Presentatie G. Spoelstra, ATLIS

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EMODnet

(European Marine Observation and Data Network)

HSB presentatie 29 oktober 2010

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HSB presentation 29 oktober 2010

Agenda

Background / Problem definitionObjectivesStandardsCoverageEMODNET Hydrographic portalData aspectsQuestions

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Background

Initiated by the EU's Maritime Policy Blue Book

The behavior of seas and oceans is crucial to human life on this planetThe marine life influences the provision of foodChanges in coastal morphology influence erosion, flooding and maritime transportOcean 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 domainsThe 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

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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

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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.

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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

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Standards

INSPIRE

OGC

SeaDataNet

Technology

SENSSpatial Enterprise Nautical Solutions

AGWSATLIS Geo Web Server

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Coverage

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Data - layers

World map

Coastline

Underwater features

DTM (Continuoussurface)

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

IsobathsInternal Internal

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Hydrographic Portal – URL

http://portal.emodnet-hydrography.eu

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Hydrographic Portal – user interface

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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

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Data aspects

Two data coordinators

ATLIS

IFREMER

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EMODNET northCoordinated by ATLISParticipating data providers:

Netherlands HOBelgium HOFrench HOGerman HODanish Survey DepartmentNorwegian HONational Oceanographic Centre UKIrish Geological ServiceGEBCO

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EMODNET southCoordinated by IFREMERParticipating data providers:

IFREMERSpanish Geological ServiceItalian Geological ServiceGEBCO

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Netherlands HO

Level 5 RBB gridded data for most parts of continental shelf areaCharted depths for northern partMeta data and survey areas (stukkenkaart)Data format ASCII xyzLat long format WGS84LAT depths positive down3.048.958 depths from RBB465 depths for charted depth areaENC data delivered (usage 3 and 2)

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Belgium HO

500 meter gridded ASCII dataSource both BE,NL and UK (UK for northern part)No metadataData format ASCII xyzUTM zone 31LAT depths positive downNo ENC data20803 depths

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Irish Geological Service

0.00417 degree gridded dataESRI ASCII grid3.566.086 depthsUnprojected WGS 84 MSL depths negative downNo complete coverage of Irish shelfResolution was slightly off with EMODNET specsNo ENC dataNo metadata

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German HO

500 x 500 meter gridIncomplete coverage1.346.323 depthsUnprojected Lat/lon WGS84LAT depths positive downNo ENC dataNo metadata

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French HO

ASCII point data4.780.886 depths Unprojected Lat/lon WGS84LAT depths positive downIncluding metadata

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NOCS UK

ESRI ASCII grid for own data5.810.477 depths Unprojected Lat/lon WGS84LAT depths positive downNo metadataEMODNET grid data for combined GEBCO/NOCS data setNO UK HO data used

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Denmark (Survey Department)

NetCDF gridded data50 x 50 meter grid resampledDifferent source dataLed line to MultibeamUnprojected Lat/lon WGS84Meta data in ESRI project filesNo information about resampling method

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Norway HO

No complete DTM available yetAlternative sourceENC dataBathydata created based on:

ContoursSpotsoundingsCoastline

6.820.472 depth generated

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EMODNET grid format

1. Lat2. Lon3. Minimum depth4. Maximum depth5. Mean depth6. Standard deviation in grid7. Number of cells used to interpolate empty grid cells8. Number of depths used to calculate mean depth9. Smoothed depth10. Difference in % between smoothed depth and mean11. CDI record id for source12. DTM source other than GEBCO13. GEBCO indicator

ASCII format with .grd extention; delimitedColumns:

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GRID definition

Grid size: 0.00416667 degrees square

15 arc seconds

Approximate 500 x 500 meter

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GRID positioning

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Questions