BECAS
CAMISAY maria Fernanda
artículos
Título:
Tropospheric products from high-level GNSS processing in Latin America
Autor/es:
M.V. MACKERN; M.L. MATEO; M. F. CAMISAY; P.V.MORICHETTI
Revista:
International Association of Geodesy Symposia
Editorial:
Springer
Referencias:
Año: 2020
ISSN:
0939-9585
Resumen:
The present geodetic reference frame in Latin America and the Caribbean is given by anetwork of about 400 continuously operating GNSS stations. These stations areroutinely processed by ten Analysis Centres following the guidelines and standards setup by the International Earth Rotation and Reference Systems Service (IERS) andInternational GNSS Service (IGS). The Analysis Centres estimate daily and weeklystation positions and station zenith tropospheric path delays (ZTD) with an hourlysampling rate. This contribution presents some attempts aiming at combining theindividual ZTD estimations to generate consistent troposphere solutions over the entireregion and to provide reliable time series of troposphere parameters, which may beused in meteorological applications like numerical weather prediction andnowcasting/forecasting. The study covers ZTD and IWV series from a period a timespanof 5 years (2014-2018). In addition to the combination of the individual solutions,some advances based on the precise point positioning technique using BNC software(BKG NTRIP Client) and Bernese GNSS Software V.5.2 are presented. Results arevalidated using the IGS ZTD products and IWV radiosonde data. The agreement wasevaluated in terms of mean bias and RMS of the ZTD and IWV differences