Oumbe, Armel and Blanc, P. and Gschwind, B. and Lefevre, M. and Qu, Z. and Schroedter-Homscheidt, Marion and Wald, L. (2011) Solar irradiance in clear atmospheres: study of parameterisations of change with altitude. Advances in Science and Research, 6, pp. 199-203. Copernicus Publications. doi: 10.5194/asr-6-199-2011. ISSN 1992-0628.
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Abstract
Parameterisation of changes of the solar irradiance at ground level with a specific variable (e.g. solar zenithal angle, aerosol optical depth, altitude, etc.) is often used in operational processes because it saves computational time. This paper deals with the modelling of the vertical profile of downwelling solar irradiance for the first two kilometres above ground in clear sky conditions. Two analytical parameterisations are evaluated for direct and global irradiance in spectral bands as well as for the total irradiance. These parameterisations reproduce the vertical profile with good accuracy for global spectral irradiance and are less accurate for direct component, especially in turbid atmosphere. A piecewise linear interpolation technique using irradiance values known at surface and 4 altitudes every 500m performs better in any case.
Item URL in elib: | https://elib.dlr.de/74329/ | ||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||
Title: | Solar irradiance in clear atmospheres: study of parameterisations of change with altitude | ||||||||||||||||||||||||
Authors: |
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Date: | 2011 | ||||||||||||||||||||||||
Journal or Publication Title: | Advances in Science and Research | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||||||
Gold Open Access: | Yes | ||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||
Volume: | 6 | ||||||||||||||||||||||||
DOI : | 10.5194/asr-6-199-2011 | ||||||||||||||||||||||||
Page Range: | pp. 199-203 | ||||||||||||||||||||||||
Publisher: | Copernicus Publications | ||||||||||||||||||||||||
ISSN: | 1992-0628 | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | solar irradiance, clear-sky, altitude, parameterisation | ||||||||||||||||||||||||
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 - Atmospheric and climate research | ||||||||||||||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||||||||||||||
Institutes and Institutions: | German Remote Sensing Data Center > Atmosphere | ||||||||||||||||||||||||
Deposited By: | Schroedter-Homscheidt, Marion | ||||||||||||||||||||||||
Deposited On: | 24 Jan 2012 12:45 | ||||||||||||||||||||||||
Last Modified: | 22 Apr 2013 08:57 |
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