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<br />I <br />I <br />I <br />I <br />I <br />I <br />'I <br />I <br />'I <br />I <br />I <br />I II <br />'I <br />, 111 <br />II <br />'II <br />I <br />I <br />I <br /> <br />Figure 4.29 Same as Fig. 4.28, except for cloud top temperature.. 40 <br /> <br />Figure 4.30 Cumulative percentage of the height of water <br />saturated and ice super saturated layers for the <br />upper air stations located in the vicinity of the <br />TVA region. Data includes all soundings taken <br />during March, April and May from 1982 through 1987. . 41 <br /> <br />Figure 4.31 Same as Fig. 4.30, except the cumulative percentage <br />is for the temperature of water and ice supersat- <br />urated layers. ................ . 41 <br /> <br />Figure 4.32 ,Frequency of occurrence of one or more water or ice, <br />supersaturated cloud layers observed on the HTS <br />sounding by month and year. . . . . . . . . . . 42 <br /> <br />Figure 4.33 Frequency distribution of the height of water <br />saturated and ice supersaturate~ layers for <br />soundings taken at Huntington, West Virginia. <br />Data include soundings taken during March, April <br />and May from 1982 through 1987. Layers with <br />temperatures warmer than 0 oC were excluded from <br />the analysis. . . . . . . . . . . . . . . . . . 44 <br /> <br />Figure 4.34 Same as Fig. 4.33, except for water saturated <br />layers only. ................. 44 <br /> <br />Figure 4.35 Same as Fig. 4.33, except for the temperature of <br />water saturated and ice supersaturated layers... 45 <br /> <br />Figure 4.36 Same as Fig. 4.34, except for the temperature of water <br />. saturated layers only. . . . . . . . . . . . . 45 <br /> <br />Figure 4.37 Frequency distribution of the temperature of water <br />saturated layers for soundings taken at Huntington, <br />. West Virginia. Layers with temperatures from <br />-38 to +20 oC were included in the analysis.. . . . . 46 <br /> <br />Figure 5.1 Relationship of rainfalJ to runoff in the Tennessee <br />Valley by month. .................. 50 <br /> <br />Figure 5.2a,b (a) Infrared enhanced satellite image for 1600 GMT 29 <br />March 1984 showing shallow orographic cloud over the <br />eastern TVA region. . . . . . . . . . . . . . . 51 <br /> <br />(b) Same as (a), only visible image at 1630 GMT.. . . 51 <br /> <br />Figure 5.3 <br /> <br />500 mb map for 1200 GMT 29 March 1984.. . . <br /> <br />. 52 <br /> <br />ix <br />