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David J. Bodine and Kristen L. Rasmussen

and β = 0.0088 to correct . WSR-88D calibration was also checked by examining the mean throughout the period of study in dry snow regions identified by the PID algorithm. The mean value of 0.20 dB compares well with the expected value for dry snow aggregates of less than 0.25 dB ( Ryzhkov et al. 2005 ). After data processing steps are completed, the processed radar data are interpolated onto a three-dimensional grid through the following process. Radar data are linearly interpolated on

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Manda B. Chasteen, Steven E. Koch, and David B. Parsons

humidity, weak near-surface stability, low-level turbulent mixing, and enhanced surface winds. This moisture plume was evident in the ASOS observations at 0900 and 1200 UTC as the northward protrusion of high dewpoint temperatures and dense low-level cloud cover located over central Texas ( Figs. 12a,b ). Moreover, enhanced surface winds were observed within the moisture plume, but the observed wind speeds were 5 kt slower than the simulated 10-m wind speeds over much of the region (not shown). This

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Samuel K. Degelia, Xuguang Wang, and David J. Stensrud

the FP sites. After 2100 UTC, the inner domain is initialized within the outer domain and conventional, PECAN, and level-2 Weather Surveillance Radar-1988 Doppler (WSR-88D) observations are assimilated at 10-min cycling intervals from 2110 UTC 25 June to 0000 UTC 26 June. Because the WSR-88D network sufficiently covers the domain of interest, we choose not to assimilate any special radar data collected by PECAN instruments. The radar observations assimilated in this study (radar reflectivity

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Rachel L. Miller, Conrad L. Ziegler, and Michael I. Biggerstaff

front ( Fig. 1 ). The deployment strategy positioned the radars in six contiguous triangular subarrays ( Fig. 1b , Table 1 ) that provided overlapping sampling volumes and covered baselines to affect optimal multiple-Doppler analysis ( Ray et al. 1978 ; Ray et al. 1979 ; Ray et al. 1980 ; Ray and Sangren 1983 ; Ziegler et al. 1983 ; Ziegler et al. 1991 ; Kessinger et al. 1987 ; Ziegler 2013b ). Table 1. Characteristics of the radar array from which multi-Doppler radar analyses were

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