15
ae
|
30
|
10 -—
20
a
—_
|
STRATOSPHERIC
|
SAMPLING PERIOD
MEAN: 20 MT OR
5 -—
Lag
2
=
40 MC/SQ MILE
{0
|
5 o2
3
>
2
=
3
n
Ee
t
oO
2f-
uJ
=
u
wn
{FE
O5
2
ee
}
0.3
1952
|
1953
1954
:
1955
1957
0.6
Fig. 7 — Stratospheric inventory.
80
7
70 }—
* 60;
3
+
—
y4
—
a
++
_ 50 eo
uw
8
_
2
+
Oo 40 F—
~~
+
=
+
+ +?
Py 30 F—
o
+
+
;
+
|
2
60
+
++
+
+
;
—
+
+
_
++
—
+
+
++
+
+
+F
40 E30
+
+++
Boo
n
0
*
+
+
+tety
30
—
t
.
LL
0
NORTH
60
SOUTH
Fig. 8 — Stratospheric Sr® content, Winter, 1956-1957. ~---, calculated average value assuming 20 Mt, tropopause at 45,000 ft, and a filter efficiency of 25 per cent.
335
~
30
aoe ba ete
rer etehae