Partitioning of solar radiation in Arctic sea ice during melt season
Partitioning of solar radiation in Arctic sea ice during melt season
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融化季节北极海冰中太阳辐射的分配
DOI：
10.1016/j.oceano.2018.03.002
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发表时间：
2018-10
期刊：
影响因子：
2.9
通讯作者：
Li Zhijun
中科院分区：
文献类型：
--
作者：
Lu Peng;Cheng Bin;Leppäranta Matti;Li Zhijun
利用一个包含三层融化池水、下伏海冰和冰下海洋的辐射传输模式，研究了北极海冰融化季节太阳辐射的分配。光谱太阳辐照度的波长分布随着冰层深度的增加而明显变窄，从池塘表面的350-900 nm缩小到下面海洋的400-600 nm。相比之下，净光谱辐照度相当均匀。吸收的太阳能对池塘深度(Hp)和下伏冰层厚度(Hi)都很敏感。熔池吸收的太阳能(Ψp)只与THP成正比。然而，由于池塘和冰对能量吸收的抵消作用，下伏冰吸收的太阳能(ΨI)更为复杂。9月份，Ψp值比8月份下降了10%，这是由于9月份入射太阳辐射的短波带(<；530m nm)的成分比8月份更多。海冰的吸收系数只增加了冰中吸收的能量，而冰散射系数的增加只增加了融化池塘中吸收的能量，尽管Ψ和Ψ的变化比反照率和透过率的变化要小。能量吸收率随深度的变化强烈地依赖于入射光强和冰的散射，而对池塘深度的影响很小。我们的结果与以前的现场测量和数值模拟结果是相当的。我们得出的结论是，入射的太阳能主要被融化的池塘吸收，而不是被下面的海冰吸收。
The partitioning of solar radiation in the Arctic sea ice during the melt season is investigated using a radiative transfer model containing three layers of melt pond, underlying sea ice, and ocean beneath ice. The wavelength distribution of the spectral solar irradiance clearly narrowed with increasing depth into ice, from 350–900 nm at the pond surface to 400–600 nm in the ocean beneath. In contrast, the net spectral irradiance is quite uniform. The absorbed solar energy is sensitive to both pond depth (Hp) and the underlying ice thickness (Hi). The solar energy absorbed by the melt pond (Ψp) is proportional only toHp. However, the solar energy absorbed by the underlying ice (Ψi) is more complicated due to the counteracting effects arising from the pond and ice to the energy absorption. In September,Ψpdecreased by 10% from its August value, which is attributed to more components in the shortwave band (<530 nm) of the incident solar radiation in September relative to August. The absorption coefficient of the sea ice only enhances the absorbed energy in ice, while an increase in the ice scattering coefficient only enhances the absorbed energy in the melt pond, although the resulted changes inΨpandΨiare smaller than that in the albedo and transmittance. The energy absorption rate with depth depends strongly on the incident irradiance and ice scattering, but only weakly on pond depth. Our results are comparable to previous field measurements and numerical simulations. We conclude that the incident solar energy was largely absorbed by the melt pond rather than by the underlying sea ice.
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DOI：
10.5065/d6hh6h1p
发表时间：
2004
期刊：
Synthesis and Sintering
影响因子：
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作者：
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DOI：
--
发表时间：
2014
期刊：
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影响因子：
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作者：
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通讯作者：
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影响因子：
2.9
作者：
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通讯作者：
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