Blar i NTNU Open på forfatter "Espy, Patrick Joseph"

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    • Using Background OH Airglow from astronomical Observations for atmospheric Research: A Proof of Concept 

      Franzen, Christoph (Master thesis, 2015)
      The physics of the hydroxyl (OH) layer located in the Mesosphere and Lower Thermosphere (MLT) has become a focus of interest, as more and more climate models extend into this region. This is shown by the IPCC's last two ...

    • Validation of SSUSI-derived auroral electron densities: comparisons to EISCAT data 

      Bender, Stefan; Espy, Patrick Joseph; Paxton, Larry J. (Peer reviewed; Journal article, 2021)
      The coupling of the atmosphere to the space environment has become recognized as an important driver of atmospheric chemistry and dynamics. In order to quantify the effects of particle precipitation on the atmosphere, ...

    • Variability of the Quasi Two-Day Wave in the Mesosphere 

      Mongstad, Eirik (Master thesis, 2013)
      The Quasi-Two-Day-Wave (QTDW) is examined through analysis of data given by the SKiYMET-radar at Dragvoll, Trondheim (63◦N,10◦E). Through spectral analysis the occurrence and generation mechanisms of the different wave ...

    • Velocity error induced by unevenly sampling wind radars 

      Ekern, Kjetil Landgraff (Master thesis, 2014)
      Measurements of atmospheric winds in the mesosphere and lower thermosphere (MLT)region using a SKiYMET radar started in Trondheim (63.4 N, 10.4 E) in September2012. This meteor radar utilizes the ionized trail from meteors ...

    • What causes the mid-winter cooling? 

      Fritsch, Frauke Ruth Lotte (Master thesis, 2016)
      This thesis investigated the influence and conditions of vertical propagation of planetary waves on the mid-winter cooling in the southern hemispheric polar meso- sphere. MERRA zonal wind data was used to extract planetary ...