Accuracy of point rainfall estimates from an 88-D radar in the cool season: the Illinois experience

Michael A. Fortune, Kenneth Labas, Nancy E. Westcott

Research output: Contribution to conferencePaper

Abstract

The sensitivity and spatial resolution of the NEXRAD system offers the promise of accurate measurement of precipitation in real time. Since the radar provides more spatially detailed and frequent measurements, it should improve rain measurements. In this connection, a cooperative study of the National Weather Service Chicago office and Northern Illinois University, with assistance from the Illinois State Water Survey, was conducted. The objective is to compare precipitation measurements from rain gages with accumulated precipitation estimated by the Precipitation Processing Subsystem (PPS) of the WSR-88D, and to determine the conditions under which the radar and gage measurements are matched, and under which they diverge. It is shown that the comparison was poor when either the radar or the gage reported small amounts; often the radar reported zero amount when the gage reported a measurable amount. Therefore, data pairs were excluded when either gage or radar reported less than 0.1 inch per storm.

Original languageEnglish (US)
Pages614-616
Number of pages3
StatePublished - Dec 1 1995
EventProceedings of the 1995 27th Conference on Radar Meteorology - Vail, CO, USA
Duration: Oct 9 1995Oct 13 1995

Other

OtherProceedings of the 1995 27th Conference on Radar Meteorology
CityVail, CO, USA
Period10/9/9510/13/95

ASJC Scopus subject areas

  • Engineering(all)

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    Fortune, M. A., Labas, K., & Westcott, N. E. (1995). Accuracy of point rainfall estimates from an 88-D radar in the cool season: the Illinois experience. 614-616. Paper presented at Proceedings of the 1995 27th Conference on Radar Meteorology, Vail, CO, USA, .