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Aerosol‐radiation interaction in the cloudless atmosphere during LACE 98 1. Measured and calculated broadband solar and spectral surface insolations

Identifieur interne : 001555 ( Main/Corpus ); précédent : 001554; suivant : 001556

Aerosol‐radiation interaction in the cloudless atmosphere during LACE 98 1. Measured and calculated broadband solar and spectral surface insolations

Auteurs : Manfred Wendisch ; Andreas Keil ; Dörthe Müller ; Ulla Wandinger ; Peter Wendling ; Armin Stifter ; Andreas Petzold ; Markus Fiebig ; Matthias Wiegner ; Volker Freudenthaler ; Wolfgang Armbruster ; Wolfgang Von Hoyningen Uene ; Ulrich Leiterer

Source :

RBID : ISTEX:E56D5E66F1B57EC4A80FBA5AD64DA2EE12767F47

Abstract

Vertical profile measurements of aerosol particle size distributions and of meteorological parameters (obtained from aircraft, radiosondes, and lidar) are used as input to a spectral radiative transfer model to calculate broadband solar and spectral surface insolations. The calculated values are compared to measured ones gathered with broadband solar pyranometers and pyrheliometers, and a fixed‐grating photodiode array spectroradiometer with 512 spectral channels between 500 and 920 nm wavelength. The measurements were obtained during the joint field campaign Lindenberg Aerosol Characterization Experiment (LACE) 98 near Berlin/Germany in the summer of 1998. Two cases (days with high and low aerosol loading, respectively) are investigated in detail. Furthermore, a measurement‐based sensitivity analysis was carried out focusing on the influence of particle composition (complex refractive index) and of microphysical and humidity growth uncertainties on the calculated surface insolations. Assuming a spectral refractive index of ammonium sulfate for the aerosol particles, on average the global component of the broadband solar surface insolations is 11–20 W m−2 (2–3%) greater than the measured values; the direct portion is 17–28 W m−2 (4–5%) higher, and its diffuse component is 6–7 W m−2 (4–10%) lower in comparison to the measurements. The measured and calculated spectral surface insolations (global portion) agree well in the central visible spectral region (500–600 nm wavelength). Toward larger wavelengths (near infrared) the calculated spectral surface insolations are increasingly higher than the measured ones.

Url:
DOI: 10.1029/2000JD000226

Links to Exploration step

ISTEX:E56D5E66F1B57EC4A80FBA5AD64DA2EE12767F47

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<namePart type="given">Wolfgang</namePart>
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<affiliation>Institute for Remote Sensing, University of Bremen, Bremen, Germany</affiliation>
<role>
<roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal">
<namePart type="given">Ulrich</namePart>
<namePart type="family">Leiterer</namePart>
<affiliation>Meteorological Observatory, German Weather Service, Lindenberg, Germany</affiliation>
<role>
<roleTerm type="text">author</roleTerm>
</role>
</name>
<typeOfResource>text</typeOfResource>
<genre type="article" displayLabel="article"></genre>
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<publisher>Blackwell Publishing Ltd</publisher>
<dateIssued encoding="w3cdtf">2002-11-16</dateIssued>
<dateCaptured encoding="w3cdtf">2000-12-06</dateCaptured>
<dateValid encoding="w3cdtf">2001-11-01</dateValid>
<edition>Wendisch, M., A. Keil, D. Mueller, U. Wandinger, P. Wendling, A. Stifter, A. Petzold, M. Fiebig, M. Wiegner, V. Freudenthaler, W. Armbruster, W. von Hoyningen‐Huene, and U. Leiterer, Aerosol‐radiation interaction in the cloudless atmosphere during LACE 98, 1. Measured and calculated broadband solar and spectral surface insolations, J. Geophys. Res., 107(D21), 8124, doi:10.1029/2000JD000226, 2002.</edition>
<copyrightDate encoding="w3cdtf">2002</copyrightDate>
</originInfo>
<language>
<languageTerm type="code" authority="rfc3066">en</languageTerm>
<languageTerm type="code" authority="iso639-2b">eng</languageTerm>
</language>
<physicalDescription>
<internetMediaType>text/html</internetMediaType>
<extent unit="figures">6</extent>
<extent unit="tables">4</extent>
</physicalDescription>
<abstract>Vertical profile measurements of aerosol particle size distributions and of meteorological parameters (obtained from aircraft, radiosondes, and lidar) are used as input to a spectral radiative transfer model to calculate broadband solar and spectral surface insolations. The calculated values are compared to measured ones gathered with broadband solar pyranometers and pyrheliometers, and a fixed‐grating photodiode array spectroradiometer with 512 spectral channels between 500 and 920 nm wavelength. The measurements were obtained during the joint field campaign Lindenberg Aerosol Characterization Experiment (LACE) 98 near Berlin/Germany in the summer of 1998. Two cases (days with high and low aerosol loading, respectively) are investigated in detail. Furthermore, a measurement‐based sensitivity analysis was carried out focusing on the influence of particle composition (complex refractive index) and of microphysical and humidity growth uncertainties on the calculated surface insolations. Assuming a spectral refractive index of ammonium sulfate for the aerosol particles, on average the global component of the broadband solar surface insolations is 11–20 W m−2 (2–3%) greater than the measured values; the direct portion is 17–28 W m−2 (4–5%) higher, and its diffuse component is 6–7 W m−2 (4–10%) lower in comparison to the measurements. The measured and calculated spectral surface insolations (global portion) agree well in the central visible spectral region (500–600 nm wavelength). Toward larger wavelengths (near infrared) the calculated spectral surface insolations are increasingly higher than the measured ones.</abstract>
<relatedItem type="host">
<titleInfo>
<title>Journal of Geophysical Research: Atmospheres</title>
</titleInfo>
<titleInfo type="abbreviated">
<title>J. Geophys. Res.</title>
</titleInfo>
<genre type="Journal">journal</genre>
<subject>
<genre>Index Terms</genre>
<topic authorityURI="http://psi.agu.org/specialSection/LACE1">Lindenberg Aerosol Characterization Experiments (LACE)</topic>
<topic authorityURI="http://psi.agu.org/subset/AAC">Aerosol and Clouds</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0300">ATMOSPHERIC COMPOSITION AND STRUCTURE</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0305">Aerosols and particles</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0345">Pollution: urban and regional</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0365">Troposphere: composition and chemistry</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0368">Troposphere: constituent transport and chemistry</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0345">Pollution: urban and regional</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0305">Aerosols and particles</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0400">BIOGEOSCIENCES</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0478">Pollution: urban, regional and global</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4200">OCEANOGRAPHY: GENERAL</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4251">Marine pollution</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4300">NATURAL HAZARDS</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4325">Megacities and urban environment</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4800">OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4801">Aerosols</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4900">PALEOCEANOGRAPHY</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4906">Aerosols</topic>
</subject>
<subject>
<genre>article category</genre>
<topic>Aerosol and Clouds</topic>
</subject>
<identifier type="ISSN">0148-0227</identifier>
<identifier type="eISSN">2156-2202</identifier>
<identifier type="DOI">10.1002/(ISSN)2156-2202d</identifier>
<identifier type="CODEN">JGREA2</identifier>
<identifier type="PublisherID">JGRD</identifier>
<part>
<date>2002</date>
<detail type="volume">
<caption>vol.</caption>
<number>107</number>
</detail>
<detail type="issue">
<caption>no.</caption>
<number>D21</number>
</detail>
<extent unit="pages">
<start>LAC 6-1</start>
<end>LAC 6-20</end>
<total>20</total>
</extent>
</part>
</relatedItem>
<identifier type="istex">E56D5E66F1B57EC4A80FBA5AD64DA2EE12767F47</identifier>
<identifier type="DOI">10.1029/2000JD000226</identifier>
<identifier type="ArticleID">2000JD000226</identifier>
<accessCondition type="use and reproduction" contentType="copyright">Copyright 2002 by the American Geophysical Union.</accessCondition>
<recordInfo>
<recordContentSource>WILEY</recordContentSource>
</recordInfo>
</mods>
</metadata>
<serie></serie>
</istex>
</record>

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