O3_BASSPAURLINEAR

Tables of the O3 cross-section at 6 different temperatures made by Bass-Paur. A complementary class, O3_BASSPAURQUADRATIC, provides the same data with superior quadratic temperature interpolation. The data are a world standard but show signs of age and are of limited wavelength extent with no measurements at wavelengths longer than 343 nm. They are at high wavelength sampling and high wavelength resolution.

Wavelength Range

The table covers the wavelength range 245.0180 to 342.7800 nm in 1956 samples, of approximately 0.05 nm per step. The spectral resolution is better than 0.025 nm.

Temperature Range

The Bass-Paur tables provide measurements at 6 temperatures:

  1. 203 K
  2. 223 K
  3. 246 K
  4. 273 K
  5. 276 K
  6. 280 K

This object piecewise linearly interpolates cross-sections in temperature.

Example

optprop = ISKOpticalProperty('O3_BASSPAURLINEAR')
msis = ISKClimatology('MSIS90');
mjd = 52393.3792987115;
location = [0.0, 0.0, 25000.0, mjd];
optprop.SetAtmosphericState( msis)
optprop.SetLocation(location)
[ok, abs, ext,sca] = optprop.CalculateCrossSections( 1.0E7/600.0, location );

Data Source

These data are an exact replication of the data files,

  • bp_203clc.dat
  • bp_223clc.dat
  • bp_246clc.dat
  • bp_273clc.dat
  • bp_276clc.dat
  • bp_280clc.dat

on the IGACO site, http://igaco-o3.fmi.fi/ACSO/files/cross_sections. The files were copied on July 25 2012. Note that the entries for 282.470 nm and 282.460 nm were swapped around as they are in the wrong order in the original files.

Properties

SetTemperature (double n)

Sets the temperature in Kelvins that will be used in the next calculation of cross-sections.

References

Bass, A. M. and Paur, R. J., The ultraviolet cross-sections of ozone, I. Measurements. Proc. Quadrennial Ozone Symp. Halkidiki, Greece, Reidel, Dordrecht, pp. 606–610, 1984

Bass, A. M. and Paur, R. J., The ultraviolet cross-sections of ozone, II Results and temperature dependence. Proc. Quadrennial Ozone Symp. Halkidiki, Greece, Reidel, Dordrecht, pp. 611–616, 1984