GENERAL ENQUIRIES: Tel: + 27 12 841 2911 | Email: callcentre@csir.co.za

Show simple item record

dc.contributor.author Padayachi, YR
dc.contributor.author Thambiran, Tirusha
dc.contributor.author Naidoo, M
dc.contributor.author Garland, Rebecca M
dc.contributor.author Phala, N
dc.date.accessioned 2015-08-19T11:15:21Z
dc.date.available 2015-08-19T11:15:21Z
dc.date.issued 2014-10
dc.identifier.citation Padayachi, Y.R., Thambiran, T., Naidoo, M., Garland, R.M. and Phala, N. 2014. An investigation of high ozone episodes in the City of Johannesburg. National Association for Clean Air (NACA) Annual Conference Proceedings, Umhlanga, Durban, 8-10 October 2014, 4 pp en_US
dc.identifier.isbn 978-0-620-63065-8
dc.identifier.uri http://hdl.handle.net/10204/8103
dc.description National Association for Clean Air (NACA) Annual Conference Proceedings, Umhlanga, Durban, 8-10 October 2014 en_US
dc.description.abstract A study of ozone monitoring data in Johannesburg highlighted that the city is frequently affected by high ozone episodes. There is limited knowledge about the chemical and meteorological drivers of these high ozone episodes in Johannesburg. In this paper, a case study of the Delta Park air quality monitoring station is used to describe the process used to identify ozone episodes and the drivers thereof in the city. In 2005 alone, it was found that there were 483 exceedances of the 8-hourly South African National Ambient Air Quality Standard for ozone at Delta Park. The bulk of these episodes occurred in the summer (DJF) and spring (SON) months. Examples of the pollution events during these seasons occurring on 3 February 2005 and 16 September 2005, as well as an event on 31 July 2005 occurring during winter (JJA) are presented. Concentrations of ozone precursor gases at the station were not high for days prior to and on the day of the three ozone episodes. It was unlikely that local sources of pollution contributed to the high ozone concentrations measured at Delta Park station. To determine the origin of the air masses which were transported over Delta Park for the 3 episodes, the Hybrid Single Particle Lagrangian Integrated Trajectory Model (HYSPLIT) model was used. The results of the case study are used to make recommendations for air quality improvements in the city. en_US
dc.language.iso en en_US
dc.publisher National Association for Clean Air en_US
dc.relation.ispartofseries Workflow;14431
dc.subject Ozone en_US
dc.subject Hybrid Single Particle Lagrangian Integrated Trajectory en_US
dc.subject HYSPLIT en_US
dc.subject Pollution episodes en_US
dc.subject Meteorological condition en_US
dc.subject Trajectory models en_US
dc.title An investigation of high ozone episodes in the City of Johannesburg en_US
dc.type Presentation en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search ResearchSpace


Advanced Search

Browse

My Account