Tsholalang Rammopo awarded the prestigious 2024 SSAG Master's Bronze Medal

Posted on October 28, 2024

Tsholalang Rammopo was awarded the prestigious 2024 SSAG Master's Bronze Medal for his MSc research entitled "The characteristics of Rossby wave packets in the South African domain". The Bronze Medal is awarded to the best geography MSc completed by research dissertation within a given year in South Africa.

In the dissertation, Tsholanang employed finite (i.e. large) amplitude wave activity diagnostics to identify and characterise Rossby wave packets in the Southern Hemisphere and the South African domain. In the field of dynamic meteorology, wave activity is defined as a measure of waviness in atmospheric disturbances, such as Rossby waves; which are atmospheric oscillations that are characterised by meridional excursions of air parcels. They organise themselves in local or regional centres of high wave activity, called wave packets. Previous studies have generated climatologies of these Rossby wave packets in the Southern Hemisphere but do not factor in large amplitude waves. In Tsholanang's dissertation the use of a finite amplitude wave activity density remedies this problem. The dissertation further characterised the Rossby wave packets in terms of energy transfer to show that the so-called downstream development process applies to wave packets.

He conducted this research under the guidance of Prof Thando Ndarana.

- Author Department of Geography, Geoinformatics and Meteorology

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