ICAR Research Data Repository for Knowledge Management
Derivation of the aerodynamic roughness parameters for a Sahelian savannah site using the eddy correlation technique
OAR@ICRISAT
View Archive Info| Field | Value | |
| Relation |
http://oar.icrisat.org/3056/
http://dx.doi.org/10.1007/BF02033827 |
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| Title |
Derivation of the aerodynamic roughness parameters for a Sahelian savannah site using the eddy correlation technique
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| Creator |
Lloyd, C R
Gash, J H C Sivakumar, M V K |
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| Subject |
Climate change
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| Description |
Vertical exchange of heat, moisture and momentum above the earth's surface depends strongly on the turbulence generated by surface roughness. This roughness is best specified through the roughness length and the zero plane displacement. The ratio of windspeed to friction velocity was measured at four heights using the eddy correlation technique at a fallow savannah site in the Sahel. The change in this ratio with height was used to derive the zero plane displacement and the roughness length of the surface, together with an estimate of the error in each parameter. These were estimated as 0.93 ± 0.35 m and 0.17 ± 0.01 m, respectively. The method appears to be a more robust alternative to wind profile derivation.
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| Publisher |
Kluwer
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| Date |
1992
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Language |
en
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| Rights |
—
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| Identifier |
http://oar.icrisat.org/3056/1/JA_1223.pdf
Lloyd, C R and Gash, J H C and Sivakumar, M V K (1992) Derivation of the aerodynamic roughness parameters for a Sahelian savannah site using the eddy correlation technique. Boundary-Layer Meteorology, 58 (3). pp. 261-271. ISSN 1573-1472 |
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