OVED AL REM I R E T A M T C A y e n Ma fo oe weouple of cases) by hand clinometer, and weer token by Air Weather Service «personnel by theodolite. Charlie cloud, These two setéwee very well in all cases except | On the graph, the average of the two fa indicated by the sircled ad ‘wot, with the outriggers showing the values themselves. Dpaxation ‘Three surfece vessels andi three sircratt were iwengaged in making Cloud rise and height measurements of Mile cloud. Of these cose? failed to make any height measurements until H + 9} OF nine, and one aixpienemade , *oe — the etratosphere (above 50000 ft on Mike day) the second average was taken of =.” m@pariiey measurements. é, Tes Tete es measurement, at approxinttely H € 40 set, before HT 5 ming It is not sibel that timing was very eccurate on this measurement so it wes discarded. “The other measurements shored the sloud to have opurcached maximum sititude at 3 minutes so in addition to the 3 minute average an eversye was obtained using Since there is reasan to believe the rato to decrease in ~: egbservations below thet height. son the graphs (1) The two averages are shown as horizontal lines — ( three ainute belghts: U.5.5 Anmtiss 100, 500 ft. U.5.S.flendova 117,000 ft. -Adrersft Now _ Aircraft Ros 2 ahverage ‘. - 111,000 ft, | hBZ Pte eo 314,000 ft. in 3 min. : x (2) -Extrapelation of troposphere rates: UeSeSo Curtiss Co Po se ; ~wi6,600 ft. at 1 ain. £99,000wt/2 UsSeSe Bendova ~o @erly measurements Mireraft No. 1 56,200 fte at 1¢ min. :216,800 $t/3 awhircrafit Moe 2 > early peasurements ~Average “28,100 tt/'3 “Three surface vessels and two alrersft made peammenents of the King @loud, “and el] date are on hand except that frat ene curfece vessel. ihe three minste ‘gheights are as follows: . UeSeSe Oak HLL UsSeSe Rencovs L BB, 300 &6, 100 — -sAlrervaft Ro. i vAdreraft Noe 2... 74 x : 9200 03,000 (Doubtful) Average 356,400 ‘4The average is plotted on the graph. '@. ~Considerable improvement in this reletionship might well result from pore repecurate determination of the rete of rise and in particular of the meximm rate, ° send trom development of a correction factor for variations in the esbient air 4 ‘lapee rate of temperature. wee any fe he 1 Atchmt «+ & Aah , Chart ue" . ee gs aus a + ~~ mm * .% a P. We ALLEN » sf ' wes. i . oy, :

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