NO. 



RADIATION OF THE ATMOSPHERE — ANGSTROM 



143 



Table 12 contains the temperature differences at 100-meter intervals above 

 the surface, as observed in all three ascensions. The mean gradient is 0.70 

 and is fairly constant at all altitudes up to 900 meters. 



FREE-AIR OBSERVATIONS AT LONE PINE, CAL. 



The balloon ascensions were carried out by ,Mr. P. R. Hathaway from a 

 place about 1 kilometer north of Lone Pine. The instrumental and other 

 equipment was similar to that used at Mount Whitney. Owing to leakage of 

 a large number of gas tubes, only four ascensions were possible. These were 

 made on August 1, 2, 3, and 4, and were begun shortly after sundown. Surface 

 conditions for making ascensions at this time of day were usually excellent. 



Table 13. — Results of captive balloon observations at Lone Pine, Cal., 

 August 1-4, IQ13 



Surface 



At different heights above sea 



Date and hour 



Pres- 

 sure 



Tem- 

 pera- 

 ture 



Rel. 



hum. 



Wind 



direc- Height 

 tion ! 



Humidity 



Rel. 



Abs. 



Wind 

 dir. 



Aug. 1- 1913: 



9:18 p. m. . 



9:30 p. m.. 



9:37 p. m.. 



9:44 p. m.. 



10:10 p. m. 



10:15 p. m. 



10:43 P- m. 



10:48 p. m. 

 Aug. 2, 1913: 



7:38 p. m.. 



7:41 p. m.. 

 ■ 7:47 p. m.. 



8:01 p. m.. 



8:48 p. m.. 



9:30 p. m.. 



10:48 p. m. 



10:56 p. m. 



11:05 p. m. 



11 :i3 p. m. 



11:19 p. m. 



11 :25 p. m. 

 Aug. 3, 1913: 



7:17 p. m.. 



7:21 p. m.. 



9:25 p. m.. 

 Aug. 4, 1913: 



7:19 p. m.. 



7:22 p. m.. 



7:34 P- m.. 



7:56 p. m. . 



8:02 p. m.. 



8:05 p. m.. 



8:55 p.m.. 



Mm. 



660 



660 



660 



660 



660 



660 



661 



658 

 658 

 658 



659 

 660 

 660 

 662 

 662 

 662 

 662 

 662 

 662 



661 

 661 



664 



656 

 657 

 657 

 65S 

 658 

 658 

 65S 



°C. 



16.7 

 16.7 

 16.8 

 17.2 

 18.3 

 16.7 

 16.7 

 16.7 



23-9 

 24.2 

 22.6 

 19.4 

 19.7 

 18.6 

 17.5 

 18.0 

 16.4 

 16.7 

 17.0 

 17.2 



21 .7 

 21.7 

 22.9 



19.9 

 19.8 



21 .0 

 22.2 

 22.7 

 23.0 

 26.4 



P. ct. 

 79 

 79 

 78 

 77 

 72 

 80 

 78 

 78 



46 

 45 

 48 

 64 

 57 

 66 

 69 

 64 

 77 

 75 

 70 

 70 



54 

 54 

 37 



58 

 57 

 43 

 39 



Calm. 



Calm. 



Calm. 



Calm. 



W. 



Calm. 



S. 



s. 



NNW. 



NNW. 



NNW. 



S. 



Calm. 



Calm. 



S. 



S. 



S. 



S. 



W. 



w. 



Calm. 

 Calm. 

 SSW. 



M. 

 i,i37 

 1,190 

 1,296 

 1,297 

 1,311 

 i,47° 

 1,204 



i,i37 



i,i37 

 1,253 

 i,355 

 i,958 

 2,273 

 i,8n 

 1,724 

 1,728 

 1,432 

 1,316 

 1,234 

 i,i37 



i,i37 

 1,296 

 i,i37 



P. ct. 

 79 

 50 

 37 

 37 

 28 

 24 

 46 



./cu.m. 

 11 .1 



9.1 



7.2 



6.9 



5-7 



4.9 



9.0 

 11. o 



9.9 

 7-7 

 4-4 

 3-5 

 3-8 

 4.0 

 4.0 

 4.0 

 5-0 

 5-o 

 4-9 

 10.2 



10.2 

 7.2 

 7-5 



6-7 



Calm. 



W. 



W. 



W. 



W. 



W. 



s. 

 s. 



NNW. 



N. 



N. 



Calm. 



SE. 



SE. 



SW. 



SW. 



SE. 



E. 



E. 



W. 



Calm. 

 SSE. 

 SSW. 



Calm. 



SE. 



SE.. 



SSE. 



SSE. 



SSE. 



S. 



Aug. i, 1913. — One captive balloon was used; capacity, 28.6 cu. m. Cu. Nb., from the 

 west, decreased from 5/10 to a few. Light rain fell for about two minutes at 9.35 p. m. 



Aug. 2, 1913. — One captive balloon was used; capacity, 31. 1 cu. m. St. Cu., from the 

 south, decreased from 6/10 to a few. 



Aug. 3, 1913. — One captive balloon was used; capacity, 31.1 cu. m. 1/10 Cu., direction 

 unknown, disappeared before the end of the ascension. 



Aug. 4, 1913. — One captive balloon was used; capacity, 31.1 cu. m. The sky was 

 cloudless. 



