-129-2019 https://noa.gwlb.de/receive/cop_mods_00002994 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002952/angeo-37-129-2019.pdf https://angeo.copernicus.org/articles/37/129/2019/angeo-37-129-2019.pdf eng eng Copernicus Publications Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-37-129-2019 https://noa.gwlb.de/receive/cop_mods_00002994 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002952/angeo-37-129-2019.pdf https://angeo.copernicus.org/articles/37/129/2019/angeo-37-129-2019.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2019 ftnonlinearchiv https://doi.org/10.5194/angeo-37-129-2019 2022-02-08T23:00:47Z The correlation between solar ultraviolet radiation (UV) and atmospheric ozone is well understood. Decreased stratospheric ozone levels which led to increased solar UV radiation levels at the surface have been recorded. These increased levels of solar UV radiation have potential negative impacts on public health. This study was done to determine whether the break-up of the Antarctic ozone hole has an impact on stratospheric columnar ozone (SCO) and resulting ambient solar UV-B radiation levels at Cape Point, South Africa, over 2007–2016. We investigated the correlations between UV index, calculated from ground-based solar UV-B radiation measurements and satellite-retrieved column ozone data. The strongest anti-correlation on clear-sky days was found at solar zenith angle 25∘ with exponential fit R2 values of 0.45 and 0.53 for total ozone column and SCO, respectively. An average radiation amplification factor of 0.59 across all SZAs was calculated for clear-sky days. The MIMOSA-CHIM model showed that the polar vortex had a limited effect on ozone levels. Tropical air masses more frequently affect the study site, and this requires further investigation. Article in Journal/Newspaper Antarc* Antarctic Niedersächsisches Online-Archiv NOA Antarctic The Antarctic Annales Geophysicae 37 2 129 141 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung du Preez, David J. Ajtić, Jelena V. Bencherif, Hassan Bègue, Nelson Cadet, Jean-Maurice Wright, Caradee Y. Spring and summer time ozone and solar ultraviolet radiation variations over Cape Point, South Africa |
topic_facet |
article Verlagsveröffentlichung |
description |
The correlation between solar ultraviolet radiation (UV) and atmospheric ozone is well understood. Decreased stratospheric ozone levels which led to increased solar UV radiation levels at the surface have been recorded. These increased levels of solar UV radiation have potential negative impacts on public health. This study was done to determine whether the break-up of the Antarctic ozone hole has an impact on stratospheric columnar ozone (SCO) and resulting ambient solar UV-B radiation levels at Cape Point, South Africa, over 2007–2016. We investigated the correlations between UV index, calculated from ground-based solar UV-B radiation measurements and satellite-retrieved column ozone data. The strongest anti-correlation on clear-sky days was found at solar zenith angle 25∘ with exponential fit R2 values of 0.45 and 0.53 for total ozone column and SCO, respectively. An average radiation amplification factor of 0.59 across all SZAs was calculated for clear-sky days. The MIMOSA-CHIM model showed that the polar vortex had a limited effect on ozone levels. Tropical air masses more frequently affect the study site, and this requires further investigation. |
format |
Article in Journal/Newspaper |
author |
du Preez, David J. Ajtić, Jelena V. Bencherif, Hassan Bègue, Nelson Cadet, Jean-Maurice Wright, Caradee Y. |
author_facet |
du Preez, David J. Ajtić, Jelena V. Bencherif, Hassan Bègue, Nelson Cadet, Jean-Maurice Wright, Caradee Y. |
author_sort |
du Preez, David J. |
title |
Spring and summer time ozone and solar ultraviolet radiation variations over Cape Point, South Africa |
title_short |
Spring and summer time ozone and solar ultraviolet radiation variations over Cape Point, South Africa |
title_full |
Spring and summer time ozone and solar ultraviolet radiation variations over Cape Point, South Africa |
title_fullStr |
Spring and summer time ozone and solar ultraviolet radiation variations over Cape Point, South Africa |
title_full_unstemmed |
Spring and summer time ozone and solar ultraviolet radiation variations over Cape Point, South Africa |
title_sort |
spring and summer time ozone and solar ultraviolet radiation variations over cape point, south africa |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/angeo-37-129-2019 https://noa.gwlb.de/receive/cop_mods_00002994 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002952/angeo-37-129-2019.pdf https://angeo.copernicus.org/articles/37/129/2019/angeo-37-129-2019.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-37-129-2019 https://noa.gwlb.de/receive/cop_mods_00002994 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002952/angeo-37-129-2019.pdf https://angeo.copernicus.org/articles/37/129/2019/angeo-37-129-2019.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/angeo-37-129-2019 |
container_title |
Annales Geophysicae |
container_volume |
37 |
container_issue |
2 |
container_start_page |
129 |
op_container_end_page |
141 |
_version_ |
1766251205918457856 |