An exploratory analysis of low-ozone events during spring and summer months over Cape Point, South Africa

David Jean Du Preez; Nelson Bègue; Hassan Bencherif; Caradee Wright

An exploratory analysis of low-ozone events during spring and summer months over Cape Point, South Africa

David Jean Du Preez ^{1, 2} Nelson Bègue ³ Hassan Bencherif ³ Caradee Wright ⁴

1 Université de Pretoria

2 SAWS - South African Weather Service

3 LACy - Laboratoire de l'Atmosphère et des Cyclones

4 Medical Research Council [South African]

Abstract : Decreased stratospheric ozone levels contribute towards increased ultraviolet (UV) radiation at the Earth's surface with potential negative impacts on public health. This study sought to determine whether or not the break-up of the polar vortex has an effect on stratospheric ozone levels and the resulting UV-B radiation at Cape Point. Using a dynamical model, it was shown that the polar vortex has a limited effect on ozone levels at Cape Point in September and that tropical air-masses had a larger impact on ozone levels during summer months. Decreased levels of stratospheric ozone resulted in increased UV radiation at the surface.

Keywords : UV radiation stratospheric-ozone clear-sky

Document type :

Conference papers

Domain :

Sciences of the Universe [physics] / Ocean, Atmosphere

Complete list of metadatas

http://hal.univ-reunion.fr/hal-02097470
Contributor : Réunion Univ <>
Submitted on : Friday, April 12, 2019 - 8:25:56 AM
Last modification on : Saturday, April 13, 2019 - 1:16:21 AM

David du Preez_SASAS2018.pdf

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An exploratory analysis of low-ozone events during spring and summer months over Cape Point, South Africa

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An exploratory analysis of low-ozone events during spring and summer months over Cape Point, South Africa

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