Precipitable Water Vapour and Zenith Total Delay time series and models over Slovakia and vicinity

Miroslava IGONDOVÁ; Dušan CIBULKA

doi:10.2478/v10126-010-0012-6

Miroslava IGONDOVÁ Department of Theoretical Geodesy, Faculty of Civil Engineering, Slovak University of Technology
Dušan CIBULKA Department of Theoretical Geodesy, Faculty of Civil Engineering, Slovak University of Technology

DOI: https://doi.org/10.2478/v10126-010-0012-6

Keywords: Zenith Total Delay (ZTD), Precipitable Water Vapour (PWV ), model of PWV and nPWV , automated processing, world wide web

Abstract

More than 50 permanent GNSS (Global Navigation Satellite Systems) stations
are processed continually within the Central European Permanent Network. Zenith
Total Delay (ZTD), one of the processing outputs, reflects a delay of the GNSS signal
caused by troposphere. Precipitable Water Vapour (PWV ) is calculated when ground
meteorological observations are available. Model of PWV over Slovakia and its vicinity is
produced using digital elevation model data for height correction. Real variation of PWV
over the area shows a model of normalized PWV (nPWV ), which is created from PWV
values reduced by theoretical PWV values corresponding to altitude and latitude of the
station. Time series of ZTD and PWV since 1996 and models of PWV and nPWV are
published on the web page, using Web Map Service and other web technologies. Data are
continually updated and can be downloaded for free.

Author Biography

Miroslava IGONDOVÁ, Department of Theoretical Geodesy, Faculty of Civil Engineering, Slovak University of Technology

Radlinského 11, 813 68 Bratislava, Slovak Republic