170-188 nm, data of

D. Gillotay and P.C. Simon, "Ultraviolet absorption spectrum of trifluoro-bromo-methane, difluoro-dibromo-methane and difluoro-bromo-chloro-methane in the vapor phase", J. Atmos. Chem. 8, 41-62 (1989); DOI: 10.1007/BF00053815,

190-270 nm, mean of the data of

D. Gillotay and P.C. Simon, "Ultraviolet absorption spectrum of trifluoro-bromo-methane, difluoro-dibromo-methane and difluoro-bromo-chloro-methane in the vapor phase", J. Atmos. Chem. 8, 41-62 (1989); DOI: 10.1007/BF00053815,

L.T. Molina, M.J. Molina, and F.S. Rowland, "Ultraviolet absorption cross sections of several brominated methanes and ethanes of atmospheric interest", J. Phys. Chem. 86, 2672-2676 (1982); DOI: 10.1021/j100211a023,

J.B. Burkholder, R.R. Wilson, T. Gierczak, R. Talukdar, S.A. McKeen, J.J. Orlando, G.L. Vaghjiani, and A.R. Ravishankara, "Atmospheric fate of CF₃Br, CF₂Br₂, CF₂ClBr, and CF₂BrCF₂Br", J. Geophys. Res. 96(D3), 5025-5043 (1991); DOI: 10.1029/90JD02735, and

L. Orkin and E.E. Kasimovskaya, "Ultraviolet absorption spectra of some Br-containing haloalkanes", J. Atmos. Chem. 21, 1-11 (1995); DOI: 10.1007/BF00712435,

272-298 nm, mean of the data of

L.T. Molina, M.J. Molina, and F.S. Rowland, "Ultraviolet absorption cross sections of several brominated methanes and ethanes of atmospheric interest", J. Phys. Chem. 86, 2672-2676 (1982); DOI: 10.1021/j100211a023,and

J.B. Burkholder, R.R. Wilson, T. Gierczak, R. Talukdar, S.A. McKeen, J.J. Orlando, G.L. Vaghjiani, and A.R. Ravishankara, "Atmospheric fate of CF₃Br, CF₂Br₂, CF₂ClBr, and CF₂BrCF₂Br", J. Geophys. Res. 96(D3), 5025-5043 (1991); DOI: 10.1029/90JD02735,

300-350 nm, parameterization of

D.K. Papanastasiou, N. Rontu Carlon, A. Neuman, E.L. Fleming, C.H. Jackman, and J.B. Burkholder, "Revised UV absorption spectra, ozone depletion potentials, and global warming potentials for the ozone-depleting substances CF₂Br₂, CF₂ClBr, and CF₂BrCF₂Br", Geophys. Res. Lett. 40, 464-469 (2013); DOI: 10.1002/grl.50121,

with ≥336 nm values based on an extrapolation

The parameterization of the temperature dependence:(210-298 K, 260-350 nm) of Papanastasiou et al. (2013),

ln (σ(λ,T)) = ∑_i A_i (λ-λ*)ⁱ × [1 + (296 – T) ∑_i B_i (λ-λ*)ⁱ]

with the following parameters A_i and B_i and λ* = 280.376 nm:

-----------------------------------------------------
i    A_i        B_i
-----------------------------------------------------

0  -48.3578     0.0002989
1  -0.1547325    8.5306×10^-6
2  -4.966942×10^-4  2.64.268×10^-8
3  1.56338×10^-6   -1.84×10^-9
4   3.664034×10^-8     1.284×10^-11

is recommended