1. Data aggregation and products generation in the Norwegian and Barents Seas
Ann Kristin
Østrem
Institute of Marine Research, Norway

2. Definition of the region
MSFD regions not defined in this area
Use ICES Ecoregions instead
Included the Arctic Ocean, Greenland Sea and Icelandic Waters
4/6/2019
Annual meeting, Roskilde, 6-7 February 2018

3. Data overview – unrestricted data
profiles from 7 partners
Most data in Norwegian Sea, western Barents Sea, south/west of Iceland
Data outside the defined region (ferrybox?)
– also included in the North Sea region?
Partner (EDMO)
Profiles
IMR (612)
25182
RIHMI-WDC (681)
11897
IFREMER (486)
2856
ICES (730)
1413
BODC (43)
212229
PANGAEA (3234)
233
DOD (96) 17
Total
258839
4/6/2019
Annual meeting, Roskilde, 6-7 February 2018

4. Annual meeting, Roskilde, 6-7 February 2018
Data overview - Oxygen
Only data in one year in Fram Strait? -> glider data
Will this be a problem in DIVA?
Oxygen data ; almost no data in the Barents Sea
Oxygen (all data):
Oxygen
(without glider):
4/6/2019
Annual meeting, Roskilde, 6-7 February 2018

5. Variables in data set (P35)
Measuring area type: Curve (ferrybox, glider),
Point (other data)
Variable
Point
Curve
Phosphate
34986
Silicate
31339
Nitrate
26296
Nitrite
25346
Chlorophyll-a
20768
46301
Dissolved oxygen
19603
169511
Phaeopigments
18277
Salinity
17277
215799
Temperature
17260
215812
Variable
Point pH
2033
Dissolved oxygen saturation
346
Total alkalinity
312
Nitrate plus nitrite
311
Dissolved inorganic carbon
105
Particulate organic carbon 40
Ammonium 37
Total phosphorus 34
Particulate nitrogen 26
Left table: Enough data to make DIVA products
Almost no data for ammonium, nitrate+nitrite, totalP, totalN
- can not make the same products as the other regions
4/6/2019
Annual meeting, Roskilde, 6-7 February 2018

6. Data examples - Nitrate
Most of the data in standard sections and along the Norwegian coast
Time period:
Not much data in winter
November-December: Norwegian fjords
Nitrate and nitrite separately in most of the region
Icelandic Waters, southeast Greenland:
Nitrate+nitrite
4/6/2019
Annual meeting, Roskilde, 6-7 February 2018

7. Annual meeting, Roskilde, 6-7 February 2018
QC - Nitrate
Negative values, mostly in CTD data
Stations with all data close to 0 – wrong units?
Default values (missing data): -9.98, 0 ?
Missing comma: > 3.05
4/6/2019
Annual meeting, Roskilde, 6-7 February 2018

8. Data examples - Phosphate
Data covering the whole region, also in south-west
Data from a longer period:
QC issues mostly the same as for nitrate
Many of the same problems as for nitrate.
Longer time period:
4/6/2019
Annual meeting, Roskilde, 6-7 February 2018