Response properties of atmospheric turbulence measurement instruments using Russian research aircraft
Response properties of atmospheric turbulence measurement instruments using Russian research aircraft
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DOI：
10.1002/hyp.5751
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发表时间：
2004-11
影响因子：
3.2
通讯作者：
M. Strunin;T. Hiyama
中科院分区：
文献类型：
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作者：
M. Strunin;T. Hiyama
测量大气湍流以估计热量、水蒸气和二氧化碳湍流通量的仪器在实验室和俄罗斯研究Ilyushin-18飞机上的飞行条件下进行了测试。飞机湍流传感器的响应特性首先进行了测试，以减少湍流热传递和通量（包括水蒸汽通量）的测量误差，然后安装在用于俄日联合大气边界层研究的Ilyushin-18飞机上。结果表明，在0.01 ~ 10 Hz频率范围内测量的大气湍流通量能得到较好的估算。还分析了从飞机上测量湍流的误差。与飞机机身和螺旋桨有关的空气动力畸变是通过飞行试验确定的。估算了垂直风速波动与飞机温度计测量的空气温度波动之间的时滞，以及垂直风速波动与紫外线湿度计（开路系统）和红外线湿度计（闭路系统）测量的空气湿度波动之间的时滞。垂直风速和空气温度传感器的测量结果显示没有时间滞后，但垂直风速和紫外湿度计测量之间的时间滞后为0.6 s。垂直风速和红外线湿度计测量值之间的时间差取决于抽气载荷造成的飞行条件，必须为每个采样段确定。考虑到时间滞后对水蒸气通量的测量至关重要，有助于消除大的系统误差。版权所有© 2004年约翰威利父子有限公司。
Instruments that measure atmospheric turbulence for the estimation of turbulent fluxes of heat, water vapor, and carbon dioxide were tested in the laboratory and during in‐flight conditions aboard a Russian research Ilyushin‐18 aircraft. The response characteristics of the aircraft turbulence sensors were first tested to decrease measurement errors for turbulent heat transfer and fluxes, including water vapour flux, before being installed on the Ilyushin‐18 aircraft that was used in joint Russian–Japanese atmospheric boundary‐layer research. The results show that the atmospheric turbulence measured in a frequency range of 0·01 to 10 Hz yielded proper estimates of fluxes. Errors in measurements of the turbulence made from the aircraft were also analysed. Aerodynamic distortions linked to the aircraft's body and propellers were determined from flight test experiments. Time lags between vertical wind speed fluctuations and air temperature fluctuations measured by the aircraft thermometer, and those between vertical wind speed fluctuations and air humidity fluctuations measured by an ultraviolet hygrometer (open‐path system) and an infrared hygrometer (closed‐path system) were estimated. The vertical wind speed and air temperature sensor measurements showed no time lag, but a time lag of 0·6 s occurred between vertical wind speed and ultraviolet hygrometer measurements. The time lag between vertical wind speed and the infrared hygrometer measurements depended on flight conditions due to air pumping load, and had to be defined for each sampling leg. Accounting for the time lag was critical for water vapour flux measurements and helped to eliminate large systematic errors. Copyright © 2004 John Wiley & Sons, Ltd.