APGD data access

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APGD (Alpine precipitation grid dataset) is a high-resolution grid dataset of daily precipitation developed at MeteoSwiss and covering the entire Alpine region. It was established as part of the EU FP7 EURO4M project. APGD incorporates more than 5500 rain-gauge measurements on average per day for the Alpine sections of Austria, Croatia, France, Germany, Italy, Slovenia and Switzerland. With 10-15 km station spacing, the dataset is one of the densest in-situ observation networks over a high-alpine topography worldwide. Using APGD, a probabilistic precipitation analysis for the Alpine region has been calculated (APGDEns) as part of the EU FP7 UERRA project. The method derives an ensemble that represents the Bayesian predictive distribution of the available information from rain-gauge data. The data is provided as ensembles of area-average precipitation over more than 500 hydrological catchments in the Alps. More information can be found on the APGD webpage. For questions regarding the datasets, please contact MeteoSwiss.

Actual version, user guide and update policy

APGD and APGDEns are static datasets (not updated).
Dataset Release date Period covered User guide
APGD 2013 1971-01-01 - 2008-12-31 Product documentation
APGDEns 2019 1971-01-01 - 2008-12-31 Product documentation

APGD and APGDEns example visualizations

The files below contain visualizations of APGD and APGDEns for the period from 1971-2008 of some indices for precipitation over the Alps. The files are in JPEG format. The ensemble spread in APGDEns is expressed as the relative 95% interquantile.

Dataset Index
APGD Mean annual precipitation [mm/year]
Frequency of wet days (≥1 mm) [fraction]
Mean of annual maximum daily precipitation [mm/d]
APGDEns Wet day (≥1 mm) intensity (median [mm] | relative ensemble spread [-]
95% quantile of daily precipitation (median) [mm] | relative ensemble spread [-]

Citation and acknowledgement

Whenever you publish research or applications based on these gridded data products, you should include the following acknowledgement and citations.

APGD:

Dataset DOI: 10.18751/Climate/Griddata/APGD/1.0

"Isotta, Francesco A.; Frei, Christoph; Weilguni, Viktor; Tadic, Melita Percec; Lassegues, Pierre; Rudolf, Bruno; Pavan, Valentina; Cacciamani, Carlo; Antolini, Gabriele; Ratto, Sara M.; Munari, Michela; Micheletti, Stefano; Bonati, Veronica; Lussana, Cristian; Ronchi, Christian; Panettieri, Elvio; Marigo, Gianni and Vertacnik, Gregor, 2014: The climate of daily precipitation in the Alps: development and analysis of a high-resolution grid dataset from pan-Alpine rain-gauge data, INTERNATIONAL JOURNAL OF CLIMATOLOGY, 34, 1657-1675, doi: 10.1002/joc.3794" Website

APGDEns:

"Frei, Christoph and Isotta, Francesco A., 2019: Ensemble Spatial Precipitation Analysis from Rain-Gauge Data Methodology and Application in the European Alps, JOURNAL OF GEOPHYSICAL RESEARCH ATMOSPHERES, in review."

Terms of use and access

APGD is freely available for non-commercial use upon registration on the APGD webpage. APGDEns is free for non-commercial research and non-commercial education projects upon request from MeteoSwiss.

News

24 October 2019
10 October 2019
Monthly E-OBS update released
7 October 2019
E-OBS v20.0e has been extended with global radiation fields
7 October 2019
E-OBS v20.0e released
30 September 2019
NGCD v19.09 released
23 September 2019
12 September 2019
Monthly E-OBS update released
26 August 2019
21 August 2019
Tables with observed temperature extremes have been added
21 August 2019
Monthly E-OBS update released
22 July 2019
15 July 2019
Monthly E-OBS update released
8 July 2019
Figures for Indices based on APGD have been added
25 June 2019
24 June 2019
13 June 2019
Monthly E-OBS update released
29 May 2019
Access page for the long-term Alpine precipitation reconstruction (LAPrec) has been created
29 May 2019
13 May 2019
Monthly E-OBS update released