HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Gold, A. Articles by Asher, J. B. Search for Related Content PubMed Articles by Gold, A. Articles by Asher, J. B. Agricola Articles by Gold, A. Articles by Asher, J. B.

Soil Reflectance Measurement Using a Photographic Method¹

ABSTRACT

The albedo of two soils, Avondale clay loam and Yuma sand dunes, was determined using a panchromatic film in a hand-held 35-mm camera. Samples with different volumetric moisture content, from air dry to saturation, were compared to calibrated reference surfaces of evenly distributed tones of gray. For the limited spectral sensitivity of the detector (panchromatic film), a correction factor K' was derived graphically from known spectral reflectance of a different soil. The albedo is given by the product of the correction factor and the fraction of the reflected radiation that contributes to the detector signal. The results obtained by the photographic method were in good agreement with results obtained by conventional radiometric methods for Yuma sand dunes, but larger differences were found between radiometry and photography for Avondale clay loam.

¹ Contribution from the Optical Science Center and the Water Resources Research Center, The Univ. of Arizona, Tucson, AZ 85721.

² On sabbatical leave from Israel Ministry of Defense, P.O. Box 7063, Tel Aviv, Israel to Optical Sciences Center; on leave from Ben Gurion University of the Negev, P.O. Box 1025, Beer Sheva, Israel to the Water Resources Research Center, The University of Arizona, respectively.

Received for publication July 25, 1975. Accepted for publication February 5, 1976.

This article has been cited by other articles:

				G. Y. Qiu, J. Ben-Asher, T. Yano, and K. Momii Estimation of Soil Evaporation Using the Differential Temperature Method Soil Sci. Soc. Am. J., November 1, 1999; 63(6): 1608 - 1614. [Abstract] [Full Text] [PDF]