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<br />.- <br /> <br />Experiment 4: Refinement of radiometer and Ka-band radar data <br /> <br />Lead Scientist: Robert A. Kropfli, WPL <br /> <br />. <br /> <br />Participating Scientists: Alexis B. Long, DRI <br />William R. Moninger, Jack B. Snider, WPL <br />Kenneth Sassen, UU <br /> <br />The objectives of the analysis are 1) to add range information to <br /> <br />. <br /> <br />the radiometer liquid water data set in order to gain detail as to the <br /> <br />physical location of the liquid water, and 2) to interpret the Ka-band <br /> <br />radar circular depolarization ratio (CDR). <br /> <br />. <br /> <br />The first objective will be approached through comparative analysis <br /> <br />of the radiometer data and data for the same time and volume of space <br /> <br />collected with the Ka-band radar and the Iidar. <br /> <br />The radiometer data <br /> <br />-. <br /> <br />consist of the total liquid water integrated along the instrumental <br /> <br />field of view. The Ka-band radar data consist of the equivalent radar <br /> <br />reflectivity factor Ze and the circular depolarization ratio CDR. <br /> <br />The <br /> <br />--- <br />.. <br /> <br />lidar data consist of the linear depolarization ratio o. The radar and <br /> <br />lidar data variables may suggest where along the radiometer field of <br /> <br />view liquid water is located. Calculations may then be possible of the <br /> <br />. <br /> <br />liquid water content at these locations. <br /> <br />The second objective will be approached through comparative analy- <br /> <br />sis of the Ka-band radar COR data and the Iidar depolarization ratio 0 <br /> <br />. <br /> <br />data collected for the same time and volume of space. Table 3 gives the <br /> <br />microphysical interpretation of o. Measurements of 0 along the radar <br /> <br />field <br /> <br />of <br /> <br />view <br /> <br />may <br /> <br />thus <br /> <br />allow <br /> <br />some <br /> <br />microphysical <br /> <br />. <br /> <br />interpretation of CDR. <br /> <br />T he work toward these objectives is exploratory. <br /> <br />Ultimately, <br /> <br />however, it may be a first step in a program of research aimed at effec- <br /> <br />.. <br /> <br />tive joint use of the data from these three diverse instruments. <br /> <br />. <br /> <br />30 <br />