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EEA coastline for analysis

EEA coastline for analysis. Dataset , QA, future work Oscar Gomez. Motivation. Different coastlines  used for different purposes The process : gather user needs , look at available data, and assemble a “ unique ” coastline Opportunities :

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EEA coastline for analysis

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  1. EEA coastlineforanalysis Dataset, QA, futurework Oscar Gomez

  2. Motivation • Differentcoastlines usedfordifferentpurposes • Theprocess: gatheruserneeds, look at available data, and assemble a “unique” coastline • Opportunities: • EU-Hydroavailable (link continental and marine waters), CLC2006 finalised • Reference data group at EEA

  3. Userneeds • Protectedareas: • statisticsfor marine and terrestrial N2000 are differentbecause of differentcoastlines • Manyprotectedsitesincludeverysmallislands • MSFD marine subregions • Data integration: continental vs marine, WFD water bodies.

  4. Existingcoastlines • CLC coastlinehttp://www.eea.europa.eu/data-and-maps/data/corine-land-cover-2000-coastline • Gooddelineationland/sea • Richattributes (CLC, Eurosion) • Incomplete • NOAA GSHHS http://www.ngdc.noaa.gov/mgg/shorelines/gshhs.html • EU-Hydro • Derivedfrom Image2006 (tideheightcorrespondstothat of thescene) • Incomplete (islands, countries, …)

  5. EU-Hydro coverage

  6. Delineation differences

  7. Methodologicalprocess • Gatheruserneeds (February) • Explore methodologicaloptions (February) • Construction of thecoastline (March) • Internal QC and corrections (April) • Draftpublication (April) • Improvementsafterfeedback (May) • Dissemination • External QA (June) • Refinements (December)

  8. Technicalchoice • 2 optionswereevaluated: • A patchwork of differentdatasets (CLC, NUTS, …, difficulttomaintain) • EU-Hydro as core, and addingadditionalareasfrom GSHHS as auxiliarycoastline. • 2nd optionwaschosen (easiermaintenance, butfollowingsatelliteinstead of lowertide)

  9. Result

  10. Addingislands

  11. Internal QC (I)

  12. Internal QC (II)

  13. Publication and dissemination • EEA Dataservice: http://www.eea.europa.eu/data-and-maps/data/eea-coastline-for-analysis/ • Beingusedby: • N2000 barometer(DG ENV) • Partners at EEA marine group and ETC/ICM (MSFD) • ETC/SIA • We are receivingfeedbackonissuestocorrect

  14. Qualityassurance (external) • 30x30km gridalongthecoastline • 4 types of errorswereanalyzed: • Adjustment distance: Average deviation in metres to Bing Maps in the cell • Seriouserrors: geographical features or infrastructures which haven’t been digitized • Topological errors, discontinuities • Non digitized islands

  15. Serious errors (omission)

  16. Continuity errors (commission)

  17. Missing islands (omission)

  18. Adjustment

  19. Seriouserror and omissionexample

  20. Futurework (potential) • Improvementopportunity of geometry: • Delegationagreement RDA (Copernicus) • Improvement of EU-Hydro alsocoastline? • Time frame: end 2014 • Integration of attributes, and national data (linear referencing) • Make consistent baselines (adapting those from Eurosion)  zoning (internal, territorial waters, contiguous zone, EEZ)

  21. Linear referencingallowsforshowingnational waterbodieson European referencedatasets

  22. Baselines

  23. Thank you!Questions? oscar.gomez@eea.europa.eu

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