SOME MEASUREMENTS OF ATMOSPHERIC TURBULENCE. 
23 
Eddy-stresses and of Eddy-dijfusivity (continued). 
^ . 1 _ 
yy M xy 
dynes peydynes per'dynes per 
square square square 
centi- centi- j centi¬ 
metre. j metre. metre. 
yh 
dynes per 
square 
centi¬ 
metre. 
lix 
dynes per 
square 
centi¬ 
metre. 
C‘0x 
dh 
sec."" 1 . 
Conductivity. 
= pK 
grm. cm. 1 sec. _1 . 
Diffusivity. 
K 
cm. 2 sec. -1 . 
Turbulivity. 
$ = gVK 
grm. 2 cm. 2 
sec. -5 . 
— 
— 
— 
— 
— 
— 
2-5 
2,000 
3,000 
— 
•— 
— 
— 
9-3 
7,500 
11,000 
— 
— 
— 
— 
— 
— 
6 
5,000 
7,000 
— 
— 
— 
-— 
— 
12 
10,000 
14,000 
— 
-5 
— 
— 
— 
120 
10 5 
1•4 x10 5 
— 
•— 
_ 
<0-9 x 10 3 
<10 5 
<0-8 x 10° 
- 110 
— 
_ 
! _ j 
—- 
0-12 
100 
140 
— 
•— 
— 
— 
12 
10,000 14,000 
_ 
-1 
IY. 1917, June, 25d. 20h. 5m. L.A.T., Joinville, France. Moor with herbage dense to 10 cm. and 
rising thinly to 50 cm. 
Y. 1917, October, 4d. 8jh. G.M.T., Massiges, France. Flat moor with grass to 10 cm. and stems rising 
to 30 cm. Trees up-wind subtending an angle of 10 degrees. Overcast with strato nimbus, of 
which velocity/height = 0-025 sec. -1 . Temperature 0°-15 C. Observers: Olae Stapledon and 
L. F. Richardson. Eddies partly due to observer. 
VI. See photographs and description in this paper. 
VII. 1917, July, 18d. 7fh. L.A.T., Maffrecourt, France. Moor, with small trees, 5m. high and houses. 
Overcast, 
