Funded by the Austrian Science Fund (FWF, ORD-68), we calculate and provide tropospheric delays and models as open access data. This server replaces, which will be shut down in March 2019. The portfolio of tropospheric delays and models provided here is significantly enhanced compared to the previous version. A manual on the usage and application of the troposphere products can be found in the readme.txt.

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



Research Division Higher Geodesy
Department of Geodesy and Geoinformation E120-4
Vienna University of Technology
Gusshausstrasse 27-29
A-1040 Vienna, Austria

Johannes Böhm
Phone: +43-1-58801-12864
Fax: +43-1-58801-912864
E-mail: johannes.boehm(at)

Daniel Landskron
Phone: +43-1-58801-12863