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Estimating sensible heat flux using surface renewal analysis and the flux variance method: A case study over olive trees at Sástago (NE of Spain)
Author(s) -
Castellvi F.,
MartínezCob A.
Publication year - 2005
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/2005wr004035
Subject(s) - sensible heat , eddy covariance , environmental science , flux (metallurgy) , atmospheric sciences , latent heat , canopy , variance (accounting) , heat flux , surface (topology) , meteorology , scintillometer , mathematics , heat transfer , mechanics , turbulence , ecosystem , geography , geology , materials science , physics , accounting , metallurgy , business , ecology , archaeology , biology , geometry , atmospheric turbulence
The eddy covariance technique for measuring surface fluxes is often not affordable outside experimental research institutes. Therefore knowledge of the performance of alternative methods for determining surface fluxes is valuable. The performance of surface renewal (SR) analysis and the flux variance (FV) method for estimating sensible heat flux has been evaluated in an experiment carried out over a heterogeneous canopy (olive orchard, 50% ground cover) at a semiarid climate in a windy area. Measurements were made at a single level close to the canopy top. SR analysis was accurate under both stable and unstable conditions. The FV method also showed a good performance under unstable conditions, but it was uncertain near neutral conditions and was not applicable under stable conditions.