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- W2074966518 abstract "Broadband surface albedo measurements, made during the summer melt season at three weather stations on John Evans Glacier (79°40'N, 74°00'W), varied strongly with the solar zenith angle (θ 2 ) Tests were carried out to assess the impact of diurnal variations in surface albedo on seasonal net shortwave radiation (K * ) totals. Removing the diurnal signal from albedo measurements by daily averaging of hourly measurements, or by applying midday measurements to all hours of the day, changed K * by up to 16%. Ignoring measurements made at θ z > 75°, to account for measurement (cosine) error at high θ z , decreased K * by between 5 and 18%. Given the sensitivity of K * to diurnal patterns in surface albedo, experiments were carried out with two albedo models. One model accounted for albedo variations with θ z and one did not. The model driven by θ z , when implemented within a surface energy balance model for John Evans Glacier, produced better melt estimates. This suggests that diurnal variations in surface albedo should be accounted for in energy balance models of glacier melt." @default.
- W2074966518 created "2016-06-24" @default.
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- W2074966518 date "1999-12-01" @default.
- W2074966518 modified "2023-09-29" @default.
- W2074966518 title "Approaches to Modelling the Surface Albedo of a High Arctic Glacier" @default.
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- W2074966518 doi "https://doi.org/10.1111/1468-0459.00077" @default.
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