Affiliation:
1. Research Application Program, National Center for Atmospheric Research, Boulder, Colorado
Abstract
Abstract
The spatial statistics of a simulated turbulent velocity field are estimated using radial velocity estimates from simulated coherent Doppler lidar data. The structure functions from the radial velocity estimates are processed to estimate the energy dissipation rate ε and the integral length scale Li, assuming a theoretical model for isotropic wind fields. The performance of the estimates are described by their bias, standard deviation, and percentiles. The estimates of ε2/3 are generally unbiased and robust. The distribution of the estimates of Li are highly skewed; however, the median of the distribution is generally unbiased. The effects of the spatial averaging by the atmospheric movement transverse to the lidar beam during the dwell time of each radial velocity estimate are determined, as well as the error scaling as a function of the dimensions of the total measurement region. Accurate estimates of Li require very large measurement domains in order to observe a large number of independent samples of the spatial scales that define Li.
Publisher
American Meteorological Society
Subject
Atmospheric Science,Ocean Engineering
Reference31 articles.
1. Estimation of the turbulence energy dissipation rate from pulsed Doppler lidar data.;Banakh;Atmos. Oceanic Opt.,1997
2. Discrete Hilbert transform.;Cizek;IEEE Trans. Audio Electroacoust.,1970
3. Doppler Radar and Weather Observations.;Doviak,1993
4. Doppler lidar measurements of profiles of turbulence and momentum flux.;Eberhard;J. Atmos. Oceanic Technol.,1989
5. Simulation of coherent Doppler lidar performance in the weak signal regime.;Frehlich;J. Atmos. Oceanic Technol.,1996
Cited by
94 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献