Chappius bands

It should be noted that the foregoing considerations apply to the major absorption bands. In some cases, weaker absorption bands of the major greenhouse gases can be sufficiently weak to fall in the linear region. This is the case, for example, for light absorption by 03 in the Chappius band, even if the strong Hartley-Huggins band (see Chapter 4.B) is saturated (e.g., see Lacis et al., 1990). 

The important bands for ozone are the Hartley bands between 2000 and 3000 angstroms in the ultraviolet, with a very intense maximum absorption at 2550 angstroms the Huggins bands, weak absorption between 3200 and 3600 angstroms the Chappius bands, a weak diffuse system between 4500 and 6500 angstroms in the visible spectrum and the infrared bands centered at 4.7, 9.6 and 14.1 microns, the latter being the most intense. 

Fig. 5. Absorption spectrum of ozone in the Huggins and Chappius band regions. This figure based on ref. (48) and used with the permission of the Journal of the Optical Society of America.

Banichevich, A., Peyerimhoff, S.D., Beswick, J.A., and Atabek, O. (1992). Dynamics of ozone photoabsorption A theoretical study of the Chappius band, J. Chem. Phys. 96, 6580-6590. 

Braunstein, M. and Pack, R.T. (1992). Simple theory of diffuse structure in continuous ultraviolet spectra of polyatomic molecules. III. Application to the Wulff-Chappius band system of ozone, J. Chem. Phys. 96, 6378-6388. 

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