This paper introduces the development of a web- platform for sharing of environmental data in the framework of EvK2 – CNR Committee SHARE Project (Stations at High Altitude for Research on the Environment). This system intends to meet the requirement of access to the complex information concerning the acquisition of climate data at high altitude and to the data themselves. The tool that is being studied and developing proposes an environment for the research, dedicated mainly to high-altitude studies, allowing researchers to access the wealth of resources that are acquired by the climatologic stations. With regards to remote sensing data processing, the system gives the opportunity to free access to the data relevant either for atmospheric corrections or ground data calibrations. Moreover, into SHARE GeoNetwork, a specific topic is dedicated to the description of the new technologies developed in the SHARE Project. The core of the system is the catalogue of metadata based on GeoNetwork open source application, proposed on the principles of Free and Open Source Software (FOSS) and International and Open Standards for services and protocols (from ISO/TC211 and OGC). A new hierarchical structure has been implemented into SHARE for the description of metatada of the stations, sensors and measures The first release of SHARE-GeoNetwork is working from 2011 and it is accessible for public at http://geonetwork.evk2cnr.org. The integrated activity of the SHARE GeoNetwork is the implementation of the Data Base for the management of the measures acquired since 1987 by the Ev-K2 CNR Committee. These data have been ordered and stored in a coherent form by an open source database management system, Weather and Water Database (WDB), developed by the Norwegian Meteorological Institute. The geographic component of the system has been implemented and the publication of maps and georeferenced data is allowed.