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What station? Mapping of Eionet , WFD, and ICES stations

What station? Mapping of Eionet , WFD, and ICES stations. To what extend is the WFD stations coinciding with stations reported through Eionet and ICES? - Matching of WFD stations towards Eionet stations and ICES Station Dictionary

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What station? Mapping of Eionet , WFD, and ICES stations

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  1. What station? Mapping of Eionet, WFD, and ICES stations • To what extend is the WFD stations coinciding with stations reported through Eionet and ICES? - Matching of WFD stations towards Eionet stations and ICES Station Dictionary • Overlap in Eionet and ICES stations -Which Eionet stations are matching the ICES Station Dictionary (OSPAR and HELCOM stations)?

  2. Lessons learnt from last years exercise • Very few stations had a precise match based on latitude and longitude • The provided list of WFD and Eionet stations ranked by distance to each other were sent to countries during last years WISE SoE data capture – however the response rate were quite low • Absolute distance between stations maybe not the best criteria for matching stations

  3. Station lists used: • WFD list of surface water stations (Art. 8 reporting) issued in September 2009. Stations marked as CW and/or TW used - 7275 stations. • Eionet station table – 4828 stations • ICES Station Dictionary (based on information from OSPAR and HELCOM) – 8002 stations

  4. Stations matching by latitude and longitude

  5. Why is this excise not trivial? • Naming of stations not similar in different lists • Positions not exactly the same – e.g. number of decimals vary • Stations/sampling positions are understood quite different: • Eionet stations have nominal coordinates – default coordinates. Measurement data submitted without coordinates. Linked to stations by CountryCode and National Station ID. • ICES (HELCOM,OSPAR, AMAP) data are submitted with exact coordinates for each sampling event. Sampling events linked to stations by Station Dictionary (position with a range in latitude and longitude)

  6. Using Google Earth to display stations from the various station lists • Zoom in on the relevant country/sea region • Names or station ID according to the different station lists can be visualised • By using distance, patterns in stations, local knowledge, etc. stations might be matched • Excise have already been made base on subjective judgement – prepared EXCEL list can be inspected and approved or rejected.

  7. Stations in estuaries might differ quite a lot within short distances

  8. Data contributors Chlorophyll a data Stations might show a pattern in distance and direction to each other

  9. Beware that symbols might overlay each other – by clicking on them the spread out

  10. Displaying station ID by clicking on symbol

  11. Displaying station ID by clicking on symbol

  12. Stations on land might be found and corrected

  13. Questions/task to countries: • Are the prepared list of matching stations correct? – if not please indicates which stations are not • If you have identified other stations matching please provide this information to ETC Water (ICES) • If national lists of stations “belongings” exists please provide those to ETC Water (ICES) • Please check the national stations far on land – potential errors should be notified to ETC Water (ICES) • Deadline for feedback: 30th November 2009

  14. Thank you for your attention

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