2011•Journal of Hydraulic EngineeringRequires access

Comparison of the sensible heat flux measurements on different spatial scales in an irrigated cropland

Yü Liu

Abstract

This study examined the relationship between LAS (Large Aperture Scintillometer) and EC (Eddy Covariance technique) under different crop conditions in term of the sensible heat flux using the data collected from a typical cropland in the Weishan Irrigation District,Liaocheng city,Shandong province.The results showed that the measurements of LAS and EC are in good agreement in this cropland.But the estimated sensible heat flux by LAS is slightly higher than that by EC,which might be due to either the disagreement in their heterogeneous source areas or the underestimation of EC measurement.LAS could provide a reliable way of measuring area-average sensible heat flux

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Key concepts: Scintillometer, Sensible heat, Eddy covariance, Environmental science, Flux (metallurgy), Atmospheric sciences, Heat flux, Irrigation