Abstract

A Global Navigational Satellite System (GNSS) tomography system is implemented in the Lisbon area, Portugal, to estimate the water vapor dynamics at a local scale. A field experiment was carried out, in which a series of temporary GNSS stations were installed, increasing the network from 9 permanent stations to a total of 17 GNSS stations. A radiosonde campaign was also performed with high sampling launches, at 4-h intervals, for 1 week. A time series of hourly 3D wet refractivity solutions were obtained during the radiosonde campaign. Radiosonde and Atmospheric Infrared Sounder (AIRS) measurements were used to compute wet refractivity profiles to initialize and update the tomography solutions. The dependence of the GNSS tomography solution on the initial conditions obtained from both radiosonde and AIRS measurements, and their updating frequencies are studied. It is found that the GNSS tomography continuous measurement of the atmospheric refractivity provides solutions with an RMS mean of about 2 g/m(3).

Autore Pugliese

• Nico Giovanni

Tutti gli autori

• Benevides P.; Nico G.; Catalao J.; Miranda P. M. A.

Titolo volume/Rivista

GPS solutions

Anno di pubblicazione

2018

ISSN

1080-5370

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

Non Disponibile

Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

Non Disponibile