Persistent Link:
http://hdl.handle.net/10150/191452
Title:
Evapotranspiration from a stand of saltcedars
Author:
Shakur, Abdul,1932-
Issue Date:
1964
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:
A comprehensive study to determine the application, reliability and efficiency of aerodynamic and energy budget methods in computing evapotranspiration during September and October 1962 over a stand of saltcedars at Buckeye has been done. Computed evapotranspiration is evaluated against evapotranspiration measured through water budget control and compared with that obtained by climatological methods. Conclusions: 1. Average evapotranspiration rates computed by aerodynamic, energy budget and climatological methods are respectively +20%, -3 to +8% and +5% of the measured evapotranspiration rates. 2. Mass-transfer equations which are generalized for stability and instability cannot be applied in the present situation. 3. The Thornthwaite-Holzrnan equation in adiabatic form promises good results for calculating evapotranspiration over a period of a day or so. 4. The Bowen ratio method has given the best results with KH/KV=0.53. 5. The energy budget method yields more consistent results than the aerodynamic method. Recommendations: 1. Hourly measurements of the water consumption should be made and a range of the values of 'constants B1 and δ1 in Rossby and Deacon's approaches should be examined against stratified conditions. 2. Using hourly measurements of water consumption the ratio under KH/KV different conditions of stability should be further examined. 3. Climatological methods have yielded good results and should be tried as a control.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Evaporation.; Plants -- Transpiration.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Sellers, William D.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleEvapotranspiration from a stand of saltcedarsen_US
dc.creatorShakur, Abdul,1932-en_US
dc.contributor.authorShakur, Abdul,1932-en_US
dc.date.issued1964en_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.abstractA comprehensive study to determine the application, reliability and efficiency of aerodynamic and energy budget methods in computing evapotranspiration during September and October 1962 over a stand of saltcedars at Buckeye has been done. Computed evapotranspiration is evaluated against evapotranspiration measured through water budget control and compared with that obtained by climatological methods. Conclusions: 1. Average evapotranspiration rates computed by aerodynamic, energy budget and climatological methods are respectively +20%, -3 to +8% and +5% of the measured evapotranspiration rates. 2. Mass-transfer equations which are generalized for stability and instability cannot be applied in the present situation. 3. The Thornthwaite-Holzrnan equation in adiabatic form promises good results for calculating evapotranspiration over a period of a day or so. 4. The Bowen ratio method has given the best results with KH/KV=0.53. 5. The energy budget method yields more consistent results than the aerodynamic method. Recommendations: 1. Hourly measurements of the water consumption should be made and a range of the values of 'constants B1 and δ1 in Rossby and Deacon's approaches should be examined against stratified conditions. 2. Using hourly measurements of water consumption the ratio under KH/KV different conditions of stability should be further examined. 3. Climatological methods have yielded good results and should be tried as a control.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshEvaporation.en_US
dc.subject.lcshPlants -- Transpiration.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineHydrologyen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairSellers, William D.en_US
dc.identifier.oclc213825671en_US
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