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<br />of 51 dBZ for all available gauge data. Open circles are associated with the PPS run in which the <br /> <br />existing method for forming pairs was used. Filled circles are assoCiated with the PPS run in <br /> <br />which the gauge-radar pairs were formed using the 3x3 center bin. In both cases the center radar <br /> <br />bin was paired with the gauge observation and plotted. <br /> <br />Fig. 12. Log-log scatter plots of storm-total gauge-radar pairs for four different rain rate <br /> <br /> <br />thresholds corresponding to 49,51,53, and 55 dBZ. Symbols are defined in Table 2. The radar <br /> <br /> <br />estimates used for each pair includes a) the center of the 3x3 bins surrounding the gauge location, <br /> <br /> <br />b) the average of the 3x3 bins, and c) the estimate that would be chosen by the existing algorithm <br /> <br />to be used in the Adjustment algorithm. The radar estimates have not been adjusted by any bias <br /> <br />estimates. <br /> <br />Fig. 13. Time series plots of hourly gauge-radar bias estimates from the Adjustment algorithm <br /> <br />for the case of maximum rain rate thresholds corresponding to a) 49 dBZ, b) 51 dBZ, and c) 53 <br /> <br />dBZ. The gauge-radar pairs used as input into the algorithm are formed using the existing <br /> <br />methodology for determining which radar estimate of the 3x3 array to choose. <br /> <br />Fig. 14. Time series plots of basin-maximum (dotted lines) and basin-averaged (solid lines) <br /> <br />values of a) reflectivity, b) rain rate, c) one-hour rainfall, and d) storm-total rainfall. Rainfall in <br />this figure has not been adjusted by any bias estimates. The dashed lines in (a) and (b) represent <br />the equivalent maximum rain rate thresholds of 51 dBZ and 74.7 mm h", respectively. The <br />dashed line in (c) represents the one-hour Flash Flood Guidance rainfall. <br />33 <br />