1. WP2 Products in Mediterranean Sea
EMODNET Chemistry 7th Steering Committee,
  SYKE, Helsinki, 7 June 2016
WP2 Products in Mediterranean Sea
Sissy Iona, HCMR-HNODC

2. DIVA maps ec.oceanbrowser.net/emodnet
sextant.ifremer.fr/en/web/emodnet_chemistry/catalogue

3. Aggregated data collections Data Buffer
Water body total phosphorus
Water body phosphate
Water body ammonium
Water body total nitrogen

4. Aggregated data collections Data Buffer
Water body nitrate
Water body nitrate plus nitrite
Water body nitrite
Water body silicate

5. Aggregated data collections
Water body dissolved oxygen concentration
Chl-a: aggregation not complete yet

6. QC on aggregated data
Methodology for data QA/QC and DIVA products (2015)
Observations
Broad range control checks:
High values
Default not null values
Negatives
Zero values
Duplications checks
No Spikes detection was applied
No N:P ratio
Interpolated data
Comparison with spatially averaged profiles

7. Further QC
For each region, mean vertical profiles on the vertical levels of the DIVA analysis arecomputed
Values outside the “mean ± 3 stdev” were rejected
Very extremes values (mainly coastal) are excluded in this way

8. Common format errors Scripts to correct these are available
ERROR: Header Line. 'Depth[m]' is not in the semantic header. Cannot import this variable.
Scripts to correct these are available

9. Format errors/possible cause
There are format errors in the harvested data
Make sure you use the the “Import > SeaDataNet Formats” option to validate the SDN format and not the “Import > ODV Spreadsheet”
“Import > ODV Spreadsheet” will not detect wrong P01 terms, mismatches between semantic and column headers, etc
Update the local odv txt files and inform MARIS for the corresponding CDIs updates
Scripts to correct these are available

10. Issues with wrong units/P01
QC on Oxygen
Issues with wrong units/P01

11. Glider Oxyg data with flag=2

12. Issues with the Instruments Oxygen-floats-west Med
Although in P01 there is no info for uncalibrated sensors

13. East Med Chl-a
West Med Chl-a

14. QC feedback loop
s have been (will be) sent to Mediterranean cdi_partners and data originators for the results of the QC
Your response is needed to:
correct the sources and
Not exclude your data for the products

15. Influence of coastal data

16. Influence of coastal data
Usage of variable Correlation Length depending on the depth in the next updates

17. Contaminants/Work so far
330 P01 terms in water profiles
=> 90 P35 terms
=> 60 missing units conversions
232 P01 terms in sediment
=> 44 P35 terms
=> 9 missing units conversions
424 P01 terms in time series
54 P35 terms
List of missing units conversions were sent to Reiner but not the conversions factors
New P35 in SDN-BODC vocabs => aggregation will be repeated