Comparison of evapotranspiration using the aerodynamic and Bowen ratio energy balance methods

Persistent Link:
http://hdl.handle.net/10150/278561
Title:
Comparison of evapotranspiration using the aerodynamic and Bowen ratio energy balance methods
Author:
Richardson, Jalyn Cristi, 1971-
Issue Date:
1996
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The stability-corrected aerodynamic method was used to estimate fluxes of sensible and latent heat over an irrigated winter wheat field at Maricopa Agricultural Center in southern Arizona. These estimates were compared against the more precise Bowen ratio energy balance measurements made at the same location. The data were collected for 43 consecutive days over a range of canopy conditions. The aerodynamic method performed poorly against the validated Bowen ratio method at this site. Fluxes of latent heat were underestimated by the stability-corrected aerodynamic method. Sensible heat fluxes sometimes agreed well, but were often low. A new model was developed by combining AERO sensible heat (H(aero) with net radiation and soil heat flux to estimate latent energy as a residual (Le(resid)) in the surface energy balance equation. This aerodynamic energy balance (AEB) method, produced R² values of 0.97 and 0.78 for the wet and dry periods respectively.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Hydrology.; Physics, Atmospheric Science.
Degree Name:
M.Sc.
Degree Level:
masters
Degree Program:
Graduate College; Renewable Natural Resources
Degree Grantor:
University of Arizona
Advisor:
Gay, Lloyd W.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleComparison of evapotranspiration using the aerodynamic and Bowen ratio energy balance methodsen_US
dc.creatorRichardson, Jalyn Cristi, 1971-en_US
dc.contributor.authorRichardson, Jalyn Cristi, 1971-en_US
dc.date.issued1996en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThe stability-corrected aerodynamic method was used to estimate fluxes of sensible and latent heat over an irrigated winter wheat field at Maricopa Agricultural Center in southern Arizona. These estimates were compared against the more precise Bowen ratio energy balance measurements made at the same location. The data were collected for 43 consecutive days over a range of canopy conditions. The aerodynamic method performed poorly against the validated Bowen ratio method at this site. Fluxes of latent heat were underestimated by the stability-corrected aerodynamic method. Sensible heat fluxes sometimes agreed well, but were often low. A new model was developed by combining AERO sensible heat (H(aero) with net radiation and soil heat flux to estimate latent energy as a residual (Le(resid)) in the surface energy balance equation. This aerodynamic energy balance (AEB) method, produced R² values of 0.97 and 0.78 for the wet and dry periods respectively.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectHydrology.en_US
dc.subjectPhysics, Atmospheric Science.en_US
thesis.degree.nameM.Sc.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineRenewable Natural Resourcesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorGay, Lloyd W.en_US
dc.identifier.proquest1382625en_US
dc.identifier.bibrecord.b37699544en_US
dc.identifier.bibrecord.b34357622en_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.