Abstract
Abstract Data show that Doppler shift of storm echoes and the range extent of severe storm systems encompass a span exceeding the unambiguous resolving capability of centimetric radars. Echo coherency which is related to Doppler spectrum width and radar pulse repetition frequency (PRF) places limits on pulse-Doppler radar's unambiguous range and velocity measurements. Statistics on severe storm Doppler velocities and spectrum widths are given to evaluate limits for radars operating at different wavelengths. The maximum range to which coherent Doppler measurements can be obtained is related to shear, turbulence and radar parameters. Data suggest that either eddy dissipation is high (ϵ > 1 m2 s−3) in large (20%) portions of severe storms or that many of the measured Doppler spectrum widths arise from vortices of scales small compared to the pulse volume but outside the equilibrium range of turbulence scales. Rangescrambled echoes are most annoying because they obscure observation, whereas velocity ambiguiti...
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
