Comparison of ground-based and satellite-derived solar UV Index levels at six South African sites

dc.contributor.authorCadet, Jean-Maurice
dc.contributor.authorBencherif, Hassan
dc.contributor.authorPortafaix, Thierry
dc.contributor.authorLamy, Kevin
dc.contributor.authorNcongwane, Katlego P.
dc.contributor.authorCoetzee, Gerrie J. R.
dc.contributor.authorWright, Caradee Yael
dc.date.accessioned2018-07-12T07:33:46Z
dc.date.available2018-07-12T07:33:46Z
dc.date.issued2017-11-14
dc.description.abstractSouth Africa has been measuring the ground-based solar UV index for more than two decades at six sites to raise awareness about the impacts of the solar UV index on human health. This paper is an exploratory study based on comparison with satellite UV index measurements from the OMI/AURA experiment. Relative UV index differences between ground-based and satellite-derived data ranged from 0 to 45% depending on the site and year. Most of time, these differences appear in winter. Some ground-based stations’ data had closer agreement with satellite-derived data. While the ground-based instruments are not intended for long-term trend analysis, they provide UV index information for public awareness instead, with some weak signs suggesting such long-term trends may exist in the ground-based data. The annual cycle, altitude, and latitude effects clearly appear in the UV index data measured in South Africa. This variability must be taken into account for the development of an excess solar UV exposure prevention strategy.en_ZA
dc.description.departmentGeography, Geoinformatics and Meteorologyen_ZA
dc.description.librarianam2018en_ZA
dc.description.sponsorshipThe National Research Foundation and South African Medical Research Council provided support to Caradee Y.Wright. The SAFE-UV/PROTEA Project and the CNRS-NRF GDRI ARSAIO, for sponsoring Hassan Bencherif and Jean Maurice Cadet. The Région Réunion, for Jean-Maurice Cadet. GIOVANNI online data system (developed and maintained by the NASA GES DISC) are thanked for the provision of ground-based and satellite-derived solar UVR data, respectively.en_ZA
dc.description.urihttp://www.mdpi.com/journal/ijerphen_ZA
dc.identifier.citationCadet, J.M., Bencherif, H., Portafaix, T. et al. 2017, 'Comparison of ground-based and satellite-derived solar UV Index levels at six South African sites', International Journal of Environmental Research and Public Health, vol. 14, no. 11, pp. 1-15.en_ZA
dc.identifier.issn1660-4601 (online)
dc.identifier.other10.3390/ijerph14111384
dc.identifier.urihttp://hdl.handle.net/2263/65360
dc.language.isoenen_ZA
dc.publisherMDPI Publishingen_ZA
dc.rights© 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.en_ZA
dc.subjectSolar ultraviolet radiationen_ZA
dc.subjectUV Indexen_ZA
dc.subjectGround-based measurementsen_ZA
dc.subjectSatellite-derived dataen_ZA
dc.subjectOMI/AURAen_ZA
dc.subjectSouth Africa (SA)en_ZA
dc.subjectUltraviolet (UV)en_ZA
dc.subjectUltraviolet index (UVI)en_ZA
dc.titleComparison of ground-based and satellite-derived solar UV Index levels at six South African sitesen_ZA
dc.typeArticleen_ZA

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