Gas flux measurement using the eddy accumulation method with conditional sampling
Gas flux measurement using the eddy accumulation method with conditional sampling
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使用涡流累积法和条件采样的气体通量测量
DOI：
10.2525/ecb1963.33.79
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Satoru Suzuki
中科院分区：
文献类型：
--
作者：
Tomoyasu Ishida;T. Nagano;Y. Kitaya;Satoru Suzuki
将涡流积累理论与条件气体采样法应用于自然条件下实际气体通量的测量。在此基础上研制了一种新的气体采样系统，并对该方法的可靠性进行了验证。利用感热通量和平均上升气温与平均下降气温之差计算理论系数b。系数b几乎是恒定值0.53。涡积法测得的感热通量与波温比法测得的感热通量基本一致。涡旋累积法和浓度梯度法计算的CO2通量具有较好的一致性。这些结果表明，有条件气体采样的涡流积聚法具有令人满意的可靠性。
We applied the eddy accumulation theory with conditional gas sampling method for practicable gas flux measurement in natural condition. A new gas sampling system based on this theory was developed and the reliability of this method was checked. The coefficient b of the theory was calculated by using the sensible heat flux and the difference of averaged upward air temperature and downward one. The coefficient b has an almost constant value of 0.53. Sensible heat flux measured by the eddy accumulation showed a close agreement with that by the Bowen-ratio method. Also, CO2 flux by the eddy accumulation method and the concentration gradient method showed a good agreement. These results suggest the satisfactory reliability of the eddy accumulation method with conditional gas sampling.