Gas transfer experiment on Georges Bank using two volatile deliberate tracers
Gas transfer experiment on Georges Bank using two volatile deliberate tracers
复制标题
使用两种挥发性故意示踪剂在乔治银行进行气体转移实验
DOI：
10.1029/93jc01844
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发表时间：
1993
影响因子：
--
通讯作者：
R. Sambrotto
中科院分区：
文献类型：
--
作者：
R. Wanninkhof;W. Asher;R. Weppernig;Hua Chen;P. Schlosser;C. Langdon;R. Sambrotto
在Georges Bank上进行了气体交换实验，使用了有意的示踪剂六氟化硫（SF6）和氦3（3 He）。在10天的时间内测量了水柱中示踪剂的浓度。在此期间，斑块从8公里长的注射条纹增长到约500平方公里的面积。气体转移速度由示踪剂比率随时间的变化确定，并按其施密特数比率缩放。基于覆盖风速范围从3到11 m/s的四个实验点，观察到气体交换与风速之间的近线性关系。结果落在上部的范围内的气体传输风速的关系发展到今天。在实验过程中，从船上的风速计，在一个自由浮动的漂流，并在一个固定的系泊表现出显着的差异。由于能够在几天的时间尺度上测量海洋上的气体传输速度，因此必须进行准确的风速/应力测量，以获得气体传输和风速之间的稳健关系。
A gas exchange experiment was performed on Georges Bank using deliberate tracers sulfur hexafluoride (SF6) and helium 3 (3He). The concentrations of the tracers were measured in the water column over a period of 10 days. During this time the patch grew from an 8-km-long injection streak to an area of about 500 km2. The gas transfer velocity was determined from the change in the ratio of the tracers over time scaled to the ratio of their Schmidt numbers. A near-linear relationship between gas exchange and wind speed was observed based on four experimental points covering a wind speed range from 3 to 11 m/s. The results fall in the upper part of the range of gas transfer-wind speed relationships developed to date. Wind speeds during the experiment obtained from anemometers on the ship, on a free floating drifter, and on a fixed mooring showed significant differences. With the ability to measure gas transfer velocities over the ocean on timescales of several days, accurate wind speed/stress measurements are imperative to obtain a robust relationship between gas transfer and wind speed.