EVALUATION OF FOOTPRINT MODELS FOR ANALYSIS OF FLOWS OBTAINED BY EDDY-COVARIANCE IN SMALL-AREAS
Ciência E Natura
EVALUATION OF FOOTPRINT MODELS FOR ANALYSIS OF FLOWS OBTAINED BY EDDY-COVARIANCE IN SMALL-AREAS
Autor Correspondente: Ivan Mauricio Cely Toro | [email protected]
Palavras-chave: footprint; eddy-covariance; flow measurements
Resumos Cadastrados
Resumo Inglês:
Two footprint calculation models of surface flow measurements are compared. The calculations are based on the analytical footprint models of Kormann and Meixner (2001) [An analytical footprint model for non-neutral stratification. Boundary-Layer Meteorology 99, 207-224] and Schuepp et al. (1990) [Footprint prediction of scalar flows from analytical solutions of the diffussion equation. Boundary-Layer Meteorology 50, 355-373]. The density functions of the footprint of a flow sensor are determined using the data obtained by the eddy-covariance method. These functions are integrated above areas given as quadrangular polygons, such as agricultural fields. In this work we observe the characteristics of each footprint model making use of flow measurements with an eddy-covariance system of the SULFLUX network, installed in an area of agricultural culture. Finally, it is discussed which model more accurately describes flow measurements in small areas.
