ADGEO Advances in Geosciences ADGEO Adv. Geosci. 1680-7359 Copernicus Publications Göttingen, Germany 10.5194/adgeo-8-57-2006 Extending THREDDS middleware to serve OGC community Nativi S. 1 2 Domenico B. 3 Caron J. 3 Davis E. 1 2 Bigagli L. Institute of Methodologies for Environmental Analysis of the National Research Council (IMAA-CNR), Italy Faculty of Engineering, University of Florence at Prato, Italy Unidata Program Center University Corporation for Atmospheric Research (UCAR), USA 06 06 2006 8 57 62 Copyright: © 2006 S. Nativi et al. 2006 This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Generic License. To view a copy of this licence, visit https://creativecommons.org/licenses/by-nc-sa/2.5/ This article is available from https://adgeo.copernicus.org/articles/8/57/2006/adgeo-8-57-2006.html The full text article is available as a PDF file from https://adgeo.copernicus.org/articles/8/57/2006/adgeo-8-57-2006.pdf

As far as interoperability is concerned, in a service-oriented framework, it is possible to distinguish different service tiers; each tier contains systems and tools which implement that tier's specific task. The present paper analyses such a framework for the Earth Sciences and the GIS information communities. For the Earth Sciences community, the heterogeneity of existing protocols and data models is outlined, considering the experience of the Unidata community. For the GIS community, the interoperability opportunities laid by the OGC's specifications are briefly introduced. The need of achieving the two communities' frameworks interoperability, and its importance for science Digital Library applications are introduced. A solution is presented and discussed; it is based on the following technologies: THREDDS Data Server, OGC WCS/WFS and ncML-GML. An OGC interoperability experiment, which tests the proposed solution, is briefly presented.