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| Titel |
Federated data bases for the development of an operational monitoring and forecasting system of the ocean: the THREDDS Dataset Merger |
| VerfasserIn |
S. Nativi, G. M. R. Manzella, F. Paolucci, P. Mazzetti, L. Pecci, L. Bigagli, F. Reseghetti |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: Earth System Science Data access, distribution and use for education and research ; Nr. 8 (2006-06-06), S.39-47 |
| Datensatznummer |
250005308
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| Publikation (Nr.) |
 copernicus.org/adgeo-8-39-2006.pdf |
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| Zusammenfassung |
| During the last decade, operational monitoring and forecasting systems have
been developed in all the European seas. The exchange of data and products
and the development of services for a wide community of users pose some
fundamental issues, whose solution has become a priority in integrated and
GMES referring projects, such as the MERSEA European project. These projects
aim to develop a European system for operational monitoring and forecasting
on global and regional scales of ocean physics, bio-chemistry and ecosystems.
GMES system and its operational projects need to federate resources and
expertise coming from diverse organizations working on different Earth
Sciences fields (e.g. satellite data processing, in situ observing systems,
data management, ocean and ecosystem modeling, etc.). Therefore, it is
required a Marine Information Management (MIM) system capable of facilitating
the regular real-time exchange of high quality information, data and
products. Moreover, MIM system must provide appropriate information for a
wide range of external users both in real-time and delayed mode.
In this paper an architecture based on the OPeNDAP/THREDDS technology is
proposed as a solution for these operational systems. In this context, a
catalog merging solution is introduced for the MIM system, which results in
the design and development of the THREDDS Dataset Merger (TDM): a set of
services meant to merge THREDDS Dataset Inventory Catalogs, so to achieve a
unique catalog service for a whole database federation. TDM service merges
distributed and autonomous THREDDS catalogs in order to work out a virtual
merged catalog. The TDM service was extended in order to provide automatic
catalogs synchronization. This service allows extending the pull-based TDM
paradigm to support push-based applications. Some security issues are also
considered. |
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