122 REPORTS ON THE STATE OF SCIENCE. 
Increase in Wind Velocity—continued. 
B=Berlin, E=England. N=number of observations for England. 
: | | | | | 
Heights | ear los km, 1:0 km, 1:5 km, 20 ay 2:5 hm. 80 km. 
| | 
{ | - | | | 
Year. 
Al Bs 69} 63 71 Tl) 75 85 92 | 
E, 59 1 60 | 78 O91 |} 88 | 91.) 87 | 
y fae 53 3 | 40 46 | 45 | 50 | 6-4 | 
"1E. 57 | 46 | 56 | G1 | 53 | 64 | 10-4 | 
SoBe B4 1°41") ‘#7 | £6 | a0) eo) “es | 
ae te 59] 50 | 59 | 53 | 7) 52) 51 | 
g, {B: 59 1 67 | 64 | 73 | 70 | 87 | 90 
yl ts to! gadkers 441 56 | 81 | 91 | TH iBT a T71 
B. 59 | 51 | 56 | 59 | 60 | 68 | 77 | 
Mean of Means jp | || 55 | 53} 69 | 74 | 68 | 69 | 78 | 
Mean forall windsirrespective of | | 
46 | 43 | 481 56°64 | 
magnitude for Berlin, 1905-6-7 4:9 | 4:3 — 
The velocity therefore increases with the height, but there is little 
change between 1 and 2km. The smallest increase is in N. and E. winds, 
but in summer the increase in E. winds is progressive throughout. The 
increase in the first 500 m. is always less in summer than in winter, corro- 
borating the results found from the rotation with regard to the effect of 
convection. The following table gives the results for Berlin deduced from 
those cases only in which a height of 3 km. was reached, and the wind 
at 1 km. was 5 m.p.s. and upwards :— 
Deviation and Increase in Wind Velocity, Berlin. 
Heights | FOE {05 km. 1-0 km. 1:5 = km #0 km 2:5 km. 3-0 km. 
| | | 
ee [a tee Ae 
; = = on - . oa | spite: | aoe | o1°°) 19° (aqme eae 
44 ogseayf Vi 5 ei) og | 59, | 1582 | 69 | 67 | 70 | eemieD 
f ae aes — | 18° | 293° | 25° | 24°] 95° | 25° 
14 cases f V. | 6. 1i43,| 48 | 3 | 55 | Somes 
KE. )R: | —, | 26° | 27° | 34° | 37° | semi gue 
16 cases f V. a3-[ 54 | 53 | 56 | 61 | Gol 63 
8. = — | 35° | 45° | 44° | 45° | 46° | 46° 
30 cases{V. . 57 -| 64 | 63 | 60 | 69 | 82 | 9-0 
Mean of all } R. == }) 24e" | 29° | 30° || 30° 1) Sige sae 
104 cases V byte bib 5:9 61 66 76 8:3 
Thus except for E. winds there is no change in the rotation between 
1 and 2 km., and for W. winds there is no change in the velocity in the 
same layer. 
The following table gives the frequency of different rotations for a 
height of 500 m. at Berlin (Lindenberg) :— 
ce i 2 o | ° ° ° ° ° o!o o lo 
Deviation in 4-8 ~93 meilig 11 | 23/84 45 56/68 79/90 101 Total 
| 
degrees ae | 
} 7 r ras <a le eee 
Ww. (—|—| 5 | 4 )35)) 24/37 10!1615|2/—/1|—| 139 | 
N. |} —|—| 2) 3 |15] 7] 8j—| 6'—-;2}-|—|-| 42 | 
E, ) 1} —|—| 1 fii 3/18) 4) 9 2) 2]2)2)—)- 49 | 
| 8. 1, of ——aeBes| lel oF 1 ASS 2/3 ie: | Sale Eelam 
