Show simple item record

dc.contributor.authorIdso, Sherwood B.
dc.contributor.authorReginato, Robert J.
dc.date.accessioned2013-08-29T21:57:12Z
dc.date.available2013-08-29T21:57:12Z
dc.date.issued1974-04-20
dc.identifier.issn0272-6106
dc.identifier.urihttp://hdl.handle.net/10150/300329
dc.descriptionFrom the Proceedings of the 1974 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona Academy of Science - April 19-20, 1974, Flagstaff, Arizonaen_US
dc.description.abstractReliable information on soil-water status is required in order to make accurate water balance studies of watersheds, to determine the survival probabilities of various types of vegetation between rainfalls in low rainfall areas, and to determine the susceptibility of the uppermost soil to wind erosion. Simple solarimeters may help to accomplish this objective. Bare soil albedo was a linear function of the water content of a very thin surface layer of soil, and albedo correlated well with water contents of thicker soil layers. In addition, albedo measurements could be used to delineate the 3 classical stages of soil drying. Albedo may also be used to differentiate between the initial potential rate phase of evaporation following an application of water, and the succeeding falling rate phase. Results of applying this technique to a field of Avondale clay loam indicate that 20% to 25% of the water applied by either irrigation or rain will be lost by stage 1 potential evaporation, independent of seasonal variations in evaporative demand. Presently the techniques developed are applicable only to bare soil surfaces.
dc.language.isoen_USen_US
dc.publisherArizona-Nevada Academy of Scienceen_US
dc.rightsCopyright ©, where appropriate, is held by the author.en_US
dc.subjectHydrology -- Arizona.en_US
dc.subjectWater resources development -- Arizona.en_US
dc.subjectHydrology -- Southwestern states.en_US
dc.subjectWater resources development -- Southwestern states.en_US
dc.subjectSoil moistureen_US
dc.subjectAlbedoen_US
dc.subjectMoisture contenten_US
dc.subjectSoil surfacesen_US
dc.subjectEvaporationen_US
dc.subjectTopsoilen_US
dc.subjectWater balanceen_US
dc.subjectWater lossen_US
dc.subjectRadiationen_US
dc.subjectSoil physical propertiesen_US
dc.subjectSoil water movementen_US
dc.subjectDryingen_US
dc.subjectAir-earth interfacesen_US
dc.subjectClay loamen_US
dc.subjectVegetation effectsen_US
dc.subjectIrrigationen_US
dc.subjectRainfallen_US
dc.subjectBare soil albedoen_US
dc.subjectSolarimetersen_US
dc.subjectSoil dryingen_US
dc.titleAssessing Soil-Water Status Via Albedo Measurementen_US
dc.typetexten_US
dc.typeProceedingsen_US
dc.contributor.departmentARS, USDA, U. S. Water Conservation Laboratory, Phoenix, Arizona 85040en_US
dc.identifier.journalHydrology and Water Resources in Arizona and the Southwesten_US
dc.description.collectioninformationThis article is part of the Hydrology and Water Resources in Arizona and the Southwest collections. Digital access to this material is made possible by the Arizona-Nevada Academy of Science and the University of Arizona Libraries. For more information about items in this collection, contact anashydrology@gmail.com.en_US
refterms.dateFOA2018-08-30T13:43:04Z
html.description.abstractReliable information on soil-water status is required in order to make accurate water balance studies of watersheds, to determine the survival probabilities of various types of vegetation between rainfalls in low rainfall areas, and to determine the susceptibility of the uppermost soil to wind erosion. Simple solarimeters may help to accomplish this objective. Bare soil albedo was a linear function of the water content of a very thin surface layer of soil, and albedo correlated well with water contents of thicker soil layers. In addition, albedo measurements could be used to delineate the 3 classical stages of soil drying. Albedo may also be used to differentiate between the initial potential rate phase of evaporation following an application of water, and the succeeding falling rate phase. Results of applying this technique to a field of Avondale clay loam indicate that 20% to 25% of the water applied by either irrigation or rain will be lost by stage 1 potential evaporation, independent of seasonal variations in evaporative demand. Presently the techniques developed are applicable only to bare soil surfaces.


Files in this item

Thumbnail
Name:
hwr_04-041-054.pdf
Size:
330.4Kb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record