Doughnut Talk Roster 2025

The scheduled Doughnut Talks are held in the Oceanography Dept Seminar Room every alternate Wednesday at 1pm. All are welcomed.

Student NameDegreeTitleSupervisorDate of Talk
Amelia DearyPhDEarly phytoplankton community development in the Southern Ocean Marginal Ice ZoneSarah Fawcett09-Apr-25
Nomvula MpongosePhDExtreme heat characteristics in the East coastal regions of the Southern HemisphereChris Reason 09-Apr-25
Lynette van SchalkwykPostdocWeather stations, balloons and drylines: A weather campaign in the Kalahari during peak SummerRoss Blamey, Chris Reason23-Apr-25
Matthew CarrPhDInvestigating Indian Ocean upwelling through modelling experimentsChris Reason 23-Apr-25
Humeshni PillayPhDHyperspectral retrieval algorithms for optically complex waterbodies in the Western CapeNatasha Karenyi, Marie Smith, Lisl Lain07-May-25
Amber SneddonMScAtmospheric river climatology for the South Atlantic basin using image processing-based methodologiesRoss Blamey, Chris Reason07-May-25
Christiaan van NiekerkPhDTracing sources of atmospheric nitrogen using stable isotopeKatye Altieri21-May-25
Philile MvulaPhDPostponedJuliet Hermes21-May-25
Keagan PetersenMScLagrangian biogeochemical modelling in the Southern BenguelaMarcello Vichi21-May-25
Wanjiru ThoithiPhDUnderstanding the impacts of multi-year La Niña
events on rainfall over southeastern Asia		Chris Reason 04-Jun-25
Amanda MasilelaMScA Langrangian analysis of moisture transport over the Berg-Olifants and Breede-Gouritz catchmentsMoagabo Ragoasha, Sarah Roffe, Ramontsheng Rapolaki04-Jun-25
Lillina RuitersMScSeasonal variability of phytoplankton photophysiology in the Southern OceanMarcello Vichi04-Jun-25
Clea WelchMScA deep dive into marine heatwaves: Insights from the Southwest Indian OceanJuliet Hermes, Janet Sprintall, Tammy Morris, Neil Malan18-Jun-25
Emma FahraeusPhDFine scale structures in the Southwest Indian Ocean: High resolution physics and acoustics couplingSarah Fawcett18-Jun-25
Nikita QosholoMScSubmesoscale fronts in the surface boundary layer of the Cape BasinMoagabo Ragoasha02-Jul-25
Tshikana RasehlomiPhDOceanic ladders: Vertical migration as a driver of Cape anchovy and sardine population connectivityMarjolaine Krug, Babatunde Abiodun02-Jul-25
Joshua MirkinPhDAn investigation of subsurface oxygen variability in the eastern South AtlanticSarah Fawcett02-Jul-25
Mishka RawatlalPhDAerosols in the marine atmosphereKatye Altieri16-Jul-25
Nomkwezane KoboPhDExploring the drivers of extreme rainfall events in Southern African using MPASBabatunde Abiodun16-Jul-25
Nokuthula NkadimengMScEddy variability in the southeast Atlantic Ocean: A comparative study of the northern and southern Benguela eddy fieldsIsabelle Ansorge, Issufo Halo, Tarron Lamont30-Jul-25
Wayne de JagerPostdocA swath-based framework to disentangle the dynamic and thermodynamic contributions to sub-daily sea-ice concentration variabilityMarcello Vichi30-Jul-25
Sheveenah TaukoorPostdoc Detection of large Agulhas Current meander eventsIsabelle Ansorge, Babatunde Abiodun, Annette Samuelsen13-Aug-25
Anele MahlanguMScUncertainties associated with biogeochemical model complexity in the Southern OceanMoagabo Ragoasha, Thulwaneng Mashifane13-Aug-25
Pelonomi SakweMSc Characterisation of aerosol composition, phase state and acidity in non-industrialised regions of South AfricaKatye Altieri27-Aug-25
Magata MangatanePhDRepresentation of Antarctic young ice processes in ocean-sea ice modelsMarcello Vichi 27-Aug-25
Dayna Collins MScThe temporal and spatial variability of Antarctic sea ice using ice core recordsMarcello Vichi 27-Aug-25
Tallulah GrazianiMSc Linking basin-scale climate modes to warming and marine heatwave variability in the Equatorial Western Indian OceanJuliet Hermes, Moagabo Ragoasha, Mike Roberts, Steven Herbette17-Sep-25
Olivia DawsonMScInvestigating fine-scale nutrient supply in the Cape Basin using glider observationsSarah Fawcett 17-Sep-25
Shaza QalelaMScTracing Antropogenic Nitrogen in Bouvet Island ice cores: Insights from stable isotope analysis of nitrateKatye Altieri, Sarah Fawcett01-Oct-25
Lebogang MakgatiPhDImprovements in Tropical Cyclone Forecasting using CCAM compared with the operational Unified Model: A case study of tropical cyclone IdaiChris Reason01-Oct-25
Mulalo MaphugwiPhDA climatology of Mesoscale Convective Systems over southern AfricaRoss Blamey, Chris Reason15-Oct-25
Sifiso MpapaneMScUnderstanding the effects of photoacclimation on the Chl:C ratio of Southern Ocean phytoplankton: Modelling considerations and insights into seasonal assemblage compositionMarcello Vichi29-Oct-25
Calvin SwartPhDNitrogen supply and cycling in the subtropical ocean: Implications for ocean fertility and atmospheric carbon dioxideSarah Fawcett12-Nov-25
Sarah du PreezMScTarron Lamont, Jenny Huggett, Isabelle Ansorge 12-Nov-25
Zaine PerryMScUsing WRF-CROCO to understand the atmospheric-oceanic conditions driving the track, intensity and impacts of long-tracked Tropical CyclonesMoagabo Ragoasha,  Ramontsheng Rapolaki, Sarah Roffe12-Nov-25
Sadiyah RawatPhDThe island mass effect shapes the top-down and bottom-up controls on productivity and export in the Indian Southern OceanSarah Fawcett, Raquel Flynn26-Nov-25
Sina WallschussPhDNitrous oxide in the Benguela Upwelling SystemSarah Fawcett26-Nov-25
Christo WhittlePhDDevelopment of regionally optimized MODIS Earth Observation Algorithms to characterize upwelling and HAB variability in the southern BCLMEIsabelle Ansorge 26-Nov-25
Zara PrewPhDChanges in the African Seaforest over the past half- centurySarah Fawcett, AJ Smit, Tommy Bornman26-Nov-25