Vol. 19, issue 01, article # 2

Ptashnik I.V. Numerical simulation of possible laboratory measurements of water vapor continuum absorption in the near IR region. // Atmospheric and oceanic optics. 2006. V. 19. No. 01. P. 17-24.
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Abstract:

Water vapor continuum absorption is an important component of molecular absorption of radiation in the atmosphere. However, the uncertainty in the value of continuum absorption in different spectral regions can achieve 100%, leading to errors in the flux calculation up to 3-5 W/m2 (global mean). Based on line-by-line calculations, this paper presents optimal spectral intervals for laboratory verification of air-broadened water vapor continuum absorption in the near-infrared spectral region, in which the continuum absorption is studied most poorly today. Possible sources of systematic and random errors, taken into account in the simulation, include the spectrometer sensitivity and uncertainties in spectral line parameters in the HITRAN-2004 database.

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