Using Ocean Data View
for EMODnet Chemistry
Reiner Schlitzer
Alfred Wegener Institute for Polar and Marine Research
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Upcoming major release ODV 5.0 (summer 2017)
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Optimized importers (SDN importer 8x faster)
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Tab-based multi-view capability
Data Processing Pipeline
1. Import - File Aggregation
2. Duplicates checks
3. Export – (Parameter P35 Aggregation,
Unit Conversions)
4. Data QC
5. Export of history/provenance records
File Import
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Metadata enrichment (imports all CDI fields provided via csv files)
Imports instrument code and fall-rate information from data files
Supports SDN netCDF files in addition to SDN/ODV txt files
64-bit ODV allows import of all SDN data files in one go
Duplicate Checks
P35 Parameter Aggregation
Source ODV collection must have been produced via
• option Import > SDN Formats
• using ODV 4.6.3 or later
Automatically downloads up-to-date versions of
P35 vocab and conversion database
Unit Conversion Database
P35 aggregated variables
Other source variables
not in any P35 variable
QC - Visual 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
QC - Automatic Range Checks
• full sample set
•sample sub-set
QC - QF Mass Assignments
•all samples of many or all stations (initialization)
•all samples in a window
•all or some selected samples of current station
•current sample only
Using Quality Flag Filters
Before filtering
After filtering
Provenance: Per-Station Data History
History information stays with station
data when exporting to ODV
spreadsheet or ODV collection.
Workshop Topics
1. Import - File Aggregation
2. Duplicates checks
3. Export – (Parameter P35 Aggregation,
Unit Conversions)
4. Data QC
5. Export of history/provenance records