Publication Abstracts

Ma and Tipping 2003

Ma, Q., and R.H. Tipping, 2003: A simple analytical parameterization for the water vapor millimeter wave foreign continuum. J. Quant. Spectrosc. Radiat. Transfer, 82, 517-531, doi:10.1016/S0022-4073(03)00175-4.

We present a theoretical calculation of the millimeter wave foreign continuum due to colliding pairs of H2O-N2 molecules. The theory is formulated using the symmetrized spectral density which ensures that the principle of detailed balance is satisfied. It is based on the Lanczos algorithm, and the resulting tri-diagonal matrix is written in terms of continued fractions. The calculations are carried out in the coordinate representation in which the basis functions are delta functions whose arguments are the angular variables necessary to specify the molecular orientations. In this representation, the anisotropic interaction potential responsible for the continuum absorption is diagonal, and the ensemble averages over the states become multidimensional integrations. These are computed using the Monte Carlo method. The results, computed for a range of temperatures relevant to the atmosphere, are compared to laboratory measurements and to widely used empirical models. For easy use, we fit our results for the absorption coefficient to a simple analytic function of frequency and temperature.

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BibTeX Citation

@article{ma06400f,
  author={Ma, Q. and Tipping, R. H.},
  title={A simple analytical parameterization for the water vapor millimeter wave foreign continuum},
  year={2003},
  journal={J. Quant. Spectrosc. Radiat. Transfer},
  volume={82},
  pages={517--531},
  doi={10.1016/S0022-4073(03)00175-4},
}

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RIS Citation

TY  - JOUR
ID  - ma06400f
AU  - Ma, Q.
AU  - Tipping, R. H.
PY  - 2003
TI  - A simple analytical parameterization for the water vapor millimeter wave foreign continuum
JA  - J. Quant. Spectrosc. Radiat. Transfer
VL  - 82
SP  - 517
EP  - 531
DO  - 10.1016/S0022-4073(03)00175-4
ER  -

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