Interaction at mm and optical frequencies. Pt. 2 Specific atmospheric absorption and emission features: Investigation and modelling. Final report

Abstract

This study deals with: Numerical analysis of the accuracy of recent models for atmospheric molecular absorption, in particular, studies of line mixing, line narowing (Dicke effect) and line shift effects; Establishment of a radiative transfet code for the computation of non-LTE outgoing radiation in the infrared spectrum; Analysis of up-to-date accuracy of initial spectroscopic information and its influence on outgoing radiation calculations in different spectral domains; Numerical investigations of the errors due to calculations of transmittance and outgoing radiation by k-distribution method. The investigations performed permit a more accurate estimate of up-to-date methods and algorithms for the calculation of atmospheric radiative transfer and to supply enhanced radiative transfer codes. (orig./KW)SIGLEAvailable from TIB Hannover: RR 1857(18) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekEuropean Space Agency (ESA), 75 - Paris (France)DEGerman