Funded by the Austrian Science Fund (FWF, ORD-68), we calculate tropospheric products and provide them as open access data. The portfolio of tropospheric products comprises delay models for several space geodetic techniques, direct ray-traced delays for VLBI observations, atmospheric pressure loading data, as well as many auxiliary tools.
A manual on the usage and application of the troposphere products can be found in the readme.txt.

Cite as: VMF Data Server; editing status 2019-01-15; - Registry of Research Data Repositories.

Troposphere delay model data

Atmospheric pressure loading (APL) data

Ray-tracing data


Structure of the troposphere delay models

The following two organigrams give an overview of the structure of the troposphere products.

structure_trop_products_discrete structure_trop_products_empirical

VMF3 data at Wettzell (Germany)

This plot shows a comparison of VMF3 operational data (VMF3OP, blue) with VMF3 forecast data (VMF3FC, red) for the Geodetic Observatory Wettzell in Germany over the last 4 weeks. The red line is always two days ahead of the blue line, since VMF3OP is always published for the previous day and VMF3FC for the upcoming day.

automatic_VMF3_zhd automatic_VMF3_zwd
automatic_VMF3_mfh automatic_VMF3_mfw



Johannes Böhm1, Janina Boisits2

1Research Division Higher Geodesy
 Department of Geodesy and Geoinformation    
 TU Wien
 Wiedner Hauptstra├če 8
 A-1040 Vienna, Austria
2Abteilung Grundlagen
 Bundesamt für Eich- und Vermessungswesen
 Schiffamtsgasse 1-3
 A-1020 Wien, Austria