Errors in Radio Acoustic Sounding of Temperature
Errors in Radio Acoustic Sounding of Temperature
复制标题
无线电声测温误差
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
W. Ecklund
中科院分区：
文献类型：
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作者：
W. Angevine;W. Ecklund
由于采用了径向风的同时改正，无线电声学探测系统的温度测量精度得到了很大的提高。温度精度现在可能会受到许多因素的影响，这些因素在以前的工作中被认为是可以忽略的。本文介绍了两种类型的错误，那些由于大气的影响和那些由于近似的温度反演方程。在一组对流边界层RASS和无线电探空数据的错误进行了检查。在大气影响类别中，计算了两个误差。第一种是由信号强度梯度引起的距离误差引起的。该范围误差是新提出的，约为0.05°−0.1°C。第二个是由于风和湍流造成的误差，约为0.1°C。常用的近似值的因素，在检索方程的贡献误差零点几摄氏度。在这两种校正方法应用于......之后仍然存在显著差异。
Abstract With the use of simultaneous correction for radial wind, the accuracy of radio acoustic sounding systems for the measurement of temperature has been substantially improved. The temperature accuracy can now be affected by a number of factors that have been considered negligible in previous work. This paper describes two types of errors, those due to atmospheric effects and those due to approximations in the temperature retrieval equation. The errors are examined in a set of convective boundary layer RASS and radiosonde data. In the category of atmospheric effects, two errors are computed. The first is caused by a range error due to the gradient of signal strength. This range error is newly proposed and is approximately 0.05°−0.1°C. The second is an error due to wind and turbulence of about 0.1°C. Commonly used approximations for factors in the retrieval equation contribute errors of a few tenths of a degree Celsius. A significant difference remains after these two corrections have been applied to ...