|
| OZONE |
| NATURAL AND ANTHROPOGENETIC
POLLUTION LIMITS OF THE STRATOSPHERIC OZONE
|
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|
The separation between natural and anthropogenetic pollution |
| |
 |
| The "natural limit" of the ozone
concentration can be obtained if the lifetimes of the ozone pollutants are in
the range of 10-7 ÷ 10-8
s. |
| |
| The biosphere stability |
The filtering of the UV solar radiation, especially that of the UV-B domain (240 - 320 nm), is extremely important for biosphere, this radiation being the main source of mutant ADN. |
|
Bouger-Lambert-Beer relation |
 |
Transmission coefficient T |
| ΔT < 0.01 |
The criterion of the sufficiency of the ozone layer stability |
| |
| The simulator of the ozone layer stability |
| The input data |
|
Chemical and photochemical data* |
Measurement unit |
Measured data** |
|
The oxygene system |
|
|
|
C[O2] |
cm-3 |
2 × 1017 |
|
J1 |
s-1 |
6 × 10-8 |
|
k2 |
cm6s-1 |
1.14 × 10-33 |
|
J3 |
s-1 |
1.1 × 10-3 |
|
k4 |
cm3s-1 |
9.16 × 10-16 |
|
Iλ0Δλ
|
cm-2s-1nm |
3
× 1015 |
|
The hydrogen system |
|
|
|
k5 |
cm3s-1 |
2.55 × 10-14 |
|
k6 |
cm3s-1 |
3 × 10-11 |
|
The nitrogen system |
|
|
|
C[N2] |
cm-3 |
8.17 × 1017 |
|
J7 |
s-1 |
8.6 × 10-3 |
|
k8 |
cm3s-1 |
4.31 × 10-15 |
|
k9 |
cm3s-1 |
9.3 × 10-12 |
|
The chlorine system |
|
|
|
k10 |
cm3s-1 |
9.03 × 10-12 |
|
k11 |
cm3s-1 |
4.42 × 10-11 |
|
k12 |
cm3s-1 |
1.7 × 10-12 |
|
k13 |
cm3s-1 |
3.81 × 10-11 |
|
k14 |
cm3s-1 |
4.31 × 10-13 |
|
J15 |
s-1 |
1.2 × 10-5 |
|
J16 |
s-1 |
5.6 × 10-5 |
|
Measurements at 30 km altitude (T = 227 K, p = 8.98 mm Hg = 12 hPa)
Measurement data have been reported in J. Levine, The Photochemistry of atmosphere, Earth and other planets and the comets, Academic Press, New York, 1985 |
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