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Sporadic E layer studies

Sporadic E layer studies. Christina Arras et al. GFZ German Research Centre for Geosciences, Potsdam Department 1: Geodesy and Remote Sensing Section 1.1: GPS/Galileo Earth Observation. SWARM SPP workshop, Potsdam, 3-4 July 2014. Global Es distribution.

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Sporadic E layer studies

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  1. Sporadic E layerstudies Christina Arras et al. GFZ German Research Centre for Geosciences, Potsdam Department 1: Geodesy and Remote Sensing Section 1.1: GPS/Galileo Earth Observation SWARM SPP workshop, Potsdam, 3-4 July 2014

  2. Global Es distribution SWARM SPP workshop, Potsdam, 3-4 July 2014

  3. EsandEarth‘smagneticfield+ionosphere North polar regionEs occurrence 18:00 – 0:00 LT Es occurrence in 2010 • Remainingquestions: • Whyreduced Es rates in regionof South AtlanticAnomaly? • Dependence on geomagnetic/solar activity in polar regions? • Connection toionosphericphenomenalike TIDs, equ. Plasma depletions, etc. SWARM SPP workshop, Potsdam, 3-4 July 2014

  4. Couplingbetween Es and MLT dynamics Equatorialregion Northern midlatitudes Influencedbysemidiurnaltide: twomaximaandminima per day Influencedbydiurnaltide: onemaximumandminimum per day Can we also find otherperiodicitieslikeplanetarywaves? SWARM SPP workshop, Potsdam, 3-4 July 2014

  5. Sporadic E layer time series • Variations: • Intensity • Duration • Extension (North-/ Southward) • causes??? SWARM SPP workshop, Potsdam, 3-4 July 2014

  6. Project ideas • Investigation ofcouplingprocessesbetween neutral atmosphereandionosphere • Is Es connectedtoTIDs orequatorialplasmadepletions, etc.?(SWARM magnetometerandelectrondensitydata) • Couplingwithgravitywaves, planetarywaves,…? • Which additional parameterscontrolinterannualvariability? • Developementof an algorithmtoestimate Es intensities SWARM SPP workshop, Potsdam, 3-4 July 2014

  7. Couplingbetween Es andwavesfrombelow Es occurrencein 40-60°S southern summer (Jan, Feb, Mar) 2007-2012 sporadic E activityandincreased Es altitudesnearAndesmountains: GRAVITY WAVES??? SWARM SPP workshop, Potsdam, 3-4 July 2014

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