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<br />l46 <br /> <br />( 0) <br /> <br />(b) <br /> <br />--- <br /> <br /> <br />~~r <br /> <br /> <br />I 0 <br /> <br />JOURNAL OF APPLIED METEOROLOGY <br /> <br />1615 UTC <br /> <br />dBZ <br />00-9 <br />010-19 <br />1120-29 <br />.30> <br /> <br /> <br />'---0 <br /> <br />...... .... :... <br /> <br />~ . .......- ,,' .;.~.:..:.:::..:.:..:,~ <br />.a""".- -.- <br />roo- .. <br /> <br />..' ..... -- '-10-. <br />"\ <br /> <br />(0 ) <br /> <br />(b) <br /> <br />E8 <br />-=6 <br />1-4 <br />5 2 ,-0\ .', <br />wO <br />I 0 5 <br /> <br />I <br />5 <br /> <br />I I <br />10 15 <br /> <br />I <br />20 <br /> <br />I <br />25 <br /> <br />I I <br />30 35 0 5 <br />DISTANCE (km) <br /> <br />35 <br /> <br />1845 UTC <br /> <br /> <br />SAC. <br /> <br />..": :..-.........~... ...... -'. <br /> <br />:tQ: :$ <br />. N" . Hi <br /> <br />.:,............. <br />...../--. <br />'J ."2!!C- <br />. ."oC::: <br /> <br />-. <br />. <br /> <br />/' I" <br /> <br />10 15 20 25 <br />DISTANCE (km) <br /> <br />30 <br /> <br />3 <br /> <br />VOLUME 27 <br /> <br />1730 UTC <br />t? <br />& <br />o <br /> <br /> <br />- IU ---. - ..- - -- .-.-.- <br />./.-... "'--3 <br />,..----..... '_J'ao s-- <br />:....( "..,........ '."- <br /> <br />..-?4 <br />~ <br /> <br /> <br />10 <br /> <br />30 <br /> <br />15 <br /> <br />20 <br /> <br />25 <br /> <br />FIG. 5. The PPI and vertical cross section plots of radar <br />reflectivity which track the passage of a cold frontal rainband <br />on 8 February 1985. (a) PPI's constructed from 20 elevation <br />scans. Heavy dark line denotes the back edge of the rainband. <br />Vertical and horizontal axes marked every 25 km. The Cal- <br />ifornia-Nevada border transecting Lake Tahoe is shown on <br />the right-hand end of the x-axis. Wind barb symbol in first <br />panel describes band motion (full barb = 10 m S-l). (b) Vertical <br />cross sections are constructed from volume scans (10 -8 0 tilt <br />elevations) along the short line segment transecting the band's <br />back side in (a). In both (a) and (b), gray scaling is in 10 dBZ <br />increments starting with 0 dBZ. <br />