Improving Tornado Warnings with the Federal Aviation Administration's Terminal Doppler Weather Radar

摘要: Abstract The potential role of the Federal Aviation Administration's Terminal Doppler Weather Radar (TDWR) to supplement Surveillance Radar–1988 (WSR–88D) for tornado detection is discussed. Compared WSR–88D, TDWR has a narrower beam, lower scan angles, and faster update rates. 11 August 1999 Salt Lake City, Utah, used as an illustration utility TDWR. City was much closer than WSR–88D 750 m higher Because developed rapidly upward from surface convergence line, detected formation earlier WSR–88D. Also, vortex signatures associated with were better defined by enhanced spatial temporal coverage provided network shown. A significant improvement in detection, well other low–altitude phenomena, would be gained. However, ground clutter signal attenuation can degrade coverage....