Estimation of precipitable water vapour from GPS measurements in Argentina: Validation and qualitative analysis of results |
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| Authors: | LI Fernández P Salio MP Natali AM Meza |
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| Institution: | 1. Facultad de Ciencias Astronómicas y Geofísicas, UNLP, Paseo del Bosque s/n., B1900FWA, La Plata, Buenos Aires, Argentina;2. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina;3. Departamento de Ciencias de la Atmósfera y los Océanos, FCEN-UBA, 2do, Piso, Pabellón II, Ciudad Universitaria, C1428EHA, Ciudad de Buenos Aires, Argentina;4. Centro de Investigaciones del Mar y la Atmósfera, CONICET-UBA, Intendente Güiraldes 2160, Pabellón II, 2do, Piso, Ciudad Universitaria, C1428EGA, Ciudad de Buenos Aires, Argentina |
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| Abstract: | This paper presents PWV estimates from GPS data computed at four continuously operated GPS stations in Argentina established at Buenos Aires, Córdoba, Rosario and Salta over a 1 year period (2006–2007). The objective is to analyze the behaviour of the GPS PWV estimation using mean tropospheric temperature (Tm) values from the Bevis model, Sapucci model and obtained by a numerical integration of variables provided by the operational analysis of the National Centre of Environmental Prediction (NCEP). The results are validated using PWV values from nearest radio soundings. Moreover, a comparison between PWV values determined from microwave sensors deployed on the NOAA-18 satellite and PWV from GPS observations is also presented. |
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| Keywords: | Global Positioning System Precipitable water vapour Mean tropospheric temperature |
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