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Reiner Schlitzer Alfred Wegener Institute for Polar and Marine Research

Data Quality Control and Visualization with Ocean Data View 4. Reiner Schlitzer Alfred Wegener Institute for Polar and Marine Research. Reality …. Wish: All data are of highest quality. Objective :

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Reiner Schlitzer Alfred Wegener Institute for Polar and Marine Research

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  1. Data Quality Control and Visualization with Ocean Data View 4 Reiner Schlitzer Alfred Wegener Institute for Polar and Marine Research

  2. Reality… Wish: All data are of highest quality.

  3. Objective: ExtendandutilizeODV‘s extensive graphicaldisplaycapabilitiesandinteractivecontrolsforautomaticandvisualqualitycontrolanddataqualityflagging.

  4. General dataanalysisandvisualizationsoftware • >10,000 registered users

  5. Ocean Data View - Version 4 Completesoftwarere-codingtoovercomemanylimitationsof ODV3. Specifically…

  6. …allow an unlimitednumberofnumericandtext metavariables. Cruise Station Type YYYY-MM-DDTHH:MM:SS.SSS Longitude [degrees_east] Latitude [degrees_north] required LOCAL_CDI_ID EDMO_code Bot. Depth [m] … etc. required by SeaDataNet optional

  7. …supporttheSeaDataNetqualityflagscheme. QFSetID= SEADATANET Set Description: SeaDataNet quality flags Reference: http://vocab.ndg.nerc.ac.uk/term/L201/1/<code>

  8. …support all importantqualityflagschemesandmappingsbetweenthem. QFSetID= SEADATANET Set Description: SeaDataNet quality flags Reference: http://vocab.ndg.nerc.ac.uk/term/L201/1/<code>

  9. ODV Integration into QC Process QC with ODV NODC Data Archive Data exchange via extended ODV spreadsheetformatadoptedbySeaDataNet

  10. Data Editing and Quality Control • easy spotting and identification of outliers or offsets • painless editing of data value and quality flag • logging of all value or flag modifications • automatic range checks and manual or automatic editing

  11. Manual Data Editing and Quality Control

  12. Automatic Range Checks and Outlier Removal

  13. All changeslogged in file.

  14. Usingqualityflagsto filter thedatabyquality.

  15. Integration of DIVA gridding software into ODV • ODV will automatically… • create all filesfor DIVA • run DIVA meshgenerationandestimation • readanddisplaythegriddedfield

  16. Example (3) - Filling large gaps…

  17. Training: Total of 4.5 daysofpresentationsandexercisesattwoSeaDataNettrainingcoursesat IOC Oostende.

  18. JRA3 Deliverables:    

  19. Future: Use of ODV/DIVA in Web Applications Image Gridded Values Web Application X/Y/Z Data ODV/DIVA

  20. Componentof Version 2 viewingservices • Identifypartner PIs anddatacenters • Start discussionofinterface design

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