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Ground-Based Measured and Calculated Spectra of Actinic Flux Density and Downward UV Irradiance in Cloudless Conditions and their Sensitivity to Aerosol Microphysical Properties

Früh, Barbara and Eckstein, Eva and Trautmann, Thomas and Wendisch, Manfred and Fiebig, Markus and Feister, Uwe (2003) Ground-Based Measured and Calculated Spectra of Actinic Flux Density and Downward UV Irradiance in Cloudless Conditions and their Sensitivity to Aerosol Microphysical Properties. Journal of Geophysical Research, 108 (D16), AAC2-1-AAC2-16. DOI: 10.1029/2002JD002933

Full text not available from this repository.

Official URL: http://www.agu.org/journals/jd/jd0316/2002JD002933/2002JD002933.pdf

Abstract

Ground-based spectral measurements of actinic flux density (300–660 nm wavelength) and downward UV irradiance (300–324 nm) under cloudless conditions have been compared with the results of one-dimensional radiative transfer calculations employing concurrent airborne vertical profile measurements of aerosol particle size distributions. Good agreement (within ±10%) between measured and calculated spectra was found. The remaining differences were explained by uncertainties inherent in the aerosol particle microphysical input data and the column ozone content. A respective sensitivity analysis of the calculated spectra, which was based on the observed variability of microphysical properties, has shown that the particle number concentration is the most crucial input uncertainty for both the actinic flux density and the UV irradiance. For the wavelength range investigated, the uncertainty of the column ozone content is of minor importance for both spectral quantities.

Item URL in elib:https://elib.dlr.de/10003/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=2003,
Title:Ground-Based Measured and Calculated Spectra of Actinic Flux Density and Downward UV Irradiance in Cloudless Conditions and their Sensitivity to Aerosol Microphysical Properties
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Früh, BarbaraInst. f. Physik der Atmosphäre, Johannes Gutenberg-Univ. Mainz, MainzUNSPECIFIED
Eckstein, EvaMPI f. Chemie, MainzUNSPECIFIED
Trautmann, ThomasMet. Inst. , Univ. LeipzigUNSPECIFIED
Wendisch, ManfredInst. f. Troposphärenforschung, LeipzigUNSPECIFIED
Fiebig, MarkusUNSPECIFIEDUNSPECIFIED
Feister, UweMet. Observatorium, DWD, PotsdamUNSPECIFIED
Date:2003
Journal or Publication Title:Journal of Geophysical Research
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:108
DOI :10.1029/2002JD002933
Page Range:AAC2-1-AAC2-16
Status:Published
Keywords:actinic flux, UV irradiance, aerosol radiative forcing, radiative transfer simulations, aerosols and particles, transmission and scattering of radiation
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Atmosphären- und Klimaforschung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics
Deposited By: Löb, Ute
Deposited On:21 Feb 2006
Last Modified:14 Jan 2010 14:48

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