2011
DOI: 10.1002/hyp.8343
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Discharge dependence of stream albedo in a steep proglacial channel

Abstract: Stream surface albedo was measured at a location downstream of Place Glacier, Canada, in a steep bouldery channel. Portions of the water surface were visibly aerated as a result of the cascading flow even at lower discharges; at high flows, the stream was near-continuous whitewater. Albedo generally increased with discharge, from around 0.1 at the lower flows to 0.4 at the highest flows. This increase is consistent with the known effect of aeration on the reflectance of water. This discharge dependence of albe… Show more

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Cited by 12 publications
(22 citation statements)
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“…The relation between albedo and discharge at Rutherford Creek was weak, in contrast to the strong relation reported by Richards and Moore (). This weak response can perhaps be attributed in part to the height of the pyranometers above the stream surface during measurements as well as the range of flow conditions experienced at Rutherford Creek during the field season.…”
Section: Discussioncontrasting
confidence: 89%
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“…The relation between albedo and discharge at Rutherford Creek was weak, in contrast to the strong relation reported by Richards and Moore (). This weak response can perhaps be attributed in part to the height of the pyranometers above the stream surface during measurements as well as the range of flow conditions experienced at Rutherford Creek during the field season.…”
Section: Discussioncontrasting
confidence: 89%
“…At Rutherford Creek, albedo measurements were taken at the three Reflectance increases in visible wavelengths as the thickness of foam increases (Whitlock et al, 1982), suggesting that increasingly thick layers of foam should increase albedo after the entirety of the pyranometer's field of view is covered by white water. Despite white water covering almost all of the pyranometer's field of view during white water measurements at Rutherford Creek, the highest albedo value measured was 0.32, which is below the maximum value of 0.4 measured by Richards and Moore (2011) and 0.5 measured by Whitlock et al (1982), suggesting that albedo could continue to increase with aeration at higher discharges at the hydraulic jump on Rutherford Creek.…”
Section: Effects Of Discharge and Aerationmentioning
confidence: 73%
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“…Outgoing shortwave radiation ( K↑ ) was calculated assuming a standard albedo of 0.05 for water (e.g., Leach & Moore, ; Magnusson, Jonas, & Kirchner, ; Oke, , p. 12). Although the albedo of a steeper, more turbulent mountain stream has been shown to be higher (Richards & Moore, ), the reach of Helen Creek under study has a much lower gradient and displays minimal aeration even at high discharges.…”
Section: Methodsmentioning
confidence: 99%