| METADATA |
|
| Data set name |
Extreme wind maps for the WASA domain, South
Africa |
| Data set date |
April 2014 |
| Data provider |
SANEDI, SAWS |
| Contact persons |
Thembakazi Mali or Andre Otto |
| Contact details |
ThembakaziM@sanedi.org.za or andreo@sanedi.org.za |
| Data type |
Raster data sets with a grid cell size of
0.05? |
| Data format |
ArcGIS ENVI |
| File name(s) |
10 minute map : GIS 10 min final
with
legend.mpk Gust map : GIS gust final with legend.mpk |
| Data origin |
Model data output and estimations from
measurements for NC, WC and EC |
| DATA PARAMETERS |
|
| 1:50 yr 10 min wind speed |
1:50yr 10 min wind speed [ms1] @ 10 m above
ground level (standard conditions) |
| 1:50 yr gust speed |
1:50yr 2-3s gust speed [ms1] @ 10 m above
ground level (standard conditions) |
| COORDINATE SYSTEM |
|
| Projection |
1994 Hartbeeshoek |
| Zone number |
n/a |
| DETAILED NOTES |
| Purpose This data set was created for the WASA project and the Department of Energy, South Africa. The extreme wind maps were developed for use for input to site-specific assessments of the 1:50 year extreme winds by use of e.g. WEng software, as well as input to the South African Wind Loading Code. Methodology Reference is made to the information and documentation available from www.wasa.csir.co.za. Limitations The accuracy is limited by the inherent uncertainties of estimations of extreme winds estimated for extended periods of time, whether through the application of statistical methods to measured data, or the methodologies applied in the modelling. However, for conservativeness the values make provision for perceived uncertainties to a large degree. In WASA Phase 2 improvements is still possible to the WASA Phase 1 maps. The data set was designed specifically for planning purposes and should be used with utmost care for design, development and detailed assessments of actual wind farms. The Extreme Wind Maps for South Africa is a product of the Wind Atlas for South Africa project and is described further on the WASA download pages. Details of the scientific considerations and methods applied are available from the developers (contact details above), and has been published through a range of peer-reviewed papers. Acknowledgements WASA project for provision of modelled data and SAWS for wind measurement data. Extreme Wind Atlas team at SAWS and DTU Wind Energy. |
| DISCLAIMER |
| In no event will SANEDI and the WASA Implementation team or any person acting on behalf of SANEDI be liable for any damage, including any lost profits, lost savings, or other incidental or consequential damages arising out of the use or inability to use the information and data provided in this data set, even if SANEDI has been advised of the possibility of such damage, or for any claim by any other party. The principles, rules, exclusions and limitations provided in the Disclaimer on the WASA download site apply to the data set described here as well, even though this data set may not be distributed via the web site. By using this data set, you agree that the exclusions and limitations of liability set out in this disclaimer are rea-sonable. If you do not think they are reasonable, you must not use this data set. |
