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  • 1. Barabash, Victoria
    A comparison of PMSE occurrence with energetic particle precipitation detected by riometer in northern Scandinavia2000In: Proceedings of the 9th International Workshop on Technical and Scientific Aspects of MST Radar- MST9 combined with COST-76 Final Profiler Workshop: Toulouse, France, March 13-18, 2000 / [ed] Belva Edwards, Toulouse: SCOSTEP , 2000Conference paper (Other academic)
  • 2. Barabash, Victoria
    Are variations in PMSE intensity affected by energetic particle precipitation?2002In: Annales Geophysicae, ISSN 0992-7689, E-ISSN 1432-0576, Vol. 20, 539-545 p.Article in journal (Refereed)
  • 3. Barabash, Victoria
    ESRAD MST radar analysis of the waves1998In: Proceedings of the 4th European Symposium on Stratospheric Ozone, Air Pollution Research Report 66, European Commision, 1998, 70-73 p.Conference paper (Other academic)
  • 4. Barabash, Victoria
    Leewave observations by the MST radar ESRAD in northen Sweden1999In: Mesoscale processes in the stratosphere: their effect on the stratospheric chemistry and microphysics ; proceedings of the European workshop 8 to 11 November 1998 Bad Tölz, Bavaria, Germany / [ed] K.S. Carslaw ; G.T. Amanatidis, Luxemourg: European Commission Joint Research Centre, 1999, 233-238 p.Conference paper (Other academic)
  • 5. Barabash, Victoria
    MST radar observations of PMSE in Northern Scandinavia during May-August 19971998In: Proceedings of the Eigth Workshop on Technical and Scientific Aspects of MST Radar : solar-terrestrial energy program: solar-terrestrial energy program ; Bangalore, India, December 15 - 20, 1997 / [ed] Belva Edwards, Boulder, Colo.: SCOSTEP , 1998, 326-329 p.Conference paper (Other academic)
  • 6. Barabash, Victoria
    MST-radar lee wave ovservations during winter 1996/97 in northern Scandinavia1997In: Proceedings of 13th ESA Symposium on Rocket and Baloon Programmes and Related Research, ESA-SP-397, 1997, 179-183 p.Conference paper (Other academic)
  • 7. Barabash, Victoria
    Wind profiling with ESRAD, the Esrange radar1997In: Extended abstracts COST-76 Profiler Workshop: v / [ed] Hans Richner, Zürich: Eidgenössische Technische Hochschule (ETH), Institute for Atmospheric Science , 1997, 70-73 p.Conference paper (Other academic)
  • 8. Barabash, Victoria
    et al.
    Chilson, P.
    Kirkwood, S.
    Réchou, A.
    Stebel, K.
    Investigations of the possible relationship between PMSE and tides using a VHF MST radar1998In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 25, no 17, 3297-3300 p.Article in journal (Refereed)
  • 9.
    Barabash, Victoria
    et al.
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    Ejemalm, Johnny
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    Kuhn, Thomas
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    Milz, Mathias
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    Molin, Sven
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
    Johansson, Jonny
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
    Westerberg, Lars-Göran
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
    Masters Programs in Space Science and Engineering in Northern Sweden2017Conference paper (Refereed)
  • 10. Barabash, Victoria
    et al.
    Kirkwood, S.
    Feofilov, A.
    Kutepov, A.
    Polar mesosphere summer echoes during the July 2000 solar proton event2004In: Annales Geophysicae, ISSN 0992-7689, E-ISSN 1432-0576, Vol. 22, no 3, 759-771 p.Article in journal (Refereed)
    Abstract [en]

    The influence of the solar proton event (SPE) 14-16 July 2000 on Polar Mesosphere Summer Echoes (PMSE) is examined. PMSE were observed by the Esrange VHF MST Radar (ESRAD) at 67°53'N, 21°06'E. The 30MHz Imaging Riometer for Ionospheric Studies IRIS in Kilpisjärvi (69°30'N, 20°47'E) registered cosmic radio noise absorption caused by ionisation changes in response to the energetic particle precipitation. An energy deposition/ion-chemical model was used to estimate the density of free electrons and ions in the upper atmosphere. Particle collision frequencies were calculated from the MSISE-90 model. Electric fields were calculated using conductivities from the model and measured magnetic disturbances. The electric field reached a maximum of 91mV/m during the most intensive period of the geomagnetic storm accompanying the SPE. The temperature increase due to Joule and particle heating was calculated, taking into account radiative cooling. The temperature increase at PMSE heights was found to be very small. The observed PMSE were rather intensive and extended over the 80-90km height interval. PMSE almost disappeared above 86km at the time of greatest Joule heating on 15 July 2000. Neither ionisation changes, nor Joule/particle heating can explain the PMSE reduction. Transport effects due to the strong electric field are a more likely explanation.

  • 11.
    Barabash, Victoria
    et al.
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    Osepian, A.
    Polar Geophysical Institute.
    Dalin, P.
    Swedish Institute of Space Physics / Institutet för rymdfysik.
    Kirkwood, S.
    Swedish Institute of Space Physics / Institutet för rymdfysik.
    Electron density profiles in the quiet lower ionosphere based on the results of modeling and experimental data2012In: Annales Geophysicae, ISSN 0992-7689, E-ISSN 1432-0576, Vol. 30, no 9, 1345-1360 p.Article in journal (Refereed)
    Abstract [en]

    The theoretical PGI (Polar Geophysical Institute) model for the quiet lower ionosphere has been applied for computing the ionization rate and electron density profiles in the summer and winter D-region at solar zenith angles less than 80° and larger than 99° under steady state conditions. In order to minimize possible errors in estimation of ionization rates provided by solar electromagnetic radiation and to obtain the most exact values of electron density, each wavelength range of the solar spectrum has been divided into several intervals and the relations between the solar radiation intensity at these wavelengths and the solar activity index F10.7 have been incorporated into the model. Influence of minor neutral species (NO, H2O, O, O3) concentrations on the electron number density at different altitudes of the sunlit quiet D-region has been examined. The results demonstrate that at altitudes above 70 km, the modeled electron density is most sensitive to variations of nitric oxide concentration. Changes of water vapor concentration in the whole altitude range of the mesosphere influence the electron density only in the narrow height interval 73-85 km. The effect of the change of atomic oxygen and ozone concentration is the least significant and takes place only below 70 km. Model responses to changes of the solar zenith angle, solar activity (low-high) and season (summer-winter) have been considered. Modeled electron density profiles have been evaluated by comparison with experimental profiles available from the rocket measurements for the same conditions. It is demonstrated that the theoretical model for the quiet lower ionosphere is quite effective in describing variations in ionization rate, electron number density and effective recombination coefficient as functions of solar zenith angle, solar activity and season. The model may be used for solving inverse tasks, in particular, for estimations of nitric oxide concentration in the mesosphere

  • 12.
    Barabash, Victoria
    et al.
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    Osepian, A.
    Polar Geophysical Institute.
    Dalin, P.
    Swedish Institute of Space Physics / Institutet för rymdfysik.
    Kirkwood, S.
    Swedish Institute of Space Physics / Institutet för rymdfysik.
    Electron density profiles in the quiet lower ionosphere based on the results of modeling and experimental data2012In: Annales Geophysicae, ISSN 0992-7689, E-ISSN 1432-0576, Vol. 30, no 9, 1345-1360 p.Article in journal (Refereed)
    Abstract [en]

    The theoretical PGI (Polar Geophysical Institute) model for the quiet lower ionosphere has been applied for computing the ionization rate and electron density profiles in the summer and winter D-region at solar zenith angles less than 80° and larger than 99° under steady state conditions. In order to minimize possible errors in estimation of ionization rates provided by solar electromagnetic radiation and to obtain the most exact values of electron density, each wavelength range of the solar spectrum has been divided into several intervals and the relations between the solar radiation intensity at these wavelengths and the solar activity index F10.7 have been incorporated into the model. Influence of minor neutral species (NO, H2O, O, O3) concentrations on the electron number density at different altitudes of the sunlit quiet D-region has been examined. The results demonstrate that at altitudes above 70 km, the modeled electron density is most sensitive to variations of nitric oxide concentration. Changes of water vapor concentration in the whole altitude range of the mesosphere influence the electron density only in the narrow height interval 73-85 km. The effect of the change of atomic oxygen and ozone concentration is the least significant and takes place only below 70 km.

    Model responses to changes of the solar zenith angle, solar activity (low-high) and season (summer-winter) have been considered. Modeled electron density profiles have been evaluated by comparison with experimental profiles available from the rocket measurements for the same conditions. It is demonstrated that the theoretical model for the quiet lower ionosphere is quite effective in describing variations in ionization rate, electron number density and effective recombination coefficient as functions of solar zenith angle, solar activity and season. The model may be used for solving inverse tasks, in particular, for estimations of nitric oxide concentration in the mesosphere

  • 13.
    Barabash, Victoria
    et al.
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    Osepian, Aleftina
    Polar Geophysical Institute, Murmansk.
    Dalin, Peter
    Swedish Institute of Space Physics / Institutet för rymdfysik.
    Influence of water vapour on the height distribution of positive ions, effective recombination coefficient and ionisation balance in the quiet lower ionosphere2014In: Annales Geophysicae, ISSN 0992-7689, E-ISSN 1432-0576, Vol. 32, 207-222 p.Article in journal (Refereed)
  • 14. Kirkwood, S.
    et al.
    Barabash, Victoria
    Belova, E.
    Nilsson, H.
    Rao, T.N.
    Stebel, K.
    Blum, U.
    Fricke, K-H.
    Osepian, A.
    Chilson, Phillip B.
    Polar mesosphere winter echoes by ESRAD, EISCAT and lidar2002Book (Other academic)
    Abstract [en]

    The ESRAD 52 MHz MST radar (67° 53 ‘ N, 21 ° 06 ‘ E) has observed thin layers of enhanced radar echoes in the winter mesosphere during several recent solar proton events. The detection of these polar mesosphere winter echoes (PMWE) is generally found to correlates well with low values of λ (the ratio of negative ion density to electron density). However PMWE are found to persist for values of λ up to ~100. Present knowledge of the nature of neutral turbulence in the winter mesosphere suggests that such turbulence cannot generate electron density fluctuations with scale-sizes as short as the 3 m needed to produce radar echoes at 52 MHz. This is particularly true as λ increases to ~100. Joint observations from ESRAD and the EISCAT 224 MHz radar suggest that PMWE is also detectable at 67 cm scale-sizes, further increasing the difficulty in explaining the echoes by neutral turbulence. Joint observations from ESRAD and lidar are also inconsistent with the expected behaviour of turbulence. Together with results concerning the thickness, echo aspect-sensitivity and echo spectral-width of the PMWE, these observation leads to the conclusion that the layers cannot be explained by turbulence alone. A role for charged aerosols in creating PMWE is proposed. The presence of aerosols is supported by the lidar observations.

  • 15. Kirkwood, S.
    et al.
    Barabash, Victoria
    Belova, E.
    Nilsson, H.
    Rao, T.N.
    Stebel, K.
    Osepian, A.
    Chilson, Phillip B.
    Polar mesosphere winter echoes during solar proton event2002In: Advances in Polar Upper Atmosphere Research, Vol. 16, 111-125 p.Article in journal (Refereed)
  • 16. Kirkwood, S.
    et al.
    Barabash, Victoria
    Brändström, B.U.E.
    Moström, A.
    Stebel, K.
    Mitchell, N.
    Hocking, W.
    Noctilucent clouds, PMSE and 5-day planetary waves: a case study2002In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 29, no 10, 1-4 p.Article in journal (Refereed)
  • 17. Kirkwood, S.
    et al.
    Barabash, Victoria
    Chilson, P.
    Réchou, A.
    Stebel, K.
    Espy, P.
    Witt, G.
    Stegman, J.
    The 1997 PMSE season - its relation to wind, temperature and water vapor1998In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 25, no 11, 1867-1870 p.Article in journal (Refereed)
  • 18. Réchou, A.
    et al.
    Barabash, Victoria
    Chilson, P.
    Kirkwood, S.
    Savitskaya, T.
    Stebel, K.
    Mountain wave motions determined by the Esrange MST radar1999In: Annales Geophysicae, ISSN 0992-7689, E-ISSN 1432-0576, Vol. 17, 957-970 p.Article in journal (Refereed)
  • 19.
    Schilling, Klaus
    et al.
    Julius-Maximilians Universität Würzburg, Informatik VII: Robotics & Telematics.
    Barabash, Victoria
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    SpaceMaster: An International, Interdisciplinary Master in Space Science and Technology2017Conference paper (Other academic)
    Abstract [en]

    The significant demand for aerospace engineers led 2005 to the foundation of the interdisciplinary program "SpaceMaster" by six European Universities. It was established in the European elite-program "Erasmus Mundus" to train talented young people in the challenging subject of space science and technology. The universities cooperate and contribute their special expertise to the courses in order to cover the broad interdisciplinary area of spacecraft design and space environment. In particular system design techniques are emphasized, which are of interest for a broad spectrum of industrial applications well beyond aerospace.

    The international dimension of this space education is reflected in the distribution of places for education: 1

    st semester in Würzburg (Germany), 2nd semester in Kiruna (Sweden), second year according to the desired specialization in one of the six partner European Universities. The successful students will receive double diploma from the two European Universities, where most credits were received. The student population is also very international: typically from about 600 applications 50 students are selected, half of them from Europe, the other half from outside Europe.

    The students are able to follow the more scientific tracks on space physics with an emphasis on instrumentation and astronomy, or atmospheric and planetary physics. The engineering tracks emphasize the design of spacecraft and mission realization. Here specifically the design of CanSats and educational CubeSats is used to complement the lectures by practical implementation aspects. For more than 10 years, the SpaceMaster-alumni encounter excellent career perspectives in industry, space agencies and research institutes.

    In this contribution the international university cooperation, the contents of the curriculum, as well as the specific challenges and acquired experiences in this international program are addressed.

  • 20. Stebel, K.
    et al.
    Barabash, Victoria
    Kirkwood, S.
    Siebert, J.
    Polar mesosphere summer echoes and noctilucent clouds: Simultaneous and common‐volume observations by radar, lidar and CCD camera2000In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 27, no 5, 661-664 p.Article in journal (Refereed)
  • 21.
    Weighton, David
    et al.
    Luleå tekniska universitet.
    Pellinen-Wannberg, Asta
    Umeå universitet.
    Barabash, Victoria
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
    Molin, Sven
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
    The development of masters programs in space science and technology in northern Scandinavia2008In: Proceedings of the 59th International Astronautical Congress: Glascow, Scotland, 29 Sept - 3 Oct 2008, 2008Conference paper (Other academic)
1 - 21 of 21
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