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Multi-instrument comparisons of D-region plasma measurements

Friedrich, M. and Torkar, K. M. and Hoppe, U.-P. and Bekkeng, T.-A. and Barjatya, A. and Rapp, M. (2013) Multi-instrument comparisons of D-region plasma measurements. Annales Geophysicae, 31, pp. 135-144. Copernicus Publications. DOI: 10.5194/angeo-31-135-2013 ISSN 0992-7689

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Official URL: http://www.ann-geophys.net/31/135/2013/angeo-31-135-2013.pdf

Abstract

The ECOMA (Existence and Charge state Of Meteoric dust grains in the middle Atmosphere) series of sounding rocket flights consisted of nine flights with almost identical payload design and flight characteristics. All flights carried a radio wave propagation experiment together with a variety of plasma probes. Three of these measured electron densities, two ion densities. The rockets were all launched from the Andøya Rocket Range, Norway, in four campaigns between 2006 and 2010. Emphasis is on the final three flights from 2010 where the payloads were equipped with four instruments capable of measuring plasma densities in situ, among them a novel probe flown for the first time in conjunction with a wave propagation experiment. Deviation factors of all probe data relative to the wave propagation results were derived and revealed that none of the probe data were close to the wave propagation results at all heights, but – more importantly – the instruments showed very different behaviour at different altitudes. The novel multi-needle Langmuir probe exhibits the best correlation to the wave propagation data, as there is minimal influence of the payload potential, but it is still subject to aerodynamics, especially at its location at the rear of the payload. For all other probe types, the deviation factor comes closer to unity with increasing plasma density. No systematic difference of the empirical deviation factor between day and night can be found. The large negative payload potential in the last three flights may be the cause for discrepancies between electron and ion probe data below 85 km.

Item URL in elib:https://elib.dlr.de/81626/
Document Type:Article
Title:Multi-instrument comparisons of D-region plasma measurements
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Friedrich, M.Graz Univ. of Technology, Graz, AUNSPECIFIED
Torkar, K. M. Space Research Institute, Graz, AUNSPECIFIED
Hoppe, U.-P. Univ. of Oslo, Oslo, NUNSPECIFIED
Bekkeng, T.-A. Univ. of Oslo, Oslo, NUNSPECIFIED
Barjatya, A.Embry-Riddle Aeronautical Univ., Daytona Beach, FL, USAUNSPECIFIED
Rapp, M.DLRUNSPECIFIED
Date:2013
Journal or Publication Title:Annales Geophysicae
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:31
DOI :10.5194/angeo-31-135-2013
Page Range:pp. 135-144
Publisher:Copernicus Publications
ISSN:0992-7689
Status:Published
Keywords:Ionosphere; Auroral ionosphere
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics
Deposited By: Freund, Jana
Deposited On:13 Mar 2013 11:29
Last Modified:08 Mar 2018 18:47

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