1. Data aggregation and products generation
EMODnet Chemistry 3 – Annual meeting February 2018
Roskilde, Denmark
EUTROPHICATION
Data aggregation and products generation
NE Atlantic Sea
Julie GATTI
IFREMER

2. Outline 1st data Harvesting description QC workflow Check Format
Check duplicates
Data aggregation
Aggregated collection
Data QF status
on-going Data QC
High frequency data
Next steps / Perspectives
Roskilde, February 2018

3. 1st data Harvesting: Eutrophication
NE Atlantic region : MSFD definition (red) + MARIS polygon (blue)
North limit : paralell 48°N
West limit : 42°18’W
Gibraltar strait : meridian line 5°55’W
Roskilde, February 2018

4. 1st data Harvesting: Eutrophication
NE Atlantic region : CDIs -> CDIs without sediment data
+34%
EMODnet 2
Roskilde, February 2018

5. 1st data Harvesting: Eutrophication
Distribution by partners : 12 EDMOs with 1 new (MI)!
3.512 1 3
10.081
283
10.715
2.087 12
11.518 54
279
331
38.876
Roskilde, February 2018

6. 1st data Harvesting: Eutrophication
Vertical Profiles (VP) and Time Series (TS) VP TS
Coastal monitoring
BUT : -> underestimation of TS : how repeated VP have been defined in CDIs?
-> overestimation of VP : trajectories of 1 measurement (surface underway data)
Roskilde, February 2018

7. QC workflow : 1- Check format
1st step of QC : check format of ODV files
SDN import in ODV beta version
Check format with OCTOPUS
Errors in ODV files / CDIs
No usable data found
Wrong LOCAL_CDI_ID or EDMO code
Errors in ODV-SDN format
Extra character separator
Wrong semantic in SDN mapping for units
Missing values incorrectly coded -> flag 4 or 1
Warnings
Date precision lower than ISO pattern
SDN vocabularies version (Invalid P011/P061)
Wrong SDN reference xlink
Roskilde, February 2018

8. QC workflow : 1- Check format
Warning on Date/Time format
Octopus warning:
Input:
After ODV import and ODV spreadsheet export:
-> Correction to do : T22 into T22:00:00.000
We loose time information !
Roskilde, February 2018

9. QC workflow: 2- Check duplicates
12 Duplicates in CANIGO Leg cruise between MI (396) and IEO (353)
IEO MI
PRES [decibar=10000 pascals]
Pressure [dbar]
TEMP [Celsius degree]
SeaTemperature [degC]
PSAL [P.S.U.]
Salinity [dimensionless]
1.0 5
2.1 6
3.1 7
4.2 8
5.2 9
6.2 10
7.3 11
8.3 12
23.225
9.4 13
36.633
10.4 14
23.224
11.5 15
23.223
12.5 16
13.5 17
14.6 18
15.6 19
16.7 20
17.7 21
18.7 22
19.8 23
22.955
20.8 24
21.9 25
22.9 26
24.0 27
25.0 28
26.0 29
36.623
Depth shift 4dbar
Same metadata (location)
Same data
Roskilde, February 2018

10. QC workflow: 2- Check duplicates
List of the12 Duplicates in CANIGO Leg to discuss
Cruise
Station
LOCAL_CDI_ID
CDI-record id
EDMO_code
THALASSA LEG2 (CANIGO) 90
SI _353_H10
477067
353
CANIGO 0997 Leg 2
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 9, Cast ca01d009
Thalassa_CANIGO_0997_Leg_2_9579
396
110
SI _353_H10
477069
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 11, Cast ca01d011
Thalassa_CANIGO_0997_Leg_2_9581
290
SI _353_H10
477087
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 29, Cast ca01d029
Thalassa_CANIGO_0997_Leg_2_9599
340
SI _353_H10
477092
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 34, Cast ca01d034
Thalassa_CANIGO_0997_Leg_2_9604
460
SI _353_H10
477104
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 46, Cast ca01d046
Thalassa_CANIGO_0997_Leg_2_9616
870
SI _353_H10
477145
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 87, Cast ca01d087
Thalassa_CANIGO_0997_Leg_2_9657
1670
SI _353_H10
477219
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 167, Cast ca01d167
Thalassa_CANIGO_0997_Leg_2_9730
1730
SI _353_H10
477225
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 173, Cast ca01d173
Thalassa_CANIGO_0997_Leg_2_9736
2090
SI _353_H10
477239
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 209, Cast ca01d209
Thalassa_CANIGO_0997_Leg_2_9750
2140
SI _353_H10
477244
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 214, Cast ca01d214
Thalassa_CANIGO_0997_Leg_2_9755
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 65, Cast ca01d065
Thalassa_CANIGO_0997_Leg_2_9635
CTD profile from RV Thalassa, CANIGO 0997 Leg 2, Station 142, Cast ca01d142
Thalassa_CANIGO_0997_Leg_2_9709
Roskilde, February 2018

11. QC workflow : 3- data aggregation : Depth&Pres and P35
3 collections for vertical profiles:
Ocean_depth_profiles
Ocean_depth_profiles(1)
Ocean_pressure_profiles
1 collection for time series: aggregated_time_series.odv
P35 aggregation – check unmapped P01:
Add Unit conversion
Add P01/P35 mapping
Other errors in format detected
1 collection : Aggregated_ocean_ALL_depth_profiles.odv
Roskilde, February 2018

12. Aggregated collection
Distribution by parameters
Roskilde, February 2018

13. Data QF Nutrients and organic matter
Status before QC
Roskilde, February 2018

14. Data QF Chlorophyll pigment
Status before QC
Roskilde, February 2018

15. Data QF Oxygen and others
Status before QC
Roskilde, February 2018

16. Data QC – on going Phosphate example : High river mouth vatlue
Zero values : flag 6 or 9?
Out of range
Roskilde, February 2018

17. Data QC – on going Oxygen example : Pb of unit/conversion
ARGO data not yet validated in DM
Roskilde, February 2018

18. High frequency data: Undulating/towed data and Underway surface data
TH1099 cruise – Towed CTD: 1s sampling
Mixed data
JC025 cruise : scanfish data: 2s sampling
DIVA maps
JR cruise : CTD+TSGdata: 60s sampling
Roskilde, February 2018

19. Next steps / Perspectives
Data aggregation
Finish the QC
Send a report to the Atlantic partners
Study the spatio-temporal distribution of each parameter
DIVA maps
DIVA workshop : how to use DIVAnd
Update the Eutrophication maps
Identify coastal areas near major river mouths to generate higher resolution DIVA maps
Roskilde, February 2018

20. Thank you!