On the relation between sea‐surface heat flow and thermal circulation in the ocean
On the relation between sea‐surface heat flow and thermal circulation in the ocean
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DOI：
10.3402/tellusa.v34i2.10801
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发表时间：
1982-04
期刊：
影响因子：
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通讯作者：
G. Walin
中科院分区：
文献类型：
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作者：
G. Walin
提出了一个描述海洋热态和环流的理论框架。根据系统的基本力学特性，即轻水向较重的水扩散的趋势，推导并讨论了差热、扩散热流和表面漂移之间的关系。我们发现，在低温和中温条件下，可以通过对海洋表面热通量的了解直接确定向极地的表面漂移。初步的定量估计表明，整个海洋的“哈德利环流”涉及70±30 Sverdrup数量级的体积通量。对于北大西洋，我们发现了一个10斯维德鲁普级的向极地漂移，这与以前对向南深流的估计相当。海洋中扩散通量的平均值在15°C时为20 W m -2数量级，在25°C时为60 W m -2数量级。DOI: 10.1111 / j.2153-3490.1982.tb01806.x
A theoretical framework for the description of the thermal state and circulation in the ocean is presented. Relations between differential heating, diffusive heat flux and surface drift are derived and discussed in the light of the basic mechanical property of the system, i.e. the tendency for light water to spread on top of heavier water. We find that for low and medium temperatures, the poleward surface drift can be determined directly from a knowledge of the heat flux through the sea surface. Preliminary quantitative estimates indicate that the “Hadley circulation” for the entire ocean involves a volume flux of order 70 ± 30 Sverdrup. For the North Atlantic we find a poleward drift of order 10 Sverdrup which compares well with previous estimates of the southward deep flow. Mean values for the diffusive flux in the ocean are found to be of order 20 W m -2 at 15 °C and 60 W m -2 at 25 °C. DOI: 10.1111/j.2153-3490.1982.tb01806.x