INSPIRE Community Forum

New Call for participation: MIG temporary sub-group on Extension of Download Service Technical Guidelines for Web Coverage Services (WCS) - MIG Action MIWP-7b

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A new call for participation for the MIG temporary sub-group on Extension of Download Service Technical Guidelines for Web Coverage Services (WCS) (MIWP-7b) is now open.

Many INSPIRE spatial data themes (orthoimagery, elevation, geology, atmospheric conditions/meteorological geographical features, oceanographic geographical features, soil, land cover, natural risk zones, energy resources) include data that, according to the INSPIRE data specifications, have to be made available as coverages. The ‘Habitats and Biotopes’ and Environmental Monitoring Facilities’ specifications mention that the use of coverage model should be considered once mature implementations appear. Other data specifications such as 'Sea Regions' whilst not mandating data should be provided as coverages, would benefit from consideration within these guidelines.

The current TG for download services are based on Atom feeds (for pre-defined dataset download services) and WFS 2.0 (for pre-defined dataset and direct access download services). While coverage data can also be provided using Atom feeds or WFS, these options are not well suited for many coverage datasets, because single coverages are often several GB or even TB in size and users are typically only interested in some sub-set of the data, e.g. as defined by a user-defined bounding box or time period (trimming) or queries that reduce the dimension of the result coverage (slicing), e.g. extracting a temperature surface at a certain depth from a 3D ocean temperature coverage.

The MIG workshop on WCS-based INSPIRE download services on 14-15 October 2014 demonstrated that all operations required by the Download Service IRs can be mapped to the WCS 2.0 standard, and that using a WCS for providing coverage data provides a number of benefits and opportunities. The workshop also illustrated that further guidelines or best practices are needed for how to provide harmonised INSPIRE coverage data through the WCS. Such guidelines should revisit and, if required, propose updates to the encoding guidelines currently included in the data specifications.

The INSPIRE MIG has decided to set up a temporary sub-group to develop such guidelines as part of action MIWP-7b.

The main outputs of the sub-group will be:

  • Updated Technical Guidelines for Download Services to include WCS
  • Technical Guidelines (or updates to existing technical guidelines) for the provision of coverage data in conformance with the INSPIRE data models using a WCS
  • Open Source INSPIRE compliant WCS 2.0 implementation(s)  based on existing mature WCS 2.0 software
  • Analysis of the impacts (e.g. costs) of implementing the updated Technical Guidelines

A detailed description of the scope, tasks and deliverables of the sub-group are available in the attached Terms of Reference (ToR), available through the MIG platform:

https://ies-svn.jrc.ec.europa.eu/issues/2441

If would like to support the work of this sub-group with your expertise, especially on download services & coverages and related needs / use-cases, please send an e-mail to Jukka Rahkonen (cc: to Michael Lutz) with the following information:

Name:
E-mail:
Affiliation:
Expertise: [list the experise and experience that qualifies you for participation in this sub-group]
Contributions: [describe how you will contribute to the the tasks and/or deliverables mentioned in the ToR]

The initial deadline for applications is 2015-05-31.

The virtual kick-off meeting is tentatively planned for early June (exact date TBD).

Jukka Rahkonen (National Land Survey of Finland) & Michael Lutz (JRC)


Finally, remind that a discussion topic on this subject is already open within Thematic Cluster #3 (Elevation, orthoimagery, Reference systems and Geographical grids), waiting for your valuable contribution for supporting the tasks of this new working grup:

https://themes.jrc.ec.europa.eu/discussion/view/22150/web-coverage-service-wcs-a-missing-piece-in-inspire

Elevation, Orthoimagery, Reference Systems and Geographical Grids Cluster

Elevation, Orthoimagery, Reference Systems and Geographical Grids Cluster

INSPIRE Thematic Cluster Elevation, Orthoimagery, Reference systems, Geographical grids - Join this group to share your knowkledge, learn and collaborate in solving issues related to the Elevation, Orthoimagery, Reference systems and Geographical grids themes