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AGU: Geophysical Research Letters

 

Index Terms

  • Planetology: Comets and Small Bodies: Radiation and spectra
  • Mineral Physics: Optical, infrared, and Raman spectroscopy
  • Atmospheric Composition and Structure: Transmission and scattering of radiation
  • Meteorology and Atmospheric Dynamics: Remote sensing
  • Atmospheric Composition and Structure: Planetary atmospheres

Abstract

GEOPHYSICAL RESEARCH LETTERS, VOL. 29, 1752, 4 PP., 2002
doi:10.1029/2002GL015330

Evaluation of spectroscopic databases of water vapor between 585 and 600 nm

B. Veihelmann

Atmospheric Photophysics Group, FOM-Institute AMOLF, Amsterdam, Netherlands

R. Lang

Atmospheric Photophysics Group, FOM-Institute AMOLF, Amsterdam, Netherlands

K. M. Smith

Space Science and Technology Department, Rutherford Appleton Laboratory, Didcot, Oxfordshire, UK

D. A. Newnham

Space Science and Technology Department, Rutherford Appleton Laboratory, Didcot, Oxfordshire, UK

W. J. van der Zande

Atmospheric Photophysics Group, FOM-Institute AMOLF, Amsterdam, Netherlands

The water vapor absorption band between 585 and 600 nm is suitable for atmospheric water vapor column retrieval from satellite data because saturation effects are absent and water is the only significant structured absorber within this region. Accurate knowledge of the absorption spectroscopy is important for the retrieval as well as for assessing radiative forcing. Spectral databases for this wavelength region lack experimental validation by atmospheric observations. By means of a line-by-line radiative transfer model we simulate the direct solar radiation reaching the ground using different spectral databases. We compare simulated spectra with high resolution measurements made using a ground based Fourier transform spectrometer. Instrument effects are considered and residuals are assigned to line intensity errors as far as possible. A quality estimate of four different databases is provided and the consequences for satellite based instrumentations are discussed.

Published 15 August 2002.

Citation: Veihelmann, B., R. Lang, K. M. Smith, D. A. Newnham, and W. J. van der Zande (2002), Evaluation of spectroscopic databases of water vapor between 585 and 600 nm, Geophys. Res. Lett., 29(15), 1752, doi:10.1029/2002GL015330.

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