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The MyOcean View Service: demo

The MyOcean View Service: demo. Jon Blower, Guy Griffiths, Kevin Yang, Keith Haines (University of Reading, UK) Thomas Loubrieu ( Ifremer , France). MyOcean : GMES Marine Core Service. Operational View Service interface. THREDDS + ncWMS. THREDDS + ncWMS. THREDDS + ncWMS. Gridded data.

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The MyOcean View Service: demo

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  1. The MyOcean View Service: demo Jon Blower, Guy Griffiths, Kevin Yang, Keith Haines (University of Reading, UK) Thomas Loubrieu (Ifremer, France)

  2. MyOcean : GMES Marine Core Service

  3. Operational View Service interface THREDDS + ncWMS THREDDS + ncWMS THREDDS + ncWMS Gridded data Gridded data Gridded data Analyses, forecasts, satellite products

  4. Operational View Service interface Experimental interface THREDDS + ncWMS THREDDS + ncWMS THREDDS + ncWMS Oceanotron + WMS Oceanotron + WMS Gridded data Gridded data Gridded data Point data Point data Analyses, forecasts, satellite products In situ observations

  5. What it gets used for • Quicklooks • “Is this the data I want?” • Diagnostics • “Is the model behaving itself?” • Communication • Simple visualizations, posted to blogs • In future, may be an alternative MyOcean catalogue front-end

  6. Important points • ncWMS implements some extensions to help scientific visualization • In situ data visualization is particularly challenging to WMS • By embedding into THREDDS, “WMS-enabling” the system was reasonably straightforward • THREDDS was familiar technology in the community • Data providers sometimes reluctant to spend time on configuration! • Color scale ranges were a particular problem! • I’d assumed that reliability would be a big problem, but so far so good • However, third-party background map services are frequently unreliable • But scalability still worries me!

  7. Interoperability challenges • Most WMS clients seem to work fine against MyOcean WMS servers • (they can’t of course access the “extensions”) • Some clients don’t respect parts of the WMS spec: • TIME and ELEVATION dimensions • Nested Layers • Layer property inheritance • Legend graphics • start/stop/period syntax for time axes • Need to harmonize styles to compare with third-party WMS • Error handling and reporting in clients is frequently unhelpful

  8. Plans for MyOcean2 • Incorporate in situ data into operational View Service • Integrate with access control • Research into developing intercomparison tools • In-situ observations plus models

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