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Numerical Modelling Of Severe Thunderstorms Over The South African Highveld With The Aid Of The Clark Cloud Model
Thesis (MSc (Meteorology))--University of Pretoria, 1997.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2022
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| _version_ | 1867613607144980480 |
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| access_status_str | Open Access |
| author2 | Van Heerden, Johan |
| author_browse | Van Heerden, Johan |
| author_facet | Van Heerden, Johan |
| collection | Thesis |
| dc_rights_str_mv | © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Thesis (MSc (Meteorology))--University of Pretoria, 1997. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/85488 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:38:50.049Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/85488 Numerical Modelling Of Severe Thunderstorms Over The South African Highveld With The Aid Of The Clark Cloud Model Van Heerden, Johan Terblanche, D.E. Bruyere, Cindy Lynnette UCTD Clark model mesoscale initialization large scale data ice parameterization surface heating topograpical effects precipitation research numerical simulation severe storms Thesis (MSc (Meteorology))--University of Pretoria, 1997. Precipitation research, with a view to rainfall augmentation, especially in a drought-stricken country like South Africa, is an attractive option as a source of good quality water. Numerical models can be useful tools in these programmes to help investigate the dynamical and microphysical processes in clouds. They can also be of great benefit to better understand the outcome of cloud seeding and to assist in the formation of a seeding hypothesis. This dissertation serves as a first step in establishing if the Clark model could predict mesoscale conditions in South Africa accurately enough, in order to be used as a tool in the precipitation research programme. The Clark model was used to simulate the mesoscale conditions of two selected days over the Bethlehem area. On both case days severe storms were responsible for extensive hail damage over the area. It was assumed that if the model could accurately predict severe conditions, it would also be able to predict general mesoscale conditions (this assumption was proved in the dissertation). The model also highlighted the fact that a single initializing sounding would not always be sufficient to accurately simulate severe convective activity. The model was also used to study the effect that surface heating and topography have on the development of convective activity. Civil Engineering MSc (Meteorology) Unrestricted 2022-05-17T11:21:51Z 2022-05-17T11:21:51Z 21/7/2021 1997 Thesis * https://repository.up.ac.za/handle/2263/85488 en © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Clark model mesoscale initialization large scale data ice parameterization surface heating topograpical effects precipitation research numerical simulation severe storms Numerical Modelling Of Severe Thunderstorms Over The South African Highveld With The Aid Of The Clark Cloud Model |
| title | Numerical Modelling Of Severe Thunderstorms Over The South African Highveld With The Aid Of The Clark Cloud Model |
| title_full | Numerical Modelling Of Severe Thunderstorms Over The South African Highveld With The Aid Of The Clark Cloud Model |
| title_fullStr | Numerical Modelling Of Severe Thunderstorms Over The South African Highveld With The Aid Of The Clark Cloud Model |
| title_full_unstemmed | Numerical Modelling Of Severe Thunderstorms Over The South African Highveld With The Aid Of The Clark Cloud Model |
| title_short | Numerical Modelling Of Severe Thunderstorms Over The South African Highveld With The Aid Of The Clark Cloud Model |
| title_sort | numerical modelling of severe thunderstorms over the south african highveld with the aid of the clark cloud model |
| topic | UCTD Clark model mesoscale initialization large scale data ice parameterization surface heating topograpical effects precipitation research numerical simulation severe storms |
| url | https://repository.up.ac.za/handle/2263/85488 |