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dc.contributor.advisorSlater, Philip N.en_US
dc.contributor.authorSmith, Mark William, 1961-
dc.creatorSmith, Mark William, 1961-en_US
dc.date.accessioned2013-03-28T10:33:15Z
dc.date.available2013-03-28T10:33:15Z
dc.date.issued1989en_US
dc.identifier.urihttp://hdl.handle.net/10150/277222
dc.description.abstractThe role of high infrared (IR) reflectance in the temperature regulation of a single species of cactus, Cereus giganteus (saguaro cactus), was investigated. Two independent methods were used to determine the effect of high near-IR reflectance on C. giganteus stem temperatures. The first method was to measure the surface temperature of two individual plants of comparable size and health, one of which was partially shaded by a canopy of loose sun-screening material. The second method involved the numerical solution on a computer of the energy balance, or heat transfer, equation for C. giganteus. High reflectance at near-IR wavelengths was found to decrease the peak surface temperature reached by C. giganteus by 3.2 to 3.3°C. This figure is valid for the fairly mild environmental conditions encountered in the Sonoran Desert at an altitude of 940 m during late September and early October.
dc.language.isoen_USen_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.subjectSaguaro -- Effect of radiation on -- Arizona.en_US
dc.subjectInfrared radiation.en_US
dc.titleEffect of infrared reflectance on stem temperatures of saguarosen_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.identifier.oclc23670989en_US
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.levelmastersen_US
dc.identifier.proquest1339231en_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineOptical Sciencesen_US
thesis.degree.nameM.S.en_US
dc.identifier.bibrecord.b17656370en_US
dc.identifier.bibrecord.b17656357en_US
refterms.dateFOA2018-07-02T08:22:26Z
html.description.abstractThe role of high infrared (IR) reflectance in the temperature regulation of a single species of cactus, Cereus giganteus (saguaro cactus), was investigated. Two independent methods were used to determine the effect of high near-IR reflectance on C. giganteus stem temperatures. The first method was to measure the surface temperature of two individual plants of comparable size and health, one of which was partially shaded by a canopy of loose sun-screening material. The second method involved the numerical solution on a computer of the energy balance, or heat transfer, equation for C. giganteus. High reflectance at near-IR wavelengths was found to decrease the peak surface temperature reached by C. giganteus by 3.2 to 3.3°C. This figure is valid for the fairly mild environmental conditions encountered in the Sonoran Desert at an altitude of 940 m during late September and early October.


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