100,000
=
whe
90,000
e
>
346
—_@—
a
>
—__—_@——___—_
.
58
80,000f-
70,000
Oo
©
258
OY
60,000
eo
6
—
337
Bo
tte
ng
50,000
¢
Oo
Oo
Oo
———_}—_—
40,000
300
|
305
310
3I5
|
320
325
COs ABUNDANCE, ppm.
Fig. 8 -- Carbon dioxide gradient measurements attempted in the
upper atmosphere