Thermometric measurements of the molecular sublayer at the air‐water interface
Thermometric measurements of the molecular sublayer at the air‐water interface
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DOI：
10.1029/2005gl024769
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发表时间：
2006-04
影响因子：
5.2
通讯作者：
B. Ward;M. Donelan
中科院分区：
文献类型：
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作者：
B. Ward;M. Donelan
在海-气相互作用咸水池(ASIST)中进行了一系列测量，研究了不同热通量和风速条件下气-水界面分子亚层的响应。用镀铂钨丝显微温度计测量了原位梯度，解决了导热亚层的温度问题。通过改变气水温差和风速来控制海-气热通量，并在一定风速范围内对3种Δ水温差进行了测量。用一个函数来拟合测量的温度分布，作为一种以一致方式提取边界层厚度的方法，由此计算了Saunders(1967)之后的λ系数。该数据集返回的平均λ系数为2.4±0.5，一般低于以前的研究，并且被发现在1至9毫秒−1的范围内与风速无关。
A series of measurements was conducted in the Air‐Sea Interaction Saltwater Tank (ASIST) to study the response of the air‐water interfacial molecular sublayer under various heat flux and wind speed conditions. In‐situ gradients were measured with a platinum‐plated tungsten wire microthermometer, which resolved the temperature of the thermally conductive sublayer. Air‐sea heat flux was controlled by changing the air‐water temperature difference (ΔTAW) and the wind speed, and measurements were made for three ΔTAW regimes over a range of wind speeds. A function was fitted to the measured temperature profiles as a way of extracting the boundary layer thickness in a consistent fashion, from which the λ coefficient after Saunders (1967) was computed. This dataset returned a mean λ coefficient of 2.4 ± 0.5, which was generally lower than previous studies, and was found to be independent of wind speed in the range of 1 to 9 ms−1.