Author(s): Qinghua Yang; Bin Cheng; Xianqiao Wang; Ruibo Lei; Zhanhai Zhang
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Keywords: No Keywords
Abstract: The surface albedo observations were carried out during the Chinese National Arctic Research Expedition (CHINARE) 2008. An ice camp was set up at 84° 37’N, 144° 45’W on a relative large multi-year ice floe for about 10 days. The ice floe was covered with a thin snow cover and adjoined with cracks and leads. The observed surface albedo during ice camp varied between 0.85 -0.75. The in situ albedo has a slightly decreasing trend during observation period, and the change of albedo was strongly linked with snowfall and snow drift events. The band spectral albedo (320-950nm) over fresh snow, frozen melt pond and new frozen leads were also measured and the results are in agreement with previous studies. The albedo was simulated with several advanced paramterizations in an ice model. The parameterized albedo schemes yield acceptable results. However, the diurnal variability was difficult to be parameterized in this study due to dynamic drift of snow.
Year: 2010