GEOTRACES IDP2017 V2 Known Issues
Date: Monday 1 October 2018
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1. Standard deviation of Pb Isotopes measurement from GA06 (D361).
Observation:
Data standard deviation values are a factor 2 too large for: Pb_206_204_TD_RATIO_BOTTLE, Pb_206_207_TD_RATIO_BOTTLE and Pb_208_207_TD_RATIO_BOTTLE.
Workaround:
Divide the standard deviation by 2 to obtain correct values.
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2. Particulate Mn, Ni, Cu and Zn from GPpr01 (TAN0811).
Observation:
Data are a factor 1000 too large for the parameters: Mn_TP_CONC_PUMP, Ni_TP_CONC_PUMP, Zn_TP_CONC_PUMP.
Workaround:
Divide data values by 1000 to obtain correct data in correct units: Mn_TP_CONC_PUMP in [nmol/kg], Ni_TP_CONC_PUMP in [pmol/kg] and Zn_TP_CONC_PUMP in [pmol/kg]
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3. Data from Bottle Number 845336 from GA03 (KN204-1).
Observation:
Data from this bottle should be flagged '4'.
Workaround:
None.
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4. Tritium abundance from GA03 ( KN204-1, KN199-4) and GP16 (TN303).
Observation:
Negative Tritium (TRITIUM_D_CONC_BOTTLE) abundance data were flagged '3' at BODC. The data originator recommended flag '2' rather than flag '3'.
Workaround:
None.
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5. Cd isotopic composition GPpr07 (Line P 2012-13, Line P 2013-18, Line P 2014-19).
Observation:
Data are a factor 10 too low for the parameters: Cd_114_110_D_DELTA_BOTTLE and for the standard deviation.
Workaround:
Multiply data values of the measurement and the standard deviation by 10 to obtain correct data in correct unit: Cd_114_110_D_DELTA_BOTTLE in [per mil].
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6. Missing event GP16 (TN303).
Observation:
In-situ pump data from station 5 (BODC Bottles Number 1131131 , 1131134 , 1131137 , 1131140 , 1131143 , 1131146 , 1131149 and 1131152) are linked to the wrong station and time (merged with pump data from station 1).
Workaround:
The 'BODC Bottles Number' {1131131 , 1131134 , 1131137 , 1131140 , 1131143 , 1131146 , 1131149 and 1131152} have the following correct geographical coordinates:
Latitude [degrees_north]= -12.04483, Longitude [degrees_east]= 281.83317 and happening at Time= 2013-11-03T08:42:00Z.
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7. Dissolved Vanadium (V) from GP16 (TN303).
Observation:
Data are a factor 1000 too low for V_D_CONC_BOTTLE.
Workaround:
Multiply data values by 1000 to obtain correct data in correct unit: V_D_CONC_BOTTLE in [nmol/kg].
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8. Particulate biogenic silicon for large and small particles from GP16 (TN303).
Observation:
Data are a factor 1000 too large for bSi_LPT_CONC_PUMP, bSi_SPT_CONC_PUMP and their corresponding standard deviations.
Workaround:
Divide data values by 1000 to obtain correct data in correct units: bSi_LPT_CONC_PUMP in [nmol Si/kg] and bSi_SPT_CONC_PUMP in [nmol Si/kg]
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9. Beryllium-7 in aerosol samples from GP16 (TN303).
Observation:
Beryllium-7 aerosol data (Be_7_A_T_CONC_HIVOL) from cruise GP16 are incorrectly labelled as available. They are also linked to the wrong originator name. The originator of these data is Prof David Kadko.
Workaround:
This Geotraces data set will be available in future IDP. Meanwhile, they can be found in BCO-DMO
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10. Iron organic speciation from GA02 Leg2 (PE321).
Observation:
Iron organic speciation parameters: L1Fe_D_CONC_BOTTLE and L1Fe_D_LogK_BOTTLE from cruise GA02 Leg2, should be LFe_D_CONC_BOTTLE and LFe_D_LogK_BOTTLE respectively.
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11. CHLA_FLUOR_TP_CONC, Chl a_HPLC_TP_CONC and PHAEO_FLUOR_TP_CONC
Observation:
CHLA_FLUOR_T_CONC, Chl a_HPLC_T_CONC and PHAEO_FLUOR_T_CONC values are 1000 too low in the current version of the IDP.
Workaround:Multiply data values by 1000 to obtain correct data in correct units: CHLA_FLUOR_T_CONC_* in [ng/l], Chl a_HPLC_T_CONC_* in [ng/l],and PHAEO_FLUOR_T_CONC_* in [ng/l],
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