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Last modified
7/28/2009 2:40:55 PM
Creation date
4/24/2008 2:56:12 PM
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Weather Modification
Title
Snow Accumulation Algorithm for the WSR-80D Radar: Final Report
Date
7/1/1998
Weather Modification - Doc Type
Report
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<br />CONTENTS <br /> <br />Page <br /> <br />15. References <br /> <br />65 <br /> <br />Appendix A. <br /> <br />Paper Presented at the 28th Conference on Radar Meteorology <br />Held in Austin, Texas, September 7-12, 1997 ............................ <br /> <br />69 <br /> <br />Appendix B. <br /> <br />The Snow Accumulation Algorithm Web Page ... . . . . . . . . . . . . . . . . . . . . . . . . <br /> <br />73 <br /> <br />TABLES <br /> <br />Table Page <br /> <br />Summary of some S rates, in inch h-1, for noted a and Ze values (in dBZ). <br />The power law exponent in equation (3) is assumed to be 2.0 in all cases .............. 21 <br /> <br />2 Relations between the gages and radar locations and lowest useable beam <br />tilts at the five main study sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 22 <br /> <br />3 Summary of a and p values for individual gages, and groups of snow boards <br />for KENX, using a +5 dBZ minimum for conversion to S. Minimum hourly <br />accumulations were 0.005 inch for gages and 0.010 inch for snow boards. <br />Values of a and p shown by regular font are from the primary optimization <br />approach using equation (7). Bold fonts in shaded cells depict results from <br />the alternative approach ..................................................... 24 <br /> <br />4 Summary of a and p values resulting from application of the optimization <br />scheme to combined data sets within about 60 km of each radar. The minimum <br />hourly S accumulation used was 0.005 inch for all gages and 0.100 inch for snow <br />boards. Accumulation of S was set to zero for Ze values less than 5 dBZ . . . . . . . . . . . . . . .. 25 <br /> <br />5 Summary of recommended Ze-S coefficients and exponents for regions <br />represented by the listed WSR-88D radars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 <br /> <br />6 Summary of S rates, in inch h-1, for noted a and Ze values (in dBZ), and <br />exponent P set to 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 <br /> <br />7 The location of gages used on Grand Mesa, relative to the radar ..................... 45 <br /> <br />Vll <br />
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