Presentatie G. Spoelstra, ATLIS
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Presentatie workshop 29 Oktober 2010. Het Marine Observation and Data Network heeft tot doel de meest geëigende processen en de beste technologie in te zetten om inzicht te krijgen in het gedrag van de zeeën en oceanen. Het huidige project zet daarin een eerste stap door het samenvoegen en beschikbaar stellen van tot nu toe gefragmenteerde en niet toegankelijk maritieme gegevens. In de presentatie wordt ingegaan op de daarbij toegepaste technologie. Ook wordt aangegeven op welke wijze een framework als SDI en een initiatief als INSPIRE worden toegepast.
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Presentatie G. Spoelstra, ATLIS
- 1. 1 EMODnet (European Marine Observation and Data Network) HSB presentatie 29 oktober 2010
- 2. 2 HSB presentation 29 oktober 2 Agenda Background / Problem definition Objectives Standards Coverage EMODNET Hydrographic portal Data aspects Questions
- 3. 3 HSB presentation 29 oktober 2 Background Initiated by the EU's Maritime Policy Blue Book The behavior of seas and oceans is crucial to human life on this planet The marine life influences the provision of food Changes in coastal morphology influence erosion, flooding and maritime transport Ocean circulation is a primary, if poorly-understood, influence on the terrestrial climate Since the industrial revolution there is an ever growing interdependence between the human and marine domains The impact of future changes in oceanic systems, their impact on human activity and the feedbacks on the ocean cannot be forecast without understanding the way the system works
- 4. 4 HSB presentation 29 oktober 2 Problem definition High demand for maritime data Available data is at a national level Available data is domain specific Single purpose data collection driven by a specific regulation (e.g. safe navigation) Data is of uncertain quality Difficult to create a coherent “picture” Regulation do not apply to private institutes and research facilities Cost Lack of specific standardisation
- 5. 5 HSB presentation 29 oktober 2 Objectives Define the appropriate processes, develop the best technology and estimate the costs of a final operational European Marine Observation and Data Network Provide first components of a final system Assemble fragmented and inaccessible marine data into interoperable, contiguous and publicly available data streams for complete maritime basins.
- 6. 6 HSB presentation 29 oktober 2 Objectives (improve and enhance) Discovery of Data Access to data Use of data Cost of data Coherence of Data Quality of Data. Quantity of Data
- 7. 7 HSB presentation 29 oktober 2 Standards INSPIRE OGC SeaDataNet Technology SENS Spatial Enterprise Nautical Solutions AGWS ATLIS Geo Web Server
- 8. 8 HSB presentation 29 oktober 2 Coverage
- 9. 9 HSB presentation 29 oktober 2 Data - layers World map Coastline Underwater features DTM (Continuous surface) Surveys (demo) Source Storage Format WMSExternal Surveys Layers External External External External External Internal Internal External External Internal data meta data Internal Internal Internal Internal Internal Internal DTM (GEBCO) DTM (Regions) Atlantic Ocean Mediterranean North sea Isobaths Internal Internal
- 10. 10 HSB presentation 29 oktober 2 Hydrographic Portal – URL http://portal.emodnet-hydrography.eu
- 11. 11 HSB presentation 29 oktober 2 Hydrographic Portal – user interface
- 12. 12 HSB presentation 29 oktober 2
- 13. 13 HSB presentation 29 oktober 2
- 14. 14 HSB presentation 29 oktober 2
- 15. 15 HSB presentation 29 oktober 2
- 16. 16 HSB presentation 29 oktober 2 Data content of EMODNET project Hydrography lot Water depth in gridded form (500 m grid) Water depth in vector form with isobaths at a scale of at least one to one million. Coastlines Underwater features
- 17. 17 HSB presentation 29 oktober 2 Data aspects Two data coordinators ATLIS IFREMER
- 18. 18 HSB presentation 29 oktober 2 EMODNET north Coordinated by ATLIS Participating data providers: Netherlands HO Belgium HO French HO German HO Danish Survey Department Norwegian HO National Oceanographic Centre UK Irish Geological Service GEBCO
- 19. 19 HSB presentation 29 oktober 2 EMODNET south Coordinated by IFREMER Participating data providers: IFREMER Spanish Geological Service Italian Geological Service GEBCO
- 20. 20 HSB presentation 29 oktober 2 Netherlands HO Level 5 RBB gridded data for most parts of continental shelf area Charted depths for northern part Meta data and survey areas (stukkenkaart) Data format ASCII xyz Lat long format WGS84 LAT depths positive down 3.048.958 depths from RBB 465 depths for charted depth area ENC data delivered (usage 3 and 2)
- 21. 21 HSB presentation 29 oktober 2 Belgium HO 500 meter gridded ASCII data Source both BE,NL and UK (UK for northern part) No metadata Data format ASCII xyz UTM zone 31 LAT depths positive down No ENC data 20803 depths
- 22. 22 HSB presentation 29 oktober 2 Irish Geological Service 0.00417 degree gridded data ESRI ASCII grid 3.566.086 depths Unprojected WGS 84 MSL depths negative down No complete coverage of Irish shelf Resolution was slightly off with EMODNET specs No ENC data No metadata
- 23. 23 HSB presentation 29 oktober 2 German HO 500 x 500 meter grid Incomplete coverage 1.346.323 depths Unprojected Lat/lon WGS84 LAT depths positive down No ENC data No metadata
- 24. 24 HSB presentation 29 oktober 2 French HO ASCII point data 4.780.886 depths Unprojected Lat/lon WGS84 LAT depths positive down Including metadata
- 25. 25 HSB presentation 29 oktober 2 NOCS UK ESRI ASCII grid for own data 5.810.477 depths Unprojected Lat/lon WGS84 LAT depths positive down No metadata EMODNET grid data for combined GEBCO/NOCS data set NO UK HO data used
- 26. 26 HSB presentation 29 oktober 2 Denmark (Survey Department) NetCDF gridded data 50 x 50 meter grid resampled Different source data Led line to Multibeam Unprojected Lat/lon WGS84 Meta data in ESRI project files No information about resampling method
- 27. 27 HSB presentation 29 oktober 2 Norway HO No complete DTM available yet Alternative source ENC data Bathydata created based on: Contours Spotsoundings Coastline 6.820.472 depth generated
- 28. 28 HSB presentation 29 oktober 2 EMODNET grid format 1. Lat 2. Lon 3. Minimum depth 4. Maximum depth 5. Mean depth 6. Standard deviation in grid 7. Number of cells used to interpolate empty grid cells 8. Number of depths used to calculate mean depth 9. Smoothed depth 10. Difference in % between smoothed depth and mean 11. CDI record id for source 12. DTM source other than GEBCO 13. GEBCO indicator ASCII format with .grd extention ; delimited Columns:
- 29. 29 HSB presentation 29 oktober 2 GRID definition Grid size: 0.00416667 degrees square 15 arc seconds Approximate 500 x 500 meter
- 30. 30 HSB presentation 29 oktober 2 GRID positioning
- 31. 31 HSB presentation 29 oktober 2 Questions
Editor's Notes
- 1. Discovery of Data. It is difficult for potential users to obtain an overview of what data - biological, chemical, physical, geological - are available in a particular region. 2. Access to data. Those holding the data may not release them either because of confidentiality or security constraints, because they do not or cannot allocate sufficient resources for archiving and maintaining data (e.g. data stored on increasingly obsolete technological systems) or because they wish to retain a monopoly of products derived from the data. 3. Use of data. Even where data are available, their use or re-use may be limited by the data policy of the owner. The primary driver for data creation can limit their broader use. 4. Cost of data. The prices imposed by some data-owners reduces the uptake of these data by users. 5. Coherence of Data. Developing a complete picture in time and space over a sea-area using data collected by different bodies is complicated by fragmented standards, formats and nomenclature. This is particularly the case when there is a need to study cross-border areas or to use data stemming from EN 17 EN diverse expert communities.. Whether studying ocean circulation, fish stock populations or tsunamis, data from different sources are required. 6. Quality of Data. There are no universally-recognised measures of quality, precision or accuracy. Metadata documentation may be sparse or inadequate so potential users do not know what confidence to ascribe to the data. 7. Quantity of Data. At present there is not enough data being observed to meet many user requirements. There are serious gaps in coverage and range of data types.
- SeaDataNet SeaDataNet has federated open digital repositories to manage, access and share data, information, products and knowledge originating from oceanographic fleets, new automatic observation systems and space sensors.