Near-real-time VTEC maps: new contribution for Latin America Space Weather

The development of regional services able to provide ionospheric vertical total electron content (VTEC) maps and ionospheric indexes with a high spatial resolution, and in near-real-time, are of great importance for both civilian applications and the research community. We provide here the methodolo...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Mendoza, Luciano Pedro Oscar, Meza, Amalia Margarita, Aragón Paz, Juan Manuel
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2020
Materias:
Geofísica
GNSS derived VTEC maps
ionospheric index
monitoring the geomagnetic activity
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/105123
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-105123
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geofísica
GNSS derived VTEC maps
ionospheric index
monitoring the geomagnetic activity
spellingShingle Geofísica
GNSS derived VTEC maps
ionospheric index
monitoring the geomagnetic activity
Mendoza, Luciano Pedro Oscar
Meza, Amalia Margarita
Aragón Paz, Juan Manuel
Near-real-time VTEC maps: new contribution for Latin America Space Weather
topic_facet Geofísica
GNSS derived VTEC maps
ionospheric index
monitoring the geomagnetic activity
description The development of regional services able to provide ionospheric vertical total electron content (VTEC) maps and ionospheric indexes with a high spatial resolution, and in near-real-time, are of great importance for both civilian applications and the research community. We provide here the methodologies, and an assessment, of such a system. It relies on the public Global Navigational Satellite Systems (GNSS) infrastructure in South America, incorporates data from multiple constellations (currently GPS, GLONASS, Galileo and BeiDou), employs multiple frequencies, and produces continental wide VTEC maps with a latency of just a few minutes. To assess the ability of our system to model the ionospheric behavior we performed a yearround intercomparison between our near-real-time regional VTEC maps, and VTEC maps of veri ed quality produced by several referent analysis centers, resulting in mean biases lower than 1 TEC units (TECU). Also, the evaluation of our products against direct and independent GNSS-based slant TEC measurements shows RMS values better than 1 TECU. In turn, ionospheric weather W-index maps were generated, for calm and disturbed geomagnetic scenarios, solely employing our quality veri ed VTEC maps. The spatial representation of these W-index maps re ects the state of the ionosphere, with a resolution of 0:5 0:5 degrees. Finally, we conclude that our products, computed every 15 minutes, do provide an excellent spatial representation of the regional TEC, and are able to provide the bases for the possible computation of ionospheric W-index maps, also in near-real-time.
format Articulo
Preprint
author Mendoza, Luciano Pedro Oscar
Meza, Amalia Margarita
Aragón Paz, Juan Manuel
author_facet Mendoza, Luciano Pedro Oscar
Meza, Amalia Margarita
Aragón Paz, Juan Manuel
author_sort Mendoza, Luciano Pedro Oscar
title Near-real-time VTEC maps: new contribution for Latin America Space Weather
title_short Near-real-time VTEC maps: new contribution for Latin America Space Weather
title_full Near-real-time VTEC maps: new contribution for Latin America Space Weather
title_fullStr Near-real-time VTEC maps: new contribution for Latin America Space Weather
title_full_unstemmed Near-real-time VTEC maps: new contribution for Latin America Space Weather
title_sort near-real-time vtec maps: new contribution for latin america space weather
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/105123
work_keys_str_mv AT mendozalucianopedrooscar nearrealtimevtecmapsnewcontributionforlatinamericaspaceweather
AT mezaamaliamargarita nearrealtimevtecmapsnewcontributionforlatinamericaspaceweather
AT aragonpazjuanmanuel nearrealtimevtecmapsnewcontributionforlatinamericaspaceweather
bdutipo_str Repositorios
_version_ 1764820442893254659

Ejemplares similares