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Meteor smoke influences on the D-region charge balance - review of recent in situ measurements and one dimensional model results

Baumann, Carsten und Rapp, Markus und Kero, A. und Ennell, C.-F. (2013) Meteor smoke influences on the D-region charge balance - review of recent in situ measurements and one dimensional model results. Annales Geophysicae, 31, Seiten 2049-2062. Copernicus Publications. doi: 10.5194/angeo-31-2049-2013. ISSN 0992-7689.

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Offizielle URL: http://www.ann-geophys.net/31/2049/2013/angeo-31-2049-2013.pdf

Kurzfassung

This work investigates the influence of meteoric smoke particles (MSP) on the charge balance in the D-region ionosphere. Both experimental in situ measurements and a one-dimensional ionospheric model reveal a clear impact of MSP on the ionospheric composition of the D-region. The study reviews rocket-borne in situ measurements of electron and positive ion density, which show a distinct deficit of electrons in comparison to positive ions between 80 and 95 km. This deficit can be explained by the ambient negatively chargedMSP measured simultaneously with a Faraday cup. The influence of MSP on the D-region charge balance is addressed with a simplified ionospheric model with only six components, i.e. electrons, positive and negative ions and neutral and charged MSP (both signs). The scheme includes reactions of plasma captured by MSP and MSP photo reactions as well as the standard ionospheric processes, e.g. ionion recombination. The model shows that the capture of plasma constituents by MSP is an important process leading to scavenging of electrons. Since Faraday cup measurements are biased towards heavy MSP because of aerodynamical filtering, we have applied an estimate of this filter on the modelled MSP densities. By doing that, we find good qualitative agreement between the experimental data and our model results. In addition, the model study reveals an increase of positive ions in the presence of MSP. That is primarily caused by the reduced dissociative recombination with electrons which have been removed from the gas phase by the MSP.

elib-URL des Eintrags:https://elib.dlr.de/85372/
Dokumentart:Zeitschriftenbeitrag
Titel:Meteor smoke influences on the D-region charge balance - review of recent in situ measurements and one dimensional model results
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Baumann, CarstenDLR, IPAhttps://orcid.org/0000-0001-7104-5992NICHT SPEZIFIZIERT
Rapp, MarkusDLR, IPANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Kero, A.Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, FinlandNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Ennell, C.-F.Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, FinlandNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2013
Erschienen in:Annales Geophysicae
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:31
DOI:10.5194/angeo-31-2049-2013
Seitenbereich:Seiten 2049-2062
Verlag:Copernicus Publications
ISSN:0992-7689
Status:veröffentlicht
Stichwörter:Atmospheric composition and structure, aerosols and particles, middle atmosphere
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Atmosphären- und Klimaforschung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre
Institut für Physik der Atmosphäre > Atmosphärische Spurenstoffe
Hinterlegt von: Ziegele, Brigitte
Hinterlegt am:19 Nov 2013 12:44
Letzte Änderung:14 Nov 2023 13:22

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