elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

Light Scattering Properties of Higher Order Chebyshev Particles and Implications for Aerosols with a Weak Surface Roughness

Schmidt, Karsten und Rother, Tom und Wauer, Jochen (2007) Light Scattering Properties of Higher Order Chebyshev Particles and Implications for Aerosols with a Weak Surface Roughness. ACCENT-TROPOSAT-2 Workshop 2007, 2007-06-21 bis 2007-06-22, Bremen.

[img]
Vorschau
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
901kB

Kurzfassung

Chebyshev particles of comparatively low orders n are used in the past to study the effects of nonspherical but concave geometries in remote sensing applications. Their shape is given by r(theta) = r0 * [1 + a * cos(n * theta)] where r0 is the radius of the underlying sphere and a denotes the deformation parameter. We present results of light scattering computations for several Chebyshev particles characterized by higher orders n. Accurate results can be obtained for such particles within a T matrix approach. Moreover the scattering characteristics converge to stable results if the order is increased. Essential differences between, e.g., the phase functions of the higher order Chebyshev particles and the underlying regular scatterers can be observed. In particular an increased backscattering due to the surface roughness is obtained. This behavior is even more pronounced in the case of highly absorbing particles. The effects obtained agree with results of other approaches and correspond to expectations for particles with a weak surface roughness. This demonstrates that, on one hand, higher order Chebyshev particles can be used to estimate the influence of a weak surface roughness on the light scattering behavior of atmospheric aerosols. On the other hand, the consideration of roughness effects is important in the retrieval of aerosol properties.

Dokumentart:Konferenzbeitrag (Poster)
Titel:Light Scattering Properties of Higher Order Chebyshev Particles and Implications for Aerosols with a Weak Surface Roughness
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Schmidt, KarstenNICHT SPEZIFIZIERT
Rother, TomNICHT SPEZIFIZIERT
Wauer, JochenNICHT SPEZIFIZIERT
Datum:21 Juni 2007
Referierte Publikation:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Light Scattering, Chebyshev Particles, Aerosols, Surface Roughness
Veranstaltungstitel:ACCENT-TROPOSAT-2 Workshop 2007
Veranstaltungsort:Bremen
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2007-06-21 bis 2007-06-22
Veranstalter :Universität Bremen
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Atmosphären- und Klimaforschung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung > Atmosphärenprozessoren
Hinterlegt von: Dr. Karsten Schmidt
Hinterlegt am:09 Jan 2008
Letzte Änderung:12 Dez 2013 20:28

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.