Editorial Type:
Article
Article Type:
Research Article

Spatially Variable Advection Correction of Radar Data. Part II: Test Results

Alan Shapiro School of Meteorology, and Center for Analysis and Prediction of Storms, University of Oklahoma, Norman, Oklahoma

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Katherine M. Willingham Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, and NOAA/OAR/National Severe Storms Laboratory, Norman, Oklahoma

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Corey K. Potvin School of Meteorology, and Center for Analysis and Prediction of Storms, and Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, Norman, Oklahoma

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Print Publication:
01 Nov 2010
DOI:
https://doi.org/10.1175/2010JAS3466.1
Page(s):
3457–3470
Restricted access

Abstract

The spatially variable advection-correction/analysis procedure introduced in Part I is tested using analytical reflectivity blobs embedded in a solid-body vortex, and Terminal Doppler Weather Radar (TDWR) and Weather Surveillance Radar-1988 Doppler (WSR-88D) data of a tornadic supercell thunderstorm that passed over central Oklahoma on 8 May 2003. In the TDWR tests, plan position indicator (PPI) data at two volume scan times are input to the advection-correction procedure, with PPI data from a third scan time, intermediate between the two input times, that is used to validate the results. The procedure yields analyzed reflectivity fields with lower root-mean-square errors and higher correlation coefficients than those reflectivity fields that were advection corrected with any constant advection speed.

Corresponding author address: Alan Shapiro, School of Meteorology, University of Oklahoma, 120 David L. Boren Blvd., Room 5900, Norman, OK 73072. Email: ashapiro@ou.edu

Abstract

The spatially variable advection-correction/analysis procedure introduced in Part I is tested using analytical reflectivity blobs embedded in a solid-body vortex, and Terminal Doppler Weather Radar (TDWR) and Weather Surveillance Radar-1988 Doppler (WSR-88D) data of a tornadic supercell thunderstorm that passed over central Oklahoma on 8 May 2003. In the TDWR tests, plan position indicator (PPI) data at two volume scan times are input to the advection-correction procedure, with PPI data from a third scan time, intermediate between the two input times, that is used to validate the results. The procedure yields analyzed reflectivity fields with lower root-mean-square errors and higher correlation coefficients than those reflectivity fields that were advection corrected with any constant advection speed.

Corresponding author address: Alan Shapiro, School of Meteorology, University of Oklahoma, 120 David L. Boren Blvd., Room 5900, Norman, OK 73072. Email: ashapiro@ou.edu

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