The Blue-Cloud Data Discovery and Access service is one of the two main components of the Blue-Cloud technical framework, next to the Blue-Cloud Virtual Research Environment (VRE).
It facilitates discovery and retrieval of data sets and data products for external users in stand-alone mode. Functionality to serve also users of the VRE through connectivity will be added soon. The Blue-Cloud data sets are managed in blue data infrastructures (BDIs) that are connected to the Blue Cloud service to serve federated discovery and access.
A common interface is provided for discovery and retrieval of data sets and data products from each of the federated BDIs. The interface also includes facilities for mapping and viewing the locations of data sets, as this is part of the query dialogue. Moreover, the interface has a shopping mechanism, facilitating users to compose and submit mixed shopping baskets with requests for data sets from multiple BDIs.
The Blue-Cloud Data Discovery and Access service makes use of web services and APIs, following protocols such as CSW, OAI-PMH, ERDDAP, or otherwise, as provided and maintained by the BDIs. These are used to deploy machine-to-machine interactions for harvesting metadata, submitting queries, and retrieving resulting metadata, data sets and data products.
The query mechanism has a two-step approach:
The Blue-Cloud Data Discovery and Access service will help marine data users:
It will also support managers of blue data infrastructures in: