Comparison of gage vs multi-sensor (radar plus gage) precipitation estimates for midwestern United States counties

Nancy E. Westcott, H. Vernon Knapp

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An intercomparison of gage and radar-based precipitation estimates was undertaken for the Midwestern United States. Multi-sensor precipitation estimates (MPE) based on the Stage III/IV algorithm developed by the Office of Hydrology / NWS River Forecast Centers, National Weather Service quality-controlled cooperative gage (QC-Coop) data, and gage data from three high density networks in Illinois from February 2002 through August 2005 were examined. Most differences in county-averaged monthly precipitation estimated by QC-Coop and MPE in nine Midwestern states were within +/- 25%, averaging 6%. The difference between gage and MPE monthly values decreased somewhat through the 41-month period of study. Data from three regional gage networks indicated that on a daily basis, averaged MPE and gage network data agreed to within about +/- 25%. Daily MPE values were often lower than the gage values for large precipitation amounts. When examining multiple gages within single MPE grid points, it was found that for very low daily precipitation amounts, MPE grid amounts were generally greater than gage, and for high daily precipitation amounts, MPE amounts were lower than gage amounts.

Original languageEnglish (US)
Title of host publicationRestoring Our Natural Habitat - Proceedings of the 2007 World Environmental and Water Resources Congress
StatePublished - Dec 1 2007
Event2007 World Environmental and Water Resources Congress: Restoring Our Natural Habitat - Tampa, FL, United States
Duration: May 15 2007May 19 2007

Publication series

NameRestoring Our Natural Habitat - Proceedings of the 2007 World Environmental and Water Resources Congress

Other

Other2007 World Environmental and Water Resources Congress: Restoring Our Natural Habitat
CountryUnited States
CityTampa, FL
Period5/15/075/19/07

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

Fingerprint Dive into the research topics of 'Comparison of gage vs multi-sensor (radar plus gage) precipitation estimates for midwestern United States counties'. Together they form a unique fingerprint.

  • Cite this

    Westcott, N. E., & Vernon Knapp, H. (2007). Comparison of gage vs multi-sensor (radar plus gage) precipitation estimates for midwestern United States counties. In Restoring Our Natural Habitat - Proceedings of the 2007 World Environmental and Water Resources Congress (Restoring Our Natural Habitat - Proceedings of the 2007 World Environmental and Water Resources Congress).