Surface Heat Budget and Solar Radiation Allocation at a Melt Pond During Summer in the Central Arctic Ocean

被引:0
|
作者
ZHANG Shugang [1 ]
ZHAO Jinping [1 ]
SHI Jiuxin [1 ]
JIAO Yutian [1 ]
机构
[1] College of Physical and Environmental Oceanography, Ocean University of China
关键词
heat budget; melt pond; solar radiation; Arctic;
D O I
暂无
中图分类号
P731.11 [温度];
学科分类号
0707 ;
摘要
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℃. The melt pond surface temperature is strongly influenced by the air temperature when the latter is lower than 0℃. 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℃. 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℃; 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.
引用
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页码:45 / 50
页数:6
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