| OCR Text |
Show ... In the 19 67-68 season, only a few of the pulsed seeding events were attended by sufficiently invariant wind regim-es to allow detection of pulsing in the AAS : silver content values. An example of one such event is shown in Fi g ure 83. : fr Except for the one high value at 2300 MST, the peaks in the AAS time history ilii appear well correlated with calculated seeding effect pulses. Other examples va an: can be found in Parungo and Robertson (1969) . . Table 14, taken from their tat • under paper, lists average silver values by station and pre cipitation period, cot the stratification of seeded or non-seeded precipitation. It is obvious that arr silver the seeded samples, on the average, contained significantly more than the unseeded ones. The very high average values at the low altitude sites of Lufkin and Valley View probably reflect the effects of scavenging of Fr( Ill the low level concentrated silver iodide plume by falling dendrites. cat I nuc From two seasons of snow sample analysis it can be concluded that the AAS ,;ff IJJl precipiin content silver in changes detecting analysis method is capable of . ana tation which occur as the result of seeding, and it is a valuable support measurement in any weather modification experiment v.rhere silver iodide is lali used. 1 lno TABLE 14 '. ous anal : cal ,------- -----~- -------- -------- -------- -1: clou arri wer1 ~re( C1111ct·11Lralion (parts 1wr l,illi1111 ·1 of i-il\·,·r i11 sn ·.l,·d and uns,_'!'t!l'd <,now. rne Location I >:tit· I.ii t 11· I ,' I k1• l{111111d :\!111 . l!u:"l:d11 l'a,s I i-..lt ( 'rn·k IJ Jl,·c. 10 Ian . 11) 1:1·1,. 1%i l 1i<,X 9 Ike. 0 0 -i ll ()," fl 1!2 1.2 0.2 0.2 O_OS ll J>n· l,:d,t· 0 .111 IL1s1: Camp l~al,1,it Ears 0.11.2 l.11;,:.! l:1kt· ( 'olu111l,i11l' 1:alst· Tnp Lufkin \":d:t•,· \'i1.·w Thu,;,lnl1e:ul 0.1 \ 1)()8 () () 0 0.2 0. 1 () 0.1 1%i ll .2 .u, -1 .() 1.0 2.X 2.0 1.0 27 Ike . J f;u1 . tiJ(iS 1%i () 1 0. 7 1,0 -t .ll 1.U 0. 1$ {If 0 .-t 0.7 1.0 l.U 0.-t 0.1 () (J 2 ll.l ().(, () _,:; 0 .07 0.2 0.0-t 15 1:, .1,. l 1J(1S () . 2 0.2 (U 0 .-1 0 (U 4.2 OJ, 0 .-t l>:1ll' 21l 1:,.1,. 21 F1·l,. () _:; <U \90S 190~ J_() 22 1-'t ·ti. 190~ 0 .2 0 .2 0. 1 0.1 0. 1 0.1 () () o.•J 1.2 <U 0.9 () .~ 0.2 (U 0.2 u 6.0 0.6 () so II . I 2(, (·-..t,. ,\vcrage 1%,'S !U 0 -1 0.2.l O..J-l t>.S OJ., (J.i () _ (/.3 (J . .I 0 .2 I.S () (,(1 0.5 ().'~) 11 _.'-'J u~ 0,i.i O..,o OH 0.11, .us 2.2., o 2i --------- -------- -------- -------- -------- -1 t~. Mt. 144 |
