Comparison of sensible heat fluxes by large aperture scintillometry and eddy covariance over two contrasting-climate vineyards

•Scintillometry was compared to eddy covariance in two contrasting climate vineyards.•Roughness length of the vineyard was strongly influenced by wind direction.•Scintillometer closely matched eddy covariance measurements of sensible heat flux.•Energy balance closure was better (79%) at the drier site compared to humid (64%).•Deployment of scintillometer close to roughness sublayer resulted in lower fluxes.