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Table 9 Photoprocess data for HNO 3
Wavelength (nm)
F(l) (photon cm 2 s 1 )
s (cm 2 molecule 1 )
f
2.66 10 13
0.409 10 20
295-305
1
4.20 10 14
0.146 10 20
305-315
1
1.04 10 15
0.032 10 20
315-325
1
1.77 10 15
0.005 10 20
325-335
1
1.89 10 15
335-345
0
1
2.09 10 15
345-355
0
1
deposition velocity for HNO 3 is 0.005 cm s 1 over a 1 km well-
mixed boundary layer and the photoprocess data given in Table 9.
What is the atmospheric lifetime of HNO 3 ?
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