Surface heat budget and solar radiation allocation at a melt pond during summer in the central Arctic Ocean
Surface heat budget and solar radiation allocation at a melt pond during summer in the central Arctic Ocean
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DOI：
10.1007/s11802-014-1922-0
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发表时间：
2014-01
影响因子：
1.6
通讯作者：
Shugang Zhang;Jinping Zhao;Jiuxin Shi;Yutian Jiao
中科院分区：
文献类型：
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作者：
Shugang Zhang;Jinping Zhao;Jiuxin Shi;Yutian Jiao
利用2010年中国国家北极科学考察队在北极中部采集的资料，研究了融化池表面的热量收支和融化池处的太阳辐射分配。熔池表面的温度与其上方的空气温度成正比。然而，两者之间的线性关系因空气温度高于或低于0°C而异。当气温低于0°C时，熔池表面温度受气温的影响很大。净长波辐射和湍流热通量都能引起熔池的能量损失，但后者的损失大于前者。当气温低于0°C时，湍流热通量是净长波辐射的2倍以上。进入池塘表面的辐射能量的50%以上被池塘水吸收。当气温低于0°C时，池塘表面会出现非常薄的冰盖（黑冰）;另一方面，只有一小部分（5.5%）的太阳辐射净长波被这样薄的冰盖吸收。
The heat budget of a melt pond surface and the solar radiation allocation at the melt pond are studied using the 2010 Chinese National Arctic Research Expedition data collected in the central Arctic. Temperature at a melt pond surface is proportional to the air temperature above it. However, the linear relationship between the two varies, depending on whether the air temperature is higher or lower than 0°C. The melt pond surface temperature is strongly influenced by the air temperature when the latter is lower than 0°C. Both net longwave radiation and turbulent heat flux can cause energy loss in a melt pond, but the loss by the latter is larger than that by the former. The turbulent heat flux is more than twice the net longwave radiation when the air temperature is lower than 0°C. More than 50% of the radiation energy entering the pond surface is absorbed by pond water. Very thin ice sheet on the pond surface (black ice) appears when the air temperature is lower than 0°C; on the other hand, only a small percentage (5.5%) of net longwave in the solar radiation is absorbed by such a thin ice sheet.