A comparison of moments extracted from wind profiler spectra with in situ measurements

As part of the VTMX program, we will use a combination of surface-based in situ and remote sensing systems to study decaying turbulence in the boundary layer during the evening transition. A central part of this work will involve the extraction of moments from spectra obtained from PNNL's wind profiler/RASS. During the winter and spring of 2000, we are collecting spectra from the wind profiler together with turbulence information from the 125-m meteorological tower on the Hanford Site in south-central Washington. We are developing automated moment-extraction procedures based on recent pattern recognition/fuzzy logic work by Cornman et al. (1998) and on methodology of Gossard et al. (1998). In this paper, we will describe our approach and first comparisons of winds and turbulence, including dissipation rate, extracted from the profiler and measured by eddy correlation on the HMS tower.