Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
A mesoscale investigation of the sea breeze in the Stellenbosch winegrowing district
Dissertation (MSc)--University of Pretoria, 2007.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Published: |
University of Pretoria
2013
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613723271626752 |
|---|---|
| access_status_str | Open Access |
| author2 | Dyson, Liesl L. |
| author_browse | Dyson, Liesl L. |
| author_facet | Dyson, Liesl L. |
| collection | Thesis |
| dc_rights_str_mv | © 2007, 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 | Dissertation (MSc)--University of Pretoria, 2007. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/27693 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:40:40.528Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| 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:2263/27693 A mesoscale investigation of the sea breeze in the Stellenbosch winegrowing district Dyson, Liesl L. dpreezc@arc.agric.za Du Preez, Chrisna Barbara South Africa Wine growing area Relative humidity Synoptic conditions Wind speed Sea breeze Atmospheric modelling system Temperature UCTD Dissertation (MSc)--University of Pretoria, 2007. This study investigates how well the Regional Atmospheric Modelling System (RAMS) simulates the sea breeze from False Bay (False Bay sea breeze) at a small resolution of 200m. It describes the influence of the sea breeze in the Stellenbosch wine growing district focusing on temperature, relative humidity and wind speed and direction through three case studies, using three different synoptic conditions. The RAMS simulations are verified against measurements done by automatic weather stations in the study area for all three case studies. The first synoptic condition investigated is when light onshore flow occurred over the south-western Cape. The RAMS model simulated the vertical and horizontal structure of the sea breeze from False Bay very well. However RAMS predicted the onset of the sea breeze 3 hours earlier than the AWS data predicted. The flow was off-shore in the second case study. The RAMS simulations as well as the observed data from the automatic weather stations, showed the two sea breezes influencing the study area, one from Table Bay, west of Stellenbosch, and one from False Bay. In this case study the model simulated the flatter head and stronger False Bay sea breeze. The third case study investigated the influence of strong onshore synoptic conditions, in which the model and observed values showed that no sea breeze developed from False Bay. From the three case studies it was found that the sea breeze is influenced by the synoptic flow and that the sea breeze causes cooling of between 3°C and 16°C and relative humidity (RH) increase of between 16 – 57% depending on the synoptic flow. RAMS was able to simulate the sea breeze theoretically correct and has the potential to be used to identify climatological areas in the wine growing areas of the Western Cape. Geography, Geoinformatics and Meteorology Unrestricted 2013-09-07T12:05:14Z 2007-04-30 2013-09-07T12:05:14Z 2007-04-24 2007-04-30 2007-02-09 Dissertation Du Preez, C 2007, A mesoscale investigation of the sea breeze in the Stellenbosch winegrowing district, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/27693 > http://hdl.handle.net/2263/27693 http://upetd.up.ac.za/thesis/available/etd-02092007-093317/ © 2007, 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 | South Africa Wine growing area Relative humidity Synoptic conditions Wind speed Sea breeze Atmospheric modelling system Temperature UCTD A mesoscale investigation of the sea breeze in the Stellenbosch winegrowing district |
| title | A mesoscale investigation of the sea breeze in the Stellenbosch winegrowing district |
| title_full | A mesoscale investigation of the sea breeze in the Stellenbosch winegrowing district |
| title_fullStr | A mesoscale investigation of the sea breeze in the Stellenbosch winegrowing district |
| title_full_unstemmed | A mesoscale investigation of the sea breeze in the Stellenbosch winegrowing district |
| title_short | A mesoscale investigation of the sea breeze in the Stellenbosch winegrowing district |
| title_sort | mesoscale investigation of the sea breeze in the stellenbosch winegrowing district |
| topic | South Africa Wine growing area Relative humidity Synoptic conditions Wind speed Sea breeze Atmospheric modelling system Temperature UCTD |
| url | http://hdl.handle.net/2263/27693 http://upetd.up.ac.za/thesis/available/etd-02092007-093317/ |