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<br />I <br />o <br /> <br /> <br />2000 <br /> <br />NCAR C-band <br />Doppler rodar <br /> <br />-- '-0 <br />--- <br /> <br />-----...------ <br /> <br />--- <br /> <br />2000 <br /> <br />Kilometer. <br /> <br />I <br />10 <br /> <br />Figure 3: Regions where dual-Doppler data may be collected with the NCAR <br />C-band and WPL Ka-band radars using quasi-horizontal volume <br />scans. The two areas within the heavy solid lines are where <br />horizontal winds with an accuracy of approximately :t2 m s-l <br />can be measured at heights above 5 km MSL. The minimum height <br />observable decreases from 5 km to 4 km and 3 km MSL as indi- <br />cated by the curved dashed lines inside the heavy solid <br />lines. The assumption made is that the lowest working eleva- <br />tion angle for the Ka-band radar is 15 degrees and for the C- <br />band radar is 6 degrees. Thus in regions around the Ka-band <br />radar site where the terrain is lower than 15 degrees horizon- <br />tal winds can be measured at lower heights than indicated <br />here. Terrain height contours are in meters MSL. This Figure <br />was provided by Mr. James Wilson of NCAR. <br /> <br />26 <br /> <br />.- <br /> <br />-- <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />,----e <br /> <br />. <br /> <br />- <br /> <br />. <br /> <br />. <br /> <br />. <br />