Browsing Fysisk institutt by Author "Høeg, Per"

Now showing items 1-7 of 7

  • Climatology and modeling of ionospheric irregularities over Greenland based on empirical orthogonal function method 
    Jin, Yaqi; Clausen, Lasse; Miloch, Wojciech Jacek; Høeg, Per; Jarmołowski, Wojciech; Wielgosz, Pawel; Paziewski, Jacek; Milanowska, Beata; Hoque, Mainul; Berdermann, Jens; Lyu, Haixia; Hernández-Pajares, Manuel; García-Rigo, Alberto (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    This paper addresses the long-term climatology (over two solar cycles) of total electron content (TEC) irregularities from a polar cap station (Thule) using the rate of change of the TEC index (ROTI). The climatology reveals ...
  • Electron density fluctuations from Swarm as a proxy for ground-based scintillation data: A statistical perspective 
    Kotova, Daria; Jin, Yaqi; Spogli, Luca; Wood, Alan G.; Urbar, Jaroslav; Rawling, James T.; Whittaker, Ian C.; Alfonsi, Lucilla; Clausen, Lasse; Høeg, Per; Miloch, Wojciech Jacek (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    The Swarm satellite mission has been used for numerous studies of the ionosphere. Here we use a global product, based on electron density measurements from Swarm that characterises ionospheric variability. The IPIR ...
  • Multi-scale response of the high-latitude topside ionosphere to geospace forcing 
    Urbar, Jaroslav; Spogli, Luca; Cicone, Antonio; Clausen, Lasse; Jin, Yaqi; Wood, Alan G.; Alfonsi, Lucilla; Cesaroni, Claudio; Kotova, Daria; Høeg, Per; Miloch, Wojciech Jacek (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We investigate the response of the topside ionosphere, auroral and polar sectors, to the forcing of the geospace during September 2017. Specifically, we aim at characterizing such a response in terms of the involved spatial ...
  • Sea Surface Roughness Determination from Grazing Angle GPS Ocean Observations and Scatterometry Simulations 
    Høeg, Per; Carlström, Anders (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Measurements of grazing angle GNSS-R ocean reflections combined with meteorological troposphere data are used for retrieval of ocean wave heights and surface roughness parameters. The observational results are compared to ...
  • The implications of ionospheric disturbances for precise GNSS positioning in Greenland 
    Paziewski, Jacek; Høeg, Per; Sieradzki, Rafal; Jin, Yaqi; Jarmolowski, Wojciech; Hoque, M. Mainul; Berdermann, Jens; Hernandez-Pajares, Manuel; Wielgosz, Pawel; Lyu, Haixia; Miloch, Wojciech Jacek; Orús-Pérez, Raul (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Ionospheric irregularities impair Global Navigation Satellite System (GNSS) signals and, in turn, affect the performance of GNSS positioning. Such effects are especially evident at low and high latitudes, which are currently ...
  • Variability of Ionospheric Plasma: Results from the ESA Swarm Mission 
    Wood, Alan G.; Alfonsi, Lucilla; Clausen, Lasse; Jin, Yaqi; Spogli, Luca; Urbář, Jaroslav; Rawlings, James T.; Whittaker, Ian C.; Dorrian, Gareth D.; Høeg, Per; Kotova, Daria; Cesaroni, Claudio; Cicone, Antonio; Miedzik, Jan; Gierlach, Ewa; Kochańska, Paula; Wojtkiewicz, Pawel; Shahtahmassebi, Golnaz; Miloch, Wojciech Jacek (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract Swarm is the first European Space Agency (ESA) constellation mission for Earth Observation. Three identical Swarm satellites were launched into near-polar orbits on 22 November 2013. Each satellite hosts a range ...
  • Wave optics-based LEO-LEO radio occultation retrieval 
    Benzon, Hans-Henrik; Høeg, Per (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    This paper describes the theory for performing retrieval of radio occultations that use probing frequencies in the XK and KM band. Normally, radio occultations use frequencies in the L band, and GPS satellites are used as ...