Disturbance of light-absorbing aerosols on the albedo in a winter snowpack of Central Tibet.
Disturbance of light-absorbing aerosols on the albedo in a winter snowpack of Central Tibet.
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DOI：
10.1016/s1001-0742(12)60220-4
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发表时间：
2013-08
影响因子：
6.9
通讯作者：
J. Ming;Pengling Wang;Shuyu Zhao;Pengfei Chen
中科院分区：
文献类型：
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作者：
J. Ming;Pengling Wang;Shuyu Zhao;Pengfei Chen
2011年冬季，在纳木错地区对西藏中部积雪的反照率进行了野外观测。在野外测量了雪粒大小和密度等雪的性质，并采集了表层雪样(最小到5厘米)。黑碳和粉尘的平均浓度为72ppbm(接近山上冰川的浓度)。年青唐古拉)和120ppmm。研究发现，积雪的反照率和吸光气溶胶(LAAS)的反照率以及颗粒尺寸的增长之间存在着相反的趋势。模拟结果表明，冬季积雪中黑碳、沙尘和颗粒的生长可以使宽带反照率分别降低11%、28%和61%。
A field observation on the albedo of the snowpack in Central Tibet was conducted in the Nam Co region in the winter of 2011. Snow properties, including grain size and density, were measured in the field, and surface-layer snow samples (down to 5 cm) were collected. The average concentrations of black carbon and dust were 72 ppbm (close to that in the glaciers of Mt. Nyainqentanglha) and 120 ppmm, respectively. Inverse trends were found to exist between the albedo of the snowpack and light-absorbing aerosols (LAAs) as well as grain size growth. Modeling showed that black carbon, dust, and grain growth in the winter snowpack can reduce the broadband albedo by 11%, 28%, and 61%, respectively.