VMF Data Server

Vienna Mapping Functions Open Access Data

The VMF Data Server provides a portfolio of tropospheric products and forms a source of consistent troposphere delays models for all space geodetic techniques. The products include mapping functions, such as the widely used VMF1, but also ray-traced delays for VLBI observations as well as corrections for atmospheric pressure loading.
Please view our Products page for further details.

We would like to express our gratitude to the Austrian Science Fund (FWF), who funded the project to set up this data server (ORD-68), as well as to the European Centre for Medium-Range Weather Forecasts (ECMWF) for providing Numerical Weather Model (NWM) products.

Please read our Terms of Use.

Cite as: re3data.org: VMF Data Server; editing status 2020-12-14; re3data.org - Registry of Research Data Repositories. http://doi.org/10.17616/R3RD2H

Publications

VMF1:
Böhm et al. (2006) Troposphere mapping functions for GPS and very long baseline interferometry from European Centre for Medium‐Range Weather Forecasts operational analysis data. DOI:10.1029/2005JB003629
VMF1 Forecast:
Böhm et al. (2009) Forecast Vienna Mapping Functions 1 for real-time analysis of space geodetic observations. DOI:10.1007/s00190-008-0216-y
LHG:
Böhm & Schuh (2007) Troposphere gradients from the ECMWF in VLBI analysis. DOI:10.1007/s00190-007-0144-2
VMF3 & GPT3:
Landskron & Böhm (2018) VMF3/GPT3: refined discrete and empirical troposphere mapping functions. DOI:10.1007/s00190-017-1066-2
GRAD:
Landskron & Böhm (2018) Refined discrete and empirical horizontal gradients in VLBI analysis. DOI:10.1007/s00190-018-1127-1
VMF3o:
Boisits et al. (2020) VMF3o: the Vienna Mapping Functions for optical frequencies. DOI:10.1007/s00190-020-01385-5
GMF:
Böhm et al. (2006) Global Mapping Function (GMF): A new empirical mapping function based on numerical weather model data. DOI:10.1029/2005GL025546
GPT:
Böhm et al. (2007) A Global Model of Pressure and Temperature for Geodetic Applications. DOI:10.1007/s00190-007-0135-3
GPT2:
Lagler et al. (2013) GPT2: Empirical slant delay model for radio space geodetic techniques. DOI:10.1002/grl.50288
GPT2w:
Böhm et al. (2015) Development of an improved empirical model for slant delays in the troposphere (GPT2w). DOI:10.1007/s10291-014-0403-7
Site-augmented Mode:
Landskron et al. (2016) Site-Augmentation of Empirical Tropospheric Delay Models in GNSS. TU Wien Publication Database
RADIATE:
Hofmeister & Böhm (2017) Application of ray-traced tropospheric slant delays to geodetic VLBI analysis. DOI:10.1007/s00190-017-1000-7
Ray-tracing Comparison Campaign (2012):
Nafisi et al. (2012) Comparison of Ray-Tracing Packages for Troposphere Delays. DOI:10.1109/TGRS.2011.2160952
APL:
Wijaya et al. (2013) Atmospheric Pressure Loading. DOI:10.1007/978-3-642-36932-2_4

Latest Data at Wettzell (Germany)

The charts below illustrate the comparison of two different versions of VMF3 parameters at the Geodetic Observatory Wettzell in Germany over the last four weeks.
VMF3 parameters derived from operational Numerical Weather Models are depicted in blue (VMF3_OP), those derived from forecast Numerical Weather Models are depicted in red (VMF_FC). The top left chart refers to the zenith hydrostatic delay (zhd), the top right to the zenith wet delay (zwd), the bottom left chart refers to the hydrostatic mapping factor (mfh), and the bottom right to the wet mapping factor (mfw). Both mapping factors are calculated for an elevation angle of 5 degrees.

Partners

Contact

vmf@tuwien.ac.at

Johannes Böhm
Research Division Higher Geodesy
Department of Geodesy and Geoinformation
TU Wien
Wiedner Hauptstraße 8, 1040 Vienna, Austria

Janina Boisits
Satellite Positioning with GNSS and APOS
Department for Control Survey
Federal Office of Metrology and Surveying
Schiffamtsgasse 1-3, 1020 Vienna, Austria

Data Access

Troposphere Delay Models

Auxiliary Source Code

Station Coordinate Files

Ray-tracing

Atmospheric Pressure Loading

Publications

Latest Data at Wettzell (Germany)