Ft.
100,000 A->77y
TT 7
T
1
1
!
—
T
|G
‘
2000
\
200
OF Be-T
/
\
300
XN
—
961
980 yes
I
884]
|
786
563
60,000
+-o &38
’
O 391
763
485
420
NRL SURFACE STATION
EQUILIBRIUM CONCENTRATION
309
500
1000
80,000
‘\‘
2734
\. {298
1 '66
‘162
26400
P|
TTTTL 30
AIRCRAFT OBSERVATION
QO
\
Km.
TTT
/
\
/
/
yf
/
/
IN
7
dpm/1O00 scf
/
/
500
1000
25
2000 :
/
4
=
1967 || 926
1036
O 585
4
492
385
~
MEAN” TROPOPAUSE
20
40,000
20,000--
4
ne SS
0 30
O45 ao
é
OU t gd
90° 60°
oi,
tg
30°
lo
20
to
o°
oO
ft,
NORTH
L 5
o
tf O°
3° Jy
30°
J
ft Jo
60° 90°
SOUTH
Be’ d/m/1000 scf
MAY 1960
Fig. 7 -- Comparison of observed beryllium-7 data with computed
equilibrium concentrations.
395