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Estimation of polar depletion regions by VTEC contrast and watershed enhancing
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Article
Open AccessThis article presents a method for determining near-Pole ionization depletion regions and troughs from global navigation satellite system (GNSS) vertical total electron content (VTEC) maps. To define the regions, we use ... -
Improvement of global ionospheric VTEC maps by using kriging interpolation technique
(2005-07-07)
Article
Open AccessIn this work, a geostatistic interpolation algorithm, called kriging, has been applied to improve the Technical University of Catalonia (UPC) global ionospheric maps (GIMs) computed with GPS data. This new UPC GIM, from ... -
Towards cooperative global mapping of the ionosphere: fusion feasibility for igs and iri with global climate vtec maps
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-11-01)
Article
Open AccessRecommendations of the International Reference Ionosphere (IRI) Workshop 2017 in Taoyuan City, Taiwan and International GNSS Service (IGS) Workshop 2018 in Wuhan, China included establishment of an ionosphere mapping service ... -
Assessment of global ionospheric maps performance by means of ionosonde data
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-21)
Article
Open AccessThis work presents a new method for assessing global ionospheric maps (GIM) using ionosonde data. The method is based on the critical frequency at the F2 layer directly measured by ionosondes to validate VTEC (vertical ... -
Comments on: confirming geomagnetic Sfe by means of a solar flare detector based on GNSS
(2020-01-01)
Article
Open AccessWe report two comments affecting the paper “Curto JJ, Juan JM & Timoté CC, 2019. Confirming geomagnetic Sfe by means of a solar flare detector based on GNSS. J Space Weather Space Clim 9: A42. https://doi.org/10.1051/sws ... -
Assessment of centre national d'Études spatiales real-time ionosphere maps in instantaneous precise real-time kinematic positioning over medium and long baselines
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-04-17)
Article
Open AccessPrecise real-time kinematic (RTK) Global Navigation Satellite System (GNSS) positioning requires fixing integer ambiguities after a short initialization time. Originally, it was assumed that it was only possible at a ... -
Assessment of the capabilities and applicability of ionospheric perturbation indices provided in Europe
(2020-08-01)
Article
Open AccessPerturbations in the ionosphere are of great interest not only for scientific research, but also for applications using transionospheric radiosignals (e.g. GNSS applications and HF communication), because the transmission ... -
Real-time detection, location, and measurement of geoeffective stellar flares from Global Navigation Satellite System Data: new technique and case studies
(2020-03-01)
Article
Open AccessAn alternative approach to detect solar flares and quantify the associated extreme ultraviolet (EUV) solar flux rate was introduced in this journal by the authors: Global Navigation Satellite Systems Solar FLAre Indicator ... -
Weak magnetic storms can modulate ionosphere-plasmasphere interaction significantly: mechanisms and manifestations at mid-latitudes
(2019-12-26)
Article
Open AccessA comprehensive study of the response of the ionosphere-plasmasphere system at mid-latitudes to weak (Dstmin > -50 nT) magnetic storms is presented. For the first time, it is shown that weak magnetic disturbances can lead ... -
Interpretation of the tropospheric gradients estimated with GPS during hurricane Harvey
(2019-01-01)
Article
Open AccessDuring the last decade Global Positioning System (GPS) Continuous Operating Reference Stations networks have become a new important data source for meteorology. This has dramatically improved the ability to remotely sense ... -
Electron density retrieval from truncated Radio Occultation GNSS data
(2019-06-01)
Article
Open AccessThis paper summarizes the definition and validation of two complementary new strategies, to invert incomplete Global Navigation Satellite System Radio-Occultation (RO) ionospheric measurements, such as the ones to be ... -
Critical issues in ionospheric data quality and implications for scientific studies
(2019-05)
Article
Open AccessIonospheric data are valuable records of the behavior of the ionosphere, solar activity, and the entire Sun-Earth system. The data are critical for both societally important services and scientific investigations of upper ...
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