Record Details
A study of the variation of the surface roughness lengths at Risø, Denmark
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | A study of the variation of the surface roughness lengths at Risø, Denmark |
| Names |
Hennessey, Joseph Paul Jr
(creator) Peterson, Ernest W. (advisor) |
| Date Issued | 1974-07-24 (iso8601) |
| Note | Graduation date: 1975 |
| Abstract | The Risø data were analyzed for variations in the surface roughness lengths. The method of analysis was tested on the Wangara data and proved satisfactory at this homogeneous site. Annual mean surface roughness lengths were determined for three wind speed categories and three stability categories. The decrease in surface roughness length with increasing wind speed and decreasing stability was large but not generally statistically significant because of the large dispersion in the data. The annual mean roughness length varied over several orders of magnitude. These results and also the ten year mean profiles were compared with those of previous investigators. It was found that the standard deviation determined from mean annual profiles over a ten year period was greater than one order of magnitude. |
| Genre | Thesis/Dissertation |
| Topic | Winds -- Measurement |
| Identifier | http://hdl.handle.net/1957/29301 |
