[unav_all] Availability of near real-time TEC monitoring system for South America
Luciano P. O. Mendoza
lmendoza at fcaglp.unlp.edu.ar
Wed Apr 10 17:48:36 UTC 2019
(apologies for cross-posting)
we would like to announce the immediate availability of a multi-GNSS,
multi-frequency and near real-time ionospheric TEC monitoring system for
South America. It employs GPS, GLONASS, Galileo and BeiDou observations,
in all available bands, and made extensive use of the IGS Real-Time
The regional TEC products are updated every 15 minutes and, besides
South America, also cover Central America, the Caribbean and the
Plots of the most recent TEC maps, with a typical latency of 10 minutes,
can be accessed anonymously from
or alternatively in Spanish from
In addition, human readable and binary versions of the maps, in IONEX
and NetCDF formats, can be immediately retrieved from
In this case, a one-time and simple registration process is required,
just writing us briefly stating the intended purpose and requesting for
an individual user (and password) to access the TEC product.
We would like to thank the people, organizations and agencies
responsible to collect, compute, maintain and openly provide the
observations, products and databases that made this work possible.
In particular, real-time GNSS orbit and clock messages, along with GNSS
observations, are provided by the Bundesamt für Kartographie und
Geodäsie (BKG, Germany), in support to the International GNSS Service
(IGS), and we particularly thank Peter Neumaier.
Real-time GNSS observations are also provided by: the Instituto
Brasileiro de Geografia e Estatística (IBGE, Brazil), and we
particularly thank Sonia Maria Alves Costa; by the Instituto Geográfico
Nacional (IGN, Argentina), and we particularly thank Diego Piñón; by the
National Aeronautics and Space Administration (NASA, USA), in support to
the IGS, and we particularly thank Jennifer Ash from the Crustal
Dynamics Data Information System (CDDIS) Team; by the Servicio
Geográfico Militar (SGM, Uruguay), and we particularly thank José María
Pampillón; also, this material is (partially) based on data services
provided by the UNAVCO Facility with support from the National Science
Foundation (NSF, USA) and NASA under NSF Cooperative Agreement No.
EAR-0735156 (UNAVCO, USA).
Details about these products can be found in two complementary articles:
* A multi-GNSS, multi-frequency and near real-time ionospheric TEC
monitoring system for South America, by Mendoza, L. P. O., Meza, A. M.
and Aragón Paz, J. M. (2019), in Space Weather, 17,
* Technical note on the multi-GNSS, multi-frequency and near real-time
ionospheric TEC monitoring system for South America, by Mendoza, L. P.
O., Meza, A. M. and Aragón Paz, J. M. (2019), in EarthArXiv,
Please, do not hesitate to contact us if you have further questions
about these products. All constructive feedback from other ACs,
colleagues and users are certainly welcomed!
Dr. Luciano P. O. Mendoza
Laboratorio de Meteorología espacial, Atmósfera terrestre, Geodesia,
Geodinámica, diseño de Instrumental y Astrometría (MAGGIA)
Facultad de Ciencias Astronómicas y Geofísicas (FCAG)
Universidad Nacional de La Plata (UNLP) y
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
Tel. +54 221 423 6593 int. 1057
Fax +54 221 423 6591
Paseo del Bosque s/n, B1900FWA
La Plata, Argentina.
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