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<br />in some combination, DRA, INW, and TUS soundings would need to substitute for the CVR <br />soundings in order to estimate CLW during the 10-winter data set period. <br /> <br />Given on figures 2 through 5 are scatterplots for CVR versus INW information for each of <br />temperature, relative humidity, and wind direction and speed. In each plot, corresponding <br />values from the 1987 winter data set for 8 levels (850 mb to 500 mb) are superimposed. Figures <br />6 through 9 express relationships for only the 750-mb level. The latter level is located 300 to <br />500 m above the rim crest in a layer where much ofthe liquid water important to cloud seeding <br />is contained. <br /> <br /> 20 <br /> 10 II <br /> II <br />........ <br />U 15 II <br />II 0 <br />....... <br />C1l <br />... <br />:J <br />- <br />0 -10 <br />... <br />C1l <br />a. <br />E <br />C1l -20 <br />- <br />0:: <br />> a <br />U <br /> -30 .. 110 <br /> <br />., <br /> <br /> <br />-40 <br />-40 <br /> <br />-30 -20 -10 0 10 <br />INW temperature (lie) <br /> <br />20 <br /> <br />Figure 2. - CVR temperatures versus corresponding INW <br />temperatures for 50-mb levels from 850 to 500 mb. <br /> <br />The figures show a substantial temperature linear relationship, no readily recognizable relative <br />humidity relationship, and noisy but discernible linear relationships in the cases of wind <br />direction and speed. In the interpretation of wind direction plots (e.g., fig. 4), the effects of <br />transition through 3600 (points like [3550, 30] cluster near an axis) should be taken into <br />account. Clearly, effects of the presence of the intervening barrier, and to some extent the <br />separation distance between CVR and INW, have substantially impacted the relationships. The <br />relative humidity result is particularly of consequence because of its fundamental importance <br />to CLW. <br /> <br />Scatterplots for individual50-mb levels from the surface to 500 mb (not all given here) <br />indicated that, generally, the linear relationships were most prominent atthe 750-mb level <br />(figs. 6 through 9). This prominence is particularly true for relative humidity,. which is a <br />fortunate outcome because that level is a key layer to cloud seeding. <br /> <br />In the case of DRA versus CVR sounding variables, scatterplots (not included) indicated that, <br />with the exception of temperature, no readily discernible relationship was indicated. This result <br /> <br />4 <br />