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://doaj.org/article/7036b28d4f0d4d90a0ac97d0eb842bd1 |
id |
ftdoajarticles:oai:doaj.org/article:7036b28d4f0d4d90a0ac97d0eb842bd1 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:7036b28d4f0d4d90a0ac97d0eb842bd1 2023-05-15T13:34:26+02:00 Spring and summer time ozone and solar ultraviolet radiation variations over Cape Point, South Africa D. J. du Preez J. V. Ajtić H. Bencherif N. Bègue J.-M. Cadet C. Y. Wright 2019-03-01T00:00:00Z https://doi.org/10.5194/angeo-37-129-2019 https://doaj.org/article/7036b28d4f0d4d90a0ac97d0eb842bd1 EN eng Copernicus Publications https://www.ann-geophys.net/37/129/2019/angeo-37-129-2019.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-37-129-2019 0992-7689 1432-0576 https://doaj.org/article/7036b28d4f0d4d90a0ac97d0eb842bd1 Annales Geophysicae, Vol 37, Pp 129-141 (2019) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2019 ftdoajarticles https://doi.org/10.5194/angeo-37-129-2019 2022-12-31T15:25:52Z 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 R 2 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 Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Annales Geophysicae 37 2 129 141 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 D. J. du Preez J. V. Ajtić H. Bencherif N. Bègue J.-M. Cadet C. Y. Wright Spring and summer time ozone and solar ultraviolet radiation variations over Cape Point, South Africa |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
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 R 2 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 |
D. J. du Preez J. V. Ajtić H. Bencherif N. Bègue J.-M. Cadet C. Y. Wright |
author_facet |
D. J. du Preez J. V. Ajtić H. Bencherif N. Bègue J.-M. Cadet C. Y. Wright |
author_sort |
D. J. du Preez |
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://doaj.org/article/7036b28d4f0d4d90a0ac97d0eb842bd1 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Annales Geophysicae, Vol 37, Pp 129-141 (2019) |
op_relation |
https://www.ann-geophys.net/37/129/2019/angeo-37-129-2019.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-37-129-2019 0992-7689 1432-0576 https://doaj.org/article/7036b28d4f0d4d90a0ac97d0eb842bd1 |
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_ |
1766052646132645888 |