SO2 seasonal variation and assessment of Ozone Monitoring Instrument (OMI) measurements at Sharpeville (27.86°E; 26.68°S) a South African ground-based station

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dc.contributor.author Sangeetha, S.K.
dc.contributor.author Sivakumar, V.
dc.contributor.author Josipovic, M.
dc.contributor.author Gebreslasie, M.
dc.contributor.author Wright, C.Y. (Caradee)
dc.date.accessioned 2017-11-10T06:21:48Z
dc.date.issued 2017-08
dc.description.abstract In this study, seasonal, inter-annual variations of sulphur dioxide (SO2) were analysed for Sharpeville, South Africa (27.86°E; 26.68°S) for the period 2007–2013. Sharpeville is a residential site located within a highly industrialized region. Inter-annual variations were investigated by analysis of data collated by a ground-based (GB) instrument as well as the SO2 retrievals recorded by the Ozone Monitoring Instrument (OMI), a satellite-based sensor. The planetary boundary layer (PBL) SO2 vertical column data recorded by OMI were converted to surface SO2 volume mixing ratios using the pressure difference between surface and PBL. Accordingly, the OMI-derived SO2 measurements overestimated GB values and showed a good correlation with GB data in the austral winter. Besides this, the overall comparisons i.e. their daily, seasonal, and yearly correlation studies found that OMI-derived measurements was in better agreement with GB regardless of its moderate relative percentage of difference with GB. The seasonal variations of SO2 demonstrated that GB and OMI-derived measurements followed a general pattern of increasing trend from autumn until late winter and decreased from the onset of spring; however, the latter showed unique high SO2 levels in summer. Together with this, the inter-annual variations of both computations displayed a small decrement in SO2 values during the period 2011–2013. This however proved to be a stable variation when compared to other countries. en_ZA
dc.description.department Geography, Geoinformatics and Meteorology en_ZA
dc.description.embargo 2018-08-10
dc.description.librarian hj2017 en_ZA
dc.description.sponsorship The first author (SKS) thanks the South African National Space Agency (SANSA) Earth observation for financially supporting to conduct this study. CYW receives funding support from the South African Medical Research Council and the National Research Foundation. en_ZA
dc.description.uri http://www.tandfonline.com/loi/tres20 en_ZA
dc.identifier.citation S.K. Sangeetha, V. Sivakumar, M. Josipovic, M. Gebreslasie & C. Y. Wright (2017) SO2 seasonal variation and assessment of Ozone Monitoring Instrument (OMI) measurements at Sharpeville (27.86°E; 26.68°S) a South African ground-based station, International Journal of Remote Sensing, 38:23, 6680-6696, DOI: 10.1080/01431161.2017.1363433. en_ZA
dc.identifier.issn 0143-1161 (print)
dc.identifier.issn 1366-5901 (online)
dc.identifier.other 10.1080/01431161.2017.1363433
dc.identifier.uri http://hdl.handle.net/2263/63085
dc.language.iso en en_ZA
dc.publisher Taylor and Francis en_ZA
dc.rights © 2017 Informa UK Limited, trading as Taylor & Francis Group. This is an electronic version of an article published in International Journal of Remote Sensing , vol. 38, no. 23, pp. 6680-6696, 2017. doi : 10.1080/01431161.2017.1363433. International Journal of Remote Sensing is available online at : http://www.tandfonline.com/loi/tres20. en_ZA
dc.subject Sulphur dioxide (SO2) en_ZA
dc.subject Ozone monitoring instrument (OMI) en_ZA
dc.subject Satellite-based sensor en_ZA
dc.subject Ground-based (GB) instrument en_ZA
dc.subject Planetary boundary layer (PBL) en_ZA
dc.subject Air pollution en_ZA
dc.subject Trace gases en_ZA
dc.subject Transport en_ZA
dc.subject Emissions en_ZA
dc.subject Satellite observations en_ZA
dc.subject Variability en_ZA
dc.subject Retrieval en_ZA
dc.title SO2 seasonal variation and assessment of Ozone Monitoring Instrument (OMI) measurements at Sharpeville (27.86°E; 26.68°S) a South African ground-based station en_ZA
dc.type Postprint Article en_ZA


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