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The User Data Gateway (UDG)

The User Data Gateway (UDG) is the main access point to the different data services provided by the Santander Meteorology group. The UDG builds on a a THREDDS Data Server (UDG-TDS) and on a web portal for user authorization (the THREDDS Administration Portal, UDG-TAP). In addition to the standard web interface to explore and download the datasets, the UDG includes different (R and Matlab) packages for accessing remotely subsets of the data. A schematic view of the UDG is provided in the figure below. <center><B> REGISTRATION DATASET CATALOG INFO. FOR DATA ACCESS</B></center> The UDG supports the following international activities: <ul> <li>The group <B>PULIC_DATA</B> offers a number of datasets which are in the public domain (e.g. WATCH data, NCEP reanalysis, NCEP CFSv2 seasonal forecasting hindcast). <li><B>EUPORIAS</Ba>, <B>SPECS</B> and <B>NACLIM</B> (the European coordination of climate services activities ECOMS consortium). Global seasonal forecasting datasets from state-of-the-art seasonal forecasting systems (e.g. ECWMF System4). More info here. <li><B>VALUE</B> and <B>CORDEX-ESD</B>. A reduced set of global post-processed predictors from ERA-Interim for statistical downscaling purposes (work in progress to include hires observational gridded datasets over different european regions). More info here. </ul> The use of UDG requires registration. Access to data is obtained after requesting membership to the different groups. The data in the PUBLIC_DATA group is freely available to anyone (automatic membership authorization upon request). The data for particular groups/projects requires membership to the particular projects (moderated membership authorization). Besides the web services for subset data downloading, different R and Matlab packages have been developed to remotely access the different datasets. <ul> <li> The ECOMS data access R and Matlab packages allow accessing seasonal forecast data using a single command (see an example here). <li> The downscaleR package allows accessing observational and reanalysis datasets using a single command. </ul>

The group also supports a node of the <b>Earth System Grid Federation (ESGF)</b> which builds on the UDG-TDS and provides EURO-CORDEX simulations using the WRF model.

All these services build on the computing and storage infrastructure of the group.

<p style="background-color: rgb(255, 204, 204); These tools are jointly developed with different communities and are in continuous development (support from SPECS and EUPORIAS projects is acknowledged). </p>

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