Birk, Manfred and Wagner, Georg (2016) Voigt profile introduces optical depth dependent systematic errors – detected in high resolution laboratory spectra of water. Journal of Quantitative Spectroscopy and Radiative Transfer, 170, pp. 159-168. Elsevier. doi: 10.1016/j.jqsrt.2015.11.008. ISSN 0022-4073.
![]() |
PDF
398kB |
Official URL: http://www.sciencedirect.com/science/journal/00224073
Abstract
The Voigt profile commonly used in radiative transfer modeling of Earth’s and planets’ atmospheres for remote sensing/climate modeling produces systematic errors so far not accounted for. Saturated lines are systematically too narrow when calculated from pressure broadening parameters based on the analysis of laboratory data with the Voigt profile. This is caused by line narrowing effects leading to systematically too small fitted broadening parameters when applying the Voigt profile. These effective values are still valid to model non-saturated lines with sufficient accuracy. Saturated lines dominated by the wings of the line profile are sufficiently accurately modeled with a Voigt profile with the correct broadening parameters and are thus systematically too narrow when calculated with the effective values. The systematic error was quantified by mid infrared laboratory spectroscopy of the water 2 fundamental. Correct Voigt profile based pressure broadening parameters for saturated lines were 3-4% larger than the effective ones in the spectroscopic database. Impacts on remote sensing and climate modeling are expected. Combination of saturated and non-saturated lines in the spectroscopic analysis will quantify line narrowing with unprecedented precision.
Item URL in elib: | https://elib.dlr.de/99869/ | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Document Type: | Article | ||||||||||||
Title: | Voigt profile introduces optical depth dependent systematic errors – detected in high resolution laboratory spectra of water | ||||||||||||
Authors: |
| ||||||||||||
Date: | 2016 | ||||||||||||
Journal or Publication Title: | Journal of Quantitative Spectroscopy and Radiative Transfer | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Open Access: | Yes | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | Yes | ||||||||||||
In ISI Web of Science: | Yes | ||||||||||||
Volume: | 170 | ||||||||||||
DOI : | 10.1016/j.jqsrt.2015.11.008 | ||||||||||||
Page Range: | pp. 159-168 | ||||||||||||
Editors: |
| ||||||||||||
Publisher: | Elsevier | ||||||||||||
ISSN: | 0022-4073 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | Voigt line profile, speed-dependent Voigt line profile, radiative transfer, optical depth, systematic errors | ||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
HGF - Program: | Space | ||||||||||||
HGF - Program Themes: | Earth Observation | ||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||
DLR - Program: | R EO - Earth Observation | ||||||||||||
DLR - Research theme (Project): | R - Vorhaben Spektrometrische Verfahren und Konzepte der Fernerkundung (old) | ||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||
Institutes and Institutions: | Remote Sensing Technology Institute > Experimental Methods | ||||||||||||
Deposited By: | Birk, Manfred | ||||||||||||
Deposited On: | 24 Nov 2015 16:09 | ||||||||||||
Last Modified: | 06 Sep 2019 15:28 |
Repository Staff Only: item control page