A short note on the assimilation of collocated and concurrent GPS and ionosonde data into the Electron Density Assimilative Model

Angling, Matthew; Jackson-Booth, Natasha

doi:10.1029/2010rs004566

Cited by 28 publications

(22 citation statements)

References 16 publications

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“…A comprehensive specification of the ionosphere in terms of electron density, neutral particles-electrons collision frequency, and geomagnetic field is required in order to carry out an accurate ray-tracing. Therefore, when dealing with near real-time applications of ray-tracing, it is of crucial importance to have a realistic ionospheric modelling through 3-D models of ionospheric electron density, which after assimilating measured data calculate an updated 3-D image of the ionosphere (Angling and Khattatov, 2006;Thompson et al, 2006;Fridman et al, 2006Fridman et al, , 2009Decker and McNamara, 2007;McNamara et al, 2007McNamara et al, , 2008McNamara et al, , 2010McNamara et al, , 2011McNamara et al, , 2013Angling and Jackson-Booth, 2011;Shim et al, 2011). More recently, at the INGV, the IRI-SIRMUP-PROFILES (ISP) model, capable of providing a 3-D electron density profile representation of the ionosphere in quasi real time, was developed.…”

Section: Introductionmentioning

confidence: 99%

The IONORT-ISP-WC system: Inclusion of an electron collision frequency model for the D-layer

Settimi

Pietrella

Pezzopane

et al. 2015

Advances in Space Research

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Section: Introductionmentioning

confidence: 99%

The IONORT-ISP-WC system: Inclusion of an electron collision frequency model for the D-layer

Settimi

Pietrella

Pezzopane

et al. 2015

Advances in Space Research

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“…Previous studies (e.g. Angling and Jackson-Booth, 2011;Feltens et al, 2011) have shown that EDAM can accurately represent the ionosphere using GNSS data.…”

Section: The Electron Density Assimilative Model (Edam)mentioning

confidence: 99%

Modelling the main ionospheric trough using the Electron Density Assimilative Model (EDAM) with assimilated GPS TEC

et al. 2018

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Abstract. The main ionospheric trough is a large-scale spatial depletion in the electron density distribution at the interface between the high-and mid-latitude ionosphere. In western Europe it appears in early evening, progresses equatorward during the night, and retreats rapidly poleward at dawn. It exhibits substantial day-to-day variability and under conditions of increased geomagnetic activity it moves progressively to lower latitudes. Steep gradients on the trough-walls on either side of the trough minimum, and their variability, can cause problems for radio applications. Numerous studies have sought to characterize and quantify the trough behaviour.The Electron Density Assimilative Model (EDAM) models the ionosphere on a global scale. It assimilates observations into a background ionosphere, the International Reference Ionosphere 2007 (IRI2007), to provide a full 3-D representation of the ionospheric plasma distribution at specified times and days. This current investigation studied the capability of EDAM to model the ionosphere in the region of the main trough. Total electron content (TEC) measurements from 46 GPS stations in western Europe from September to December 2002 were assimilated into EDAM to provide a model of the ionosphere in the trough region. Vertical electron content profiles through the model revealed the trough and the detail of its structure. Statistical results are presented of the latitude of the trough minimum, TEC at the minimum and of other defined parameters that characterize the trough structure. The results are compared with previous observations made with the Navy Ionospheric Monitoring System (NIMS), and reveal the potential of EDAM to model the large-scale structure of the ionosphere.

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“…Additional electric field measurements provide an enhanced data base compared to former LEO satellites like CHAMP and Ørsted. Amm et al (2013) propose the application of the SECS method to solve for the ionospheric and field-aligned current systems. Derived electric currents and the electric field observations are then applied to solve Ohm's law for the electro-dayamics of the ionosphere resulting in maps of conductance and plasma convection along the location of the Swarm orbits.…”

Section: Swarm Data As a Tool For Novel Satellite-based Space Weathermentioning

confidence: 99%

Space Weather opportunities from the Swarm mission including near real time applications

et al. 2013

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Sophisticated space weather monitoring aims at nowcasting and predicting solar-terrestrial interactions because their effects on the ionosphere and upper atmosphere may seriously impact advanced technology. Operating alert infrastructures rely heavily on ground-based measurements and satellite observations of the solar and interplanetary conditions. New opportunities lie in the implementation of in-situ observations of the ionosphere and upper atmosphere onboard low Earth orbiting (LEO) satellites. The multi-satellite mission Swarm is equipped with several instruments which will observe electromagnetic and atmospheric parameters of the near Earth space environment. Taking advantage of the multi-disciplinary measurements and the mission constellation different Swarm products have been defined or demonstrate great potential for further development of novel space weather products. Examples are satellite based magnetic indices monitoring effects of the magnetospheric ring current or the polar electrojet, polar maps of ionospheric conductance and plasma convection, indicators of energy deposition like Poynting flux, or the prediction of post sunset equatorial plasma irregularities. Providing these products in timely manner will add significant value in monitoring present space weather and helping to predict the evolution of several magnetic and ionospheric events. Swarm will be a demonstrator mission for the valuable application of LEO satellite observations for space weather monitoring tools.

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A short note on the assimilation of collocated and concurrent GPS and ionosonde data into the Electron Density Assimilative Model

Cited by 28 publications

References 16 publications

The IONORT-ISP-WC system: Inclusion of an electron collision frequency model for the D-layer

The IONORT-ISP-WC system: Inclusion of an electron collision frequency model for the D-layer

Modelling the main ionospheric trough using the Electron Density Assimilative Model (EDAM) with assimilated GPS TEC

Space Weather opportunities from the Swarm mission including near real time applications

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