Report on Atlantic area
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Transcript of Report on Atlantic area
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Expertsmeeting SPLIT, Croatia 17-18 June 2014
REPORT ON ATLANTIC AREA
With IFREMER, RIHMI-WDC, IHPT and IEO contributions
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• Data received in two separated sets – Data collected by MARIS robot (8 757 CDIs)• 8 489 stations of vertical profiles, 268 time
series– Additional Spanish data which were not available
when the robot run (2 780 CDIs, vertical profiles)
DATA INVENTORY (1)
Potential duplicates!
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DATA INVENTORY (2)
EDMO Code
Name Country Nb of CDIs
353 IEO Spain 5 518486 IFREMER France 2 358590 IHPT Portugal 1 143612 IMR Norway 11681 RIHMI Russian
Federation2 507
Total 11 537
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• Deletion of empty stations (No measurements on all levels for the parameter)
• Deletion of empty lines in a station : some levels with no measurements for the parameter
• Search for duplicates (linked to the 2 distinct datasets)
• QC using ODV– Search for out of range values with Flag = 1– Set a QC for all measurements with Flag=0– Set default values with Flag=0 or Flag=1 to Flag=9
• Write a report on QC and send results to data providers
QUALITY CHECKS
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• Nitrate and Nitrite• Ammonium• Phosphate• Silicate
NUTRIENTS PARAMETERS
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Parameters Nb stations
Nb measureme
ntsNTRI+NTRA (µmol/l)
1539 7973
NTRI (µmol/l) 5781 35748NTRA (µmol/l) 5663 43531NTAW (µmol/kg) 78 998NTIW (µmol/kg) 78 826Nitrite (µg/l) 146 1109Nitrate (µg/l) 78 225Total 10268 90140
NO2 – NO3 DATA, BEFORE QC (1)• 10 268 vertical profiles, received as
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• Output parameter for product = – NOx = Nitrite+Nitrate [µmol/l]
• Assumptions– When only Nitrate available assumption that it is
Nitrate+Nitrite– When only Nitrite measurements : data not kept
• Conversions– Conversion from µmol/kg µmol/l:
• using ODV conversion Any µmol/kg to Any µmol/l
– Conversions from µg/l µmol/l: • NO2+NO3/14.00670
NO2 – NO3 DATA, BEFORE QC (2)
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NO2-NO3 DATA, AFTER QC (1)• 7 272 vertical profiles
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NO2-NO3 BEFORE AND AFTER QC
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NO2 – NO3 DATA, AFTER QC (2)• 7 272 vertical profilesFlag value NOx
(Nitrate+Nitrite)
[µmol/l]0 (No QC) 01 (Good) 46 188
3 (Doubtful) 2224 (Bad) 251
5 (Changed) 56 (below detection
limit)924
Total 47 590
3 detection limits• 0.24 µmol/l• 0.5• 0.7
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NOX DISTRIBUTION
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Parameters Nb stations
Nb measureme
ntsAMON (µmol/l) 5 255 27 511AMOW (µmol/kg) 77 783Ammonium (µg/l)
1 20
Total 5 333 28 314
AMMONIUM DATA, BEFORE QC (1)• 5 333 vertical profiles, received as•
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• Output parameter for product = –Ammonium [µmol/l]
• Conversions– Conversion from µmol/kg µmol/l:• using ODV conversion Any µmol/kg to
Any µmol/l– Conversion from µg/l µmol/l: • Ammonium/14.00670 assuming it is
N µg/l
AMMONIUM DATA, BEFORE QC (2)
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AMMONIUM DATA, AFTER QC (1)• 4 994 vertical profiles
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AMMONIUM BEFORE AND AFTER QC
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AMMONIUM DATA, AFTER QC (2)• 4 994vertical profilesFlag value AMON
[µmol/l]
0 (No QC) 01 (Good) 23 119
3 (Doubtful) 974 (Bad) 507
6 (below detection limit)
2 223
Total 25 946
3 detection limits• 0.7 µmol/l• 0.96• 1.0
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AMON DISTRIBUTION
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Parameters Nb stations
Nb measureme
ntsPHOS (µmol/l) 6 594 40 196PHOW (µmol/kg) 78 998Phosphate (µg/l) 2501 38328Total 9 173 79 522
PHOSPHATE DATA, BEFORE QC (1)• 9173 vertical profiles, received as
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• Output parameter for product – Phosphate [µmol/l]
• Conversions– Conversion from µmol/kg µmol/l:• using ODV conversion Any µmol/kg
to Any µmol/l– Conversion from µg/l: • Phosphate/30.97376 assuming it is
P in µg/l
PHOSPHATE DATA, BEFORE QC (2)
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PHOSPHATE DATA, AFTER QC (1)• 8 832 vertical profiles
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PHOSPHATE BEFORE AND AFTER QC
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PHOSPHATE DATA, AFTER QC (2)• 8 832 vertical profilesFlag value PHOS
[µmol/l]
0 (No QC) 01 (Good) 76 170
3 (Doubtful) 884 (Bad) 307
6 (below detection limit)
361
Total 26 143
3 detection limits• 0.03 µmol/l• 0.07• 0.2
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PHOS DISTRIBUTION
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Parameters Nb stations
Nb measureme
ntsSLCA (µmol/l) 7 195 49 950SLCW (µmol/kg) 78 992Silicate (µg/l) 338 3 932Total 7 611 54 874
SILICATE DATA, BEFORE QC (1)• 7 611 vertical profiles, received as
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• Output parameter for product – Silicate [µmol/l]
• Conversions– Conversion from µmol/kg µmol/l:• using ODV conversion Any µmol/kg
to Any µmol/l– Conversion from µg/l µmol/l : • Silicate/28.08550 assuming it is Si
in µg/l
SILICATE DATA, BEFORE QC (2)
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SILICATE DATA, AFTER QC (1)• 7 071 vertical profiles
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SILICATE BEFORE AND AFTER QC
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SILICATE DATA, AFTER QC (2)• 7 071 vertical profilesFlag value SLCA
[µmol/l]
0 (No QC) 01 (Good) 48 251
3 (Doubtful) 6394 (Bad) 1 246
6 (below detection limit)
47
Total 50 183
2 detection limits• 0.1 µmol/l• 0.3
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SLCA DISTRIBUTION
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• Data coverage: for Ammonium, Silicate, Nitrate– What is a « reasonable » coverage for a product?– How to make the mask? New topography or
masked area?
• Data with QF=6 (value below detection): how to deel with? – put value to limit– put value to 0
• How to deal with estuaries?
DIVA PRODUCTS – PROBLEMS FACED