Abstract
It was pointed out in Chapter 5 that mean velocity and spectrum width measured by a Doppler radar are weighted averages of point velocities. Mean velocity measurements are quite adequate to depict motion on scales larger than the resolution volume V6, and the spectrum width gives an estimate of the variance of motion on scales smaller than V6; but we cannot infer the details of the flow inside the volume. In some special instances, such as when a vortex is within the resolution volume, certain attributes of motion can be deduced from the Doppler spectra (Section 9.5.3). Nevertheless, Doppler radar offers intriguing possibilities for the measurement and study of turbulence on scales larger and smaller than the resolution volume. The purpose of this chapter is to introduce the basic concepts of turbulence and to establish a firm connection between the physical (statistical) properties of the atmosphere and Doppler-derived measurements. We present relationships between turbulence and the mean Doppler velocity and spectrum width.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
