no. 3 



RADIATION OF THE ATMOSPHERE ANGSTROM 



133 



Table 4. — Results of sounding balloon ascensions, Avalon, Cal. — Continued 

 August 8, 1913 — Continued 



Time 



Alti- 

 tude 



Pres- 

 sure 



Tem- 

 pera- 

 ture 



At 



h. m. I 

 5 54-8 

 5 56.2 



6 13.8 



M. 



8,215 

 8,650 

 8,850 

 9,000 

 9,080 

 9,700 

 10,000 

 10,415 

 10,730 

 11,000 

 11, 57S 

 12,000 

 12,080 

 12,700 

 13,000 j 

 13,250 

 14,000 

 14,100 



Mm. °C. 



-15.9 



I -19-5 



' — 20 . 7 



I -21.3 



-21.7 



' —24.3 



, —26.1 



—28.7 



; —29.8 



-3i-5 



—35-0 



; -35-8 



—36,0 



; —37-2 



1-38.7 



' -39-8 



' —43-4 



' -43-9 



0.6 

 0.8 

 0.6 



0.4 



0.4 



0.6 

 0-3 



0.2 

 0.2 



0.5 

 0.5 



Humidity 



Rel. 



Abs. 



Wind 



Direction | Vel. 



Remarks 



P. ct. 

 45 

 45 

 45 

 44 

 44 

 43 

 43 

 42 

 42 

 42 

 4^ 

 41 

 41 

 40 

 40 

 40 

 40 

 40 



0.582 

 0.422 

 0.375 

 0.346 

 0-334 

 0.256 

 0.215 

 0.162 

 0.145 

 0.124 

 0.086 

 0.077 

 0.076 

 0.065 

 0.055 

 0.049 

 0.033 

 0.031 



S. 18° w.. 



M.p.s. 



14.0 6/10 S. Cu. SSE. Bal- 



loonsdisappeared in 



'• St. Cu. Observa- 



' tions of ascension 



I were made through 



' this film of St. Cu. 



which at times ob- 

 scured balloons 

 j after 5:26.5 P. rn. 



August 10, 1913 



A. M. 



4 43 -o] 

 4 45-7; 



4 48.2; 



52.4 

 54-9 



00.9 

 03.0 



5 13. 1 



34 



435 



5oo 



832 



1,000 



1,036 



1,500 



1,549 



1,976 



2,000 

 1,500 

 i,385 

 1,253 

 1,000 



765.9 

 722.6 



690.3 



674.3 



635.7 

 604.8 



23-4 

 21.3 

 21.9 

 24.7 

 24-5 

 24-5 

 23-3 

 23.2 

 19-3 



58 



0.5 57 



: 52 



0.9 27 



! 21 



O.I ' 20 

 ' IS 



0.3 14 



0.6 : IS 



12.077 

 10.522 

 9-937 

 6.052 

 4-654 

 4-432 

 3.106 

 2.882 

 2.464 



16.6 

 18.3 



702 



600 

 5oo 

 360 

 263 



647.8 

 657-7 



694.2 

 700.8 



728.9 

 737-1 



19.0 15 2.421 



21.0 13 2.358 



21.5 0.7 13 2.428 



22.4 ' 0.8 9 1.770 



24.5 8 1.773 



26.2 —0.3 7 ! 1,706 



24.1 0.2 7 1. 517 



24.3 -o-5 7 1-534 



23.7 16 3-389 



23.0 I—1.8 27 5.495 



zi.3 1 44 8.122 



N.46°E.. 

 N.24°E.. 

 N. 5°E.. 

 N.8 9 °W. 

 S. 88° W. 

 S.87°W. 

 N.47° W. 

 N.42° W. 

 N.47°W. 



N-47" W. 

 N.43° W 

 N-42° W. 

 N.23°W. 

 N.44° W. 

 N.61 W. 

 N.68 W. 



2.8 

 1.1 

 i-7 

 4.0 

 3-5 

 3-4 

 2.3 



1.5 

 3-9 



Cloudless. 

 Inversion. 



One balloon became 

 detached; the other 

 balloon with the 

 meteorograph slow- 

 ly descended. 



Inversion. Balloon 

 disappeared behind 

 the mountains. 



Inversion. 



The distribution of pressure at the earth's surface changes but little in 

 type, and that never abruptly, during the period of observation, nor does the 

 pressure itself vary much from day to day. Figures 7 and 8 show the pressure 

 distribution in a general way for the whole period. The positions of the 

 centers of high and low pressure at 8 a. m. or 8 p. m., seventy-fifth meridian 

 time, are shown by the circles, in which dates are also indicated. In the case 

 of high pressure, these circles are connected by solid lines ; in the case of low 

 pressure, by dashed lines. 



In three of the ascensions, July 24 and 27 and August 3, the balloons were 

 followed with the theodolite beyond the altitude at which the minimum tem- 



