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Journal Articles Hydrological Processes Year : 2007

Preliminary spectral characterization of snow in a high altitude tropical glacier and potential effects of impurities in snow on albedo of tropical glaciers

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Abstract

This paper presents some preliminary measurements of snow spectral reflectance on the tropical Bolivian Zongo glacier. Measurements show a correct agreement with theoretical spectral albedo of pure snow in the near infrared region, but lower values in the visible region (by 10-20%) probably due to aerosols contained in snow. Impurity contents ranged from 10 to 100 ppmw in one-week-old snow collected from the Zongo glacier, but measurements are scarce. Large amounts of snowfall partly compensate the proximity of dust sources in mid-latitude glaciers, whereas on outer-tropical glaciers precipitations are not abundant and are very seasonal, and sources of aerosols are proximate.

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insu-00377271 , version 1 (21-04-2009)

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Jean Emmanuel Sicart, Yves Arnaud. Preliminary spectral characterization of snow in a high altitude tropical glacier and potential effects of impurities in snow on albedo of tropical glaciers. Hydrological Processes, 2007, 21 (26), pp.3642 à 3644. ⟨10.1002/hyp.6741⟩. ⟨insu-00377271⟩
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