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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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doi:10.5194/amt-2016-369
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
23 Nov 2016
Review status
A revision of this discussion paper was accepted for the journal Atmospheric Measurement Techniques (AMT) and is expected to appear here in due course.
EPN Repro2: A reference GNSS tropospheric dataset over Europe
Rosa Pacione1, Andrzej Araszkiewicz2, Elmar Brockmann3, and Jan Dousa4 1e-GEOS S.p.A, ASI/CGS, Italy
2Military University of Technology, Poland
3Swiss Federal Office of topography swisstopo
4New Technologies for the Information Society, Geodetic Observatory Pecný, RIGTC, Czech Republic
Abstract. The present availability of 18+ years of GNSS data belonging to the EUREF Permanent Network (EPN, http://www.epncb.oma.be/) is a valuable database for the development of a climate data record of GNSS tropospheric products over Europe. This data record can be used as a reference for a variety of scientific applications and has a high potential for monitoring trend and variability in atmospheric water vapour, improving the knowledge of climatic trends of atmospheric water vapour and being useful for regional Numerical Weather Prediction (NWP) reanalyses as well as climate model simulations. In the framework of the EPN-Repro2, the second reprocessing campaign of the EPN, five Analysis Centres homogenously reprocessed the EPN network for the period 1996–2014. A huge effort has been made for providing solutions that are the basis for deriving new coordinates, velocities and troposphere parameters for the entire EPN. The individual contributions are then combined in order to provide the official EPN reprocessed products. This paper is focused on the EPN Repro2 tropospheric product. The combined product is described along with its evaluation against radiosonde data and European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis (ERA-Interim) data.

Citation: Pacione, R., Araszkiewicz, A., Brockmann, E., and Dousa, J.: EPN Repro2: A reference GNSS tropospheric dataset over Europe, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2016-369, in review, 2016.
Rosa Pacione et al.
Rosa Pacione et al.
Rosa Pacione et al.

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Short summary
The use of ground-based GNSS data for climate research is an emerging field. The reprocessing activity done under EUREF umbrella was a huge effort generating homogeneous tropospheric products to be used as a dataset for monitoring trend and variability in atmospheric water vapour. Assimilation trials of reprocessed ZTD into European climate reanalysis are ongoing. It will strength the cooperation between geodesists and climatologists, one of the aim of the COST Action ES1206.
The use of ground-based GNSS data for climate research is an emerging field. The reprocessing...
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