The OGC Met Ocean domain working group provides a forum within which contributing communties can work together to incubate new data exchange standards for the meteorology and oceanography community.
WMO-OGC memorandum of understanding (MoU) is instrumental in providing the mechanism for the co-ordination between activities carried out by the OGC Met Oceans DWG and Hydrology DWG, and the activities carried out by the expert teams of WMO CBS OPAG-ISS with a view to developing the use of ISO/OGC standards for the WIS.
The the main parties involved in driving the requirements for conceptual modelling activity are described here: ConceptualModellingConstiuents
Note: this is written from a WMO perspective - largely with the aim of harmonising initiatives across a number of communities.
Our goal is to establish a core conceptual model that meets the needs of our stakeholder community and maintains compatibility with existing data encodings such as GRIB, BUFR and netCDF – providing a mechanism to map content from one format to another.
A common conceptual model will enable tooling and software to sourced / provisioned from the breadth of the community that subscribes to the core conceptual model
|This slide is taken from a briefing to WXXM/AIXM Conference 04 May 2010, National Centre for Atmospheric Research (Aaron Braeckel) © University Corporation for Atmospheric research. It suggests that there is significant community convergence around ISO/DIS 19156 Observations and Measurements - often referred to as *O&M2*
Best online tutorial resource can be found at the SEEGrid twiki
Although the specification title indications ‘observations’ it is equally valid for forecast phenomena – one is still using a procedure (i.e. numerical modelling) to estimate the value of a property of some feature of interest
The O&M model (and the accompanying Sampling Features models) have been successfully applied to a wide number of domains where the user community are interested in the ‘data-acquisition’ metadata – such as process, quality etc. Because O&M has been proven to be applicable to a wide number of domains, tooling and software developed for this model will also be widely applicable, increasing the likelihood that consumers of data conforming to this model will have tooling available to exploit its rich semantics.
Furthermore, the OGC has published a service specification: Sensor Observation Service (SOS) specifically to allow data conforming to the O&M model to be exploited through domain-agnostic tooling.
Develop narrative based on realistic & focused user scenarios
Extract example datasets from existing (or postulated) workflows described within use cases
Attempt to map content of datasets onto O&M model – identifying restrictions, constraints, controlled vocabularies
Identify compatibility of existing encodings (BUFR, GRIB, CF-netCDF etc.). Develop conventions (or amendments) for their use with the common conceptual model … and hence compatibility of the common conceptual model with existing tooling and practices within the community