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| Dataset Title: | [GP16 Dissolved iron speciation] - Dissolved iron speciation from 2013 U.S. GEOTRACES Eastern Pacific Zonal Transect from R/V Thomas G. Thompson TN303 from October-December 2013 (U.S. GEOTRACES EPZT project, EPZT Fe Cu Co project) (U. S. GEOTRACES East Pacific Zonal Transect) 
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| Institution: | BCO-DMO (Dataset ID: bcodmo_dataset_668556) |
| Information: | Summary
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| FGDC
| ISO 19115
| Metadata
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Attributes {
s {
cruise_id {
String bcodmo_name "cruise_id";
String description "cruise identification";
String long_name "Cruise Id";
String units "unitless";
}
station {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 36;
String bcodmo_name "station";
String description "station number";
String long_name "Station";
String units "unitless";
}
GEOTRC_SAMPNO {
Int16 _FillValue 32767;
Int16 actual_range 2000, 10386;
String bcodmo_name "sample";
String description "Unique identifying number for US GEOTRACES samples. PI-supplied values were identical to those in the intermediate US GEOTRACES EPZT master file";
String long_name "GEOTRC SAMPNO";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P02/current/ACYC/";
String units "unitless";
}
latitude {
String _CoordinateAxisType "Lat";
Float64 _FillValue NaN;
Float64 actual_range -16.0006, -10.5003;
String axis "Y";
String bcodmo_name "latitude";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String description "Station latitude; north is positive: position when sampling cast was started (2 m sample = underway sample collected typically on approach to station)";
String ioos_category "Location";
String long_name "Latitude";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LATX/";
String standard_name "latitude";
String units "degrees_north";
}
longitude {
String _CoordinateAxisType "Lon";
Float64 _FillValue NaN;
Float64 actual_range -152.079, -77.3761;
String axis "X";
String bcodmo_name "longitude";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String description "Station longitude; east is positive; position when sampling cast was started (2 m sample = underway sample collected typically on approach to station)";
String ioos_category "Location";
String long_name "Longitude";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LONX/";
String standard_name "longitude";
String units "degrees_east";
}
depth {
String _CoordinateAxisType "Height";
String _CoordinateZisPositive "down";
Float64 _FillValue NaN;
Float64 actual_range 2.0, 5500.0;
String axis "Z";
String bcodmo_name "depth";
Float64 colorBarMaximum 8000.0;
Float64 colorBarMinimum -8000.0;
String colorBarPalette "TopographyDepth";
String description "sample collection depth below sea surface";
String ioos_category "Location";
String long_name "Depth";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/DEPH/";
String positive "down";
String standard_name "depth";
String units "m";
}
Fe_D_CONC_BOTTLE {
Float32 _FillValue NaN;
Float32 actual_range 0.05, 39.3;
String bcodmo_name "Fe";
String description "Dissolved iron (Fe) concentration value from bottle samples used in the speciation data interpretation. Data received from Mak Saito’s lab at Woods Hole Oceanography Institution; contact Saito for additional information. Units";
String long_name "Fe D CONC BOTTLE";
String units "nanomoles/liter (10^-9 M)";
}
L1Fe_D_CONC_BOTTLE {
String bcodmo_name "trace_metal_conc";
String description "concentration of dissolved iron-binding ligand from bottle samples with log K1 >= 12. \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L1 Fe D CONC BOTTLE";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/C035/";
String units "nanomoles/liter (10^-9 M)";
}
L1_FLAG {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 9;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "L1 quality flag";
String long_name "L1 FLAG";
String units "unitless";
}
L1_95pcnt_CI {
Float32 _FillValue NaN;
Float32 actual_range 0.01, 0.42;
String bcodmo_name "unknown";
String description "95% confidence limit of [L1] determined from data fit by ProMCC. Units \"nd\" = \"not detected\".";
String long_name "L1 95pcnt CI";
String units "nanomoles/liter (10^-9 M)";
}
L1Fe_D_LogK_BOTTLE {
String bcodmo_name "unknown";
String description "log conditional stability constant from bottle samples of L1 complexes with iron (logK^cond FeL1.Fe'). \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L1 Fe D Log K BOTTLE";
String units "No units; K1 has units of M-1";
}
log_K1_FLAG {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 9;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "K1 quality flag";
String long_name "Log K1 FLAG";
String units "unitless";
}
log_K1_95pcnt_CI {
Float32 _FillValue NaN;
Float32 actual_range 0.04, 0.78;
String bcodmo_name "unknown";
String description "95% confidence limit of log K1 determined from data fit by ProMCC. \"nd = no data\" used when maximum value of 13 assigned due to ProMCC returning values > 13 and large 95% CI indicating results outside of analytical window.";
String long_name "Log K1 95pcnt CI";
String units "No units; K1 has units of M-1";
}
L2Fe_D_CONC_BOTTLE {
String bcodmo_name "trace_metal_conc";
String description "concentration of dissolved iron-binding ligand with log K2 = 11-12 from bottle samples. \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L2 Fe D CONC BOTTLE";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/C035/";
String units "nanomoles/liter (10^-9 M)";
}
L2_FLAG {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 9;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "L2 quality flag";
String long_name "L2 FLAG";
String units "unitless";
}
L2_95pcnt_CI {
Float32 _FillValue NaN;
Float32 actual_range 0.03, 0.83;
String bcodmo_name "unknown";
String description "95% confidence limit of [L2] determined from data fit by ProMCC. Units \"nd\" = \"not detected\".";
String long_name "L2 95pcnt CI";
String units "nanomoles/liter (10^-9 M)";
}
L2Fe_D_LogK_BOTTLE {
String bcodmo_name "unknown";
String description "log conditional stability constant of L2 complexes with iron (logK^cond FeL2.Fe') from bottle samples. \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L2 Fe D Log K BOTTLE";
String units "No units; K2 has units of M^-1";
}
log_K2_FLAG {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 9;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "K2 quality flag";
String long_name "Log K2 FLAG";
String units "unitless";
}
log_K2_95pcnt_CI {
Float32 _FillValue NaN;
Float32 actual_range 0.03, 0.44;
String bcodmo_name "unknown";
String description "95% confidence limit of log K2 determined from data fit by ProMCC. \"nd\" = \"not detected\".";
String long_name "Log K2 95pcnt CI";
String units "No units; K2 has units of M^-1";
}
L3Fe_D_CONC_BOTTLE {
String bcodmo_name "trace_metal_conc";
String description "concentration of dissolved iron-binding ligand with log K3 = 10-11 from bottle samples. \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L3 Fe D CONC BOTTLE";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/C035/";
String units "nanomoles/liter (10^-9 M)";
}
L3_FLAG {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 2, 9;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "L3 quality flag";
String long_name "L3 FLAG";
String units "unitless";
}
L3_95pcnt_CI {
Float32 _FillValue NaN;
Float32 actual_range 0.07, 1.19;
String bcodmo_name "unknown";
String description "95% confidence limit of [L3] determined from data fit by ProMCC. Units \"nd\" = \"not detected\".";
String long_name "L3 95pcnt CI";
String units "nanomoles/liter (10^-9 M)";
}
L3Fe_D_LogK_BOTTLE {
String bcodmo_name "unknown";
String description "log conditional stability constant of L3 complexes with iron (logK^cond FeL3.Fe') from bottle samples. \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L3 Fe D Log K BOTTLE";
String units "No units; K3 has units of M^-1";
}
log_K3_FLAG {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 2, 9;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "K3 quality flag";
String long_name "Log K3 FLAG";
String units "unitless";
}
log_K3_95pcnt_CI {
Float32 _FillValue NaN;
Float32 actual_range 0.03, 0.39;
String bcodmo_name "unknown";
String description "95% confidence limit of log K3 determined from data fit by ProMCC. \"nd\" = \"not detected\".";
String long_name "Log K3 95pcnt CI";
String units "No units; K3 has units of M^-1";
}
Fe_D_CONC_FISH {
Float32 _FillValue NaN;
Float32 actual_range 0.03, 1.08;
String bcodmo_name "Fe";
String description "Dissolved iron (Fe) concentration value used in the speciation data interpretation; from Fish samples. Data received from Mak Saito’s lab at Woods Hole Oceanography Institution; contact Saito for additional information. Units";
String long_name "Fe D CONC FISH";
String units "nanomoles/liter (10^-9 M)";
}
L1Fe_D_CONC_FISH {
String bcodmo_name "trace_metal_conc";
String description "concentration of dissolved iron-binding ligand with log K1 = 12; from Fish samples. \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L1 Fe D CONC FISH";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/C035/";
String units "nanomoles/liter (10^-9 M)";
}
L1_FLAG_FISH {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 6;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "L1 quality flag";
String long_name "L1 FLAG FISH";
String units "unitless";
}
L1_95pcnt_CI_FISH {
Float32 _FillValue NaN;
Float32 actual_range 0.04, 0.31;
String bcodmo_name "unknown";
String description "95% confidence limit of [L1] determined from data fit by ProMCC. Units \"nd\" = \"not detected\".";
String long_name "L1 95pcnt CI FISH";
String units "nanomoles/liter (10^-9 M)";
}
L1Fe_D_LogK_FISH {
String bcodmo_name "unknown";
String description "log conditional stability constant of L1 complexes with iron (logK^cond FeL1.Fe'); from Fish samples. \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L1 Fe D Log K FISH";
String units "No units; K1 has units of M-1";
}
log_K1_FLAG_FISH {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 7;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "K1 quality flag";
String long_name "Log K1 FLAG FISH";
String units "unitless";
}
log_K1_95pcnt_CI_FISH {
Float32 _FillValue NaN;
Float32 actual_range 0.03, 0.4;
String bcodmo_name "unknown";
String description "95% confidence limit of log K1 determined from data fit by ProMCC. \"nd = no data\" used when maximum value of 13 assigned due to ProMCC returning values > 13 and large 95% CI indicating results outside of analytical window.";
String long_name "Log K1 95pcnt CI FISH";
String units "No units; K1 has units of M-1";
}
L2Fe_D_CONC_FISH {
String bcodmo_name "trace_metal_conc";
String description "concentration of dissolved iron-binding ligand with log K2 = 11-12; from Fish samples. \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L2 Fe D CONC FISH";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/C035/";
String units "nanomoles/liter (10^-9 M)";
}
L2_FLAG_FISH {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 6;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "L2 quality flag";
String long_name "L2 FLAG FISH";
String units "unitless";
}
L2_95pcnt_CI_FISH {
Float32 _FillValue NaN;
Float32 actual_range 0.1, 0.47;
String bcodmo_name "unknown";
String description "95% confidence limit of [L2] determined from data fit by ProMCC. Units \"nd\" = \"not detected\".";
String long_name "L2 95pcnt CI FISH";
String units "nanomoles/liter (10^-9 M)";
}
L2Fe_D_LogK_FISH {
String bcodmo_name "unknown";
String description "log conditional stability constant of L2 complexes with iron (logK^cond FeL2.Fe'); from Fish samples. \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L2 Fe D Log K FISH";
String units "No units; K2 has units of M^-1";
}
log_K2_FLAG_FISH {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 6;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "K2 quality flag";
String long_name "Log K2 FLAG FISH";
String units "unitless";
}
log_K2_95pcnt_CI_FISH {
Float32 _FillValue NaN;
Float32 actual_range 0.01, 0.32;
String bcodmo_name "unknown";
String description "95% confidence limit of log K2 determined from data fit by ProMCC. \"nd\" = \"not detected\".";
String long_name "Log K2 95pcnt CI FISH";
String units "No units; K2 has units of M^-1";
}
L3Fe_D_CONC_FISH {
String bcodmo_name "trace_metal_conc";
String description "concentration of dissolved iron-binding ligand with log K3 = 10-11; from Fish samples. \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L3 Fe D CONC FISH";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/C035/";
String units "nanomoles/liter (10^-9 M)";
}
L3_FLAG_FISH {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 2, 6;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "L3 quality flag";
String long_name "L3 FLAG FISH";
String units "unitless";
}
L3_95pcnt_CI_FISH {
Float32 _FillValue NaN;
Float32 actual_range 0.35, 0.45;
String bcodmo_name "unknown";
String description "95% confidence limit of [L3] determined from data fit by ProMCC. Units \"nd\" = \"not detected\".";
String long_name "L3 95pcnt CI FISH";
String units "nanomoles/liter (10^-9 M)";
}
L3Fe_D_LogK_FISH {
String bcodmo_name "unknown";
String description "log conditional stability constant of L3 complexes with iron (logK^cond FeL3.Fe'); from Fish samples. \"not_detected\" used when this parameter was not determined in sample analyses.";
String long_name "L3 Fe D Log K FISH";
String units "No units; K3 has units of M^-1";
}
log_K3_FLAG_FISH {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 2, 6;
String bcodmo_name "q_flag";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String description "K3 quality flag";
String long_name "Log K3 FLAG FISH";
String units "unitless";
}
log_K3_95pcnt_CI_FISH {
Float32 _FillValue NaN;
Float32 actual_range 0.06, 0.22;
String bcodmo_name "unknown";
String description "95% confidence limit of log K3 determined from data fit by ProMCC. \"nd\" = \"not detected\".";
String long_name "Log K3 95pcnt CI FISH";
String units "No units; K3 has units of M^-1";
}
GEOTRC_EVENTNO {
Int16 _FillValue 32767;
Int16 actual_range 4009, 4467;
String bcodmo_name "event";
String description "Unique identifying number for US GEOTRACES sampling event. Added by BCO-DMO from the intermediate US GEOTRACES EPZT master file.";
String long_name "GEOTRC EVENTNO";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/";
String units "unitless";
}
GEOTRC_INSTR {
String bcodmo_name "instrument";
String description "Unique identifying number for US GEOTRACES instruments. Added by BCO-DMO from the intermediate US GEOTRACES EPZT master file.";
String long_name "GEOTRC INSTR";
String units "unitless";
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.38298632e+9, 1.38726444e+9;
String axis "T";
String bcodmo_name "ISO_DateTime_UTC";
String description "Event start date/time (UTC) formatted to ISO8601 standard. T indicates start of time string; Z indicates UTC. Calculated from original date and time fields. Values were added from the intermediate US GEOTRACES EPZT master file (see Processing Description). Formatted as YYYY-mm-ddTHH:MM:SS.ssZ";
String ioos_category "Time";
String long_name "ISO DATETIME UTC START EVENT";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/";
String source_name "ISO_DATETIME_UTC_START_EVENT";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String time_precision "1970-01-01T00:00:00.00Z";
String units "seconds since 1970-01-01T00:00:00Z";
}
}
NC_GLOBAL {
String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson,.odvTxt";
String acquisition_description
"Sample collection and filtering: Water column samples were collected by the
U.S. GEOTRACES sampling team from 24 modified 12-L Teflon-coated GO-FLO
samplers (General Oceanics) deployed on the GEOTRACES clean CTD rosette system
(Cutter and Bruland 2012). The U.S. GEOTRACES sampling team filtered the
samples through 0.2 \\u00b5m Supor Acropak filter cartridges (Pall) inside the
U.S. GEOTRACES clean-air laboratory van. Near-surface samples (~2 m depth)
were collected underway either on approach or leaving each station using the
Ken Bruland lab towfish, \\u201cGeoFish\\u201d, deployed to collect surface
samples from outside the wake of the ship. Seawater from the GeoFish was
pumped directly into the Bruland lab clean air laboratory van and filtered
through 0.2 \\u00b5m Supor Acropak filter cartridges.
Filtered seawater samples for iron speciation (organic complexation) were
collected in 500 mL acid-cleaned Nalgene narrow-mouth fluorinated high-density
polyethylene (FPE) bottles that had been filled with Milli-Q for at least two
weeks after acid cleaning and rinsed three times with filtered seawater prior
to sample collection (Buck et al. 2012). All filtered seawater samples for
dissolved iron speciation were frozen at -20 \\u00baC shipboard by the sampling
team and shipped to the University of South Florida for laboratory-based
analyses post cruise.
Dissolved iron speciation (organic complexation) analyses: Dissolved iron
speciation (organic complexation) was analyzed using competitive ligand
exchange- adsorptive cathodic stripping voltammetry (CLE-AdCSV) with
salicylaldoxime as the added competing ligand (Buck et al. 2015), modified
from the original Rue and Bruland (1995) method. A borate-ammonium buffer was
added to all vials, for a final pH of 8.2 (NBS scale; Buck et al. 2007, 2012).
Dissolved iron additions of 0 to 10 nM were used in the titrations, for a
total of at least 15 points in each titration. These dissolved iron additions
were chosen to match those of the U.S. GEOTRACES North Atlantic dataset and
include additional datapoints within this range to allow higher resolution
data within titrations (Buck et al. 2016). Deposition times of 90 to 600 s
were applied to the analyses, with typically longer deposition times for
deeper water column samples. CLE-AdCSV analyses were performed on
Bioanalytical Systems (BASi) Controlled Growth Mercury Electrodes (static
mercury drop setting, size 14) with Epsilon e2 (BASi) electrochemical
analyzers. There are no reference samples available for iron speciation
measurements of iron in seawater, though this method has been shown to compare
well with other labs and techniques in GEOTRACES intercalibration exercises
(Buck et al. 2012, 2016).
FLAG:\\u00a0The standard Ocean Data View qualifying flags were used (reference
all flags
at\\u00a0[https://www.bodc.ac.uk/data/codes_and_formats/odv_format/](\\\\\"https://www.bodc.ac.uk/data/codes_and_formats/odv_format/\\\\\")):
1: Good Value: Good quality data value that is not part of any identified
malfunction and has been verified as consistent with real phenomena during the
quality control process. [Used when data were shown to be reproducible]
2: Probably Good Value: Data value that is probably consistent with real
phenomena but this is unconfirmed or data value forming part of a malfunction
that is considered too small to affect the overall quality of the data object
of which it is a part. [Used when the reported value reflects analysis of a
single or unverified replicate]
3: Probably Bad Value: Data value recognized as unusual during quality control
that forms part of a feature that is probably inconsistent with real
phenomena. [Not used]
4: Bad Value: An obviously erroneous data value. [Not used]
5: Changed Value: Data value adjusted during quality control. [Not used]
6: Value Below Detection Limit: The level of the measured phenomenon was too
small to be quantified by the technique employed to measure it. The
accompanying value is the detection limit for the technique or zero if that
value is unknown. [We report \\u201cnot_detected\\u201d rather than zero or a
detection limit value for this case]
7: Value in Excess: The level of the measured phenomenon was too large to be
quantified by the technique employed to measure it. The accompanying value is
the measurement limit for the technique. [Not used]
8: Interpolated Value: This value has been derived by interpolation from other
values in the data object. [Not used]
9: Missing Value: The data value is missing. Any accompanying value will be a
magic number representing absent data. [Not used]";
String awards_0_award_nid "648147";
String awards_0_award_number "OCE-1441969";
String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1441969";
String awards_0_funder_name "NSF Division of Ocean Sciences";
String awards_0_funding_acronym "NSF OCE";
String awards_0_funding_source_nid "355";
String awards_0_program_manager "Henrietta N Edmonds";
String awards_0_program_manager_nid "51517";
String cdm_data_type "Other";
String comment
"Iron Speciation Profiles (organic complexation)
from GEOTRACES-EPZT cruise TN303 [PRELIMINARY DATA]
PI: K. Buck (USF)
version: 2016-12-07
NOTE: Bottle and Fish samples reported in separate columns (Fish are to far right)";
String Conventions "COARDS, CF-1.6, ACDD-1.3";
String creator_email "info@bco-dmo.org";
String creator_name "BCO-DMO";
String creator_type "institution";
String creator_url "https://www.bco-dmo.org/";
String data_source "extract_data_as_tsv version 2.3 19 Dec 2019";
String date_created "2016-12-05T20:51:19Z";
String date_modified "2020-03-24T16:03:35Z";
String defaultDataQuery "&time<now";
String doi "10.1575/1912/bco-dmo.718433";
Float64 Easternmost_Easting -77.3761;
Float64 geospatial_lat_max -10.5003;
Float64 geospatial_lat_min -16.0006;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -77.3761;
Float64 geospatial_lon_min -152.079;
String geospatial_lon_units "degrees_east";
Float64 geospatial_vertical_max 5500.0;
Float64 geospatial_vertical_min 2.0;
String geospatial_vertical_positive "down";
String geospatial_vertical_units "m";
String history
"2024-11-23T17:20:40Z (local files)
2024-11-23T17:20:40Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_668556.html";
String infoUrl "https://www.bco-dmo.org/dataset/668556";
String institution "BCO-DMO";
String instruments_0_acronym "CTD Sea-Bird";
String instruments_0_dataset_instrument_nid "668563";
String instruments_0_description "Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.";
String instruments_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/130/";
String instruments_0_instrument_name "CTD Sea-Bird";
String instruments_0_instrument_nid "447";
String instruments_1_acronym "GO-FLO Teflon TM";
String instruments_1_dataset_instrument_description "Used for water sample collections";
String instruments_1_dataset_instrument_nid "668565";
String instruments_1_description "GO-FLO Teflon-lined Trace Metal free sampling bottles are used for collecting water samples for trace metal, nutrient and pigment analysis. The GO-FLO sampling bottle is designed specifically to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths.";
String instruments_1_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/30/";
String instruments_1_instrument_name "GO-FLO Teflon Trace Metal Bottle";
String instruments_1_instrument_nid "533";
String instruments_1_supplied_name "24 modified 12-L Teflon-coated GO-FLO samplers (General Oceanics)";
String instruments_2_acronym "GeoFish";
String instruments_2_dataset_instrument_nid "668564";
String instruments_2_description "The GeoFish towed sampler is a custom designed near surface (";
String instruments_2_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/31/";
String instruments_2_instrument_name "GeoFish Towed near-Surface Sampler";
String instruments_2_instrument_nid "549";
String instruments_3_acronym "BASi EC-epsilon 2";
String instruments_3_dataset_instrument_description "For CLE-AdCSV analyses";
String instruments_3_dataset_instrument_nid "668562";
String instruments_3_description
"The Bioanalytical Systems EC epsilon is a family of potentiostat/galvanostats for electrochemistry. The most basic epsilon instrument can be used for standard techniques, as well as chronopotentiometry for materials characterization (e.g., characterization of transition metal complexes by cyclic voltammetry and controlled potential electrolysis, or of biosensors by cyclic voltammetry and constant potential amperometry). Pulse, square wave, and stripping techniques can be added by a software upgrade, and a second channel can be added by a hardware upgrade.
http://www.basinc.com/products/ec/epsilon/";
String instruments_3_instrument_name "BASi EC-epsilon 2 Autoanalyzer";
String instruments_3_instrument_nid "689";
String instruments_3_supplied_name "BASi EC-epsilon 2 Autoanalyzer";
String instruments_4_acronym "BASI CGME";
String instruments_4_dataset_instrument_description "For CLE-AdCSV analyses";
String instruments_4_dataset_instrument_nid "668561";
String instruments_4_description
"Bioanalytical Systems (BASi) Mercury drop electrodes are generated by the BASi Controlled Growth Mercury Electrode (CGME) in three modes:
DME (Dropping Mercury Electrode) - mercury is allowed to flow freely from the reservoir down the capillary and so the growth of the mercury drop and its lifetime is controlled by gravity. (The optional 100 um capillary is recommended for this mode.)
SMDE (Static Mercury Drop Electrode) - the drop size is determined by the length of time for which the fast-response capillary valve is opened, and the drop is dislodged by a drop knocker. The dispense/knock timing is microprocessor-controlled and is typically coordinated with the potential pulse or square-wave waveform. This mode can also used to generate the Hanging Mercury Drop Electrode required for stripping experiments.
CGME (Controlled Growth Mercury Electrode) - the mercury drop is grown by a series of pulses that open the capillary valve. The number of pulses, their duration, and their frequency can be varied by PC control, providing great flexibility in both the drop size and its rate of growth. This CGME mode can be used for both polarographic and stripping experiments.
http://www.basinc.com/products/ec/cgme.php";
String instruments_4_instrument_name "BASi Controlled Growth Mercury Electrode";
String instruments_4_instrument_nid "690";
String instruments_4_supplied_name "BASi Controlled Growth Mercury Electrode";
String keywords "95pcnt, bco, bco-dmo, biological, bottle, chemical, conc, cruise, cruise_id, data, dataset, datetime, depth, dmo, erddap, event, eventno, Fe_D_CONC_BOTTLE, Fe_D_CONC_FISH, fish, flag, geotrc, GEOTRC_EVENTNO, GEOTRC_INSTR, GEOTRC_SAMPNO, instr, iso, L1_95pcnt_CI, L1_95pcnt_CI_FISH, L1_FLAG, L1_FLAG_FISH, L1Fe_D_CONC_BOTTLE, L1Fe_D_CONC_FISH, L1Fe_D_LogK_BOTTLE, L1Fe_D_LogK_FISH, L2, L2_95pcnt_CI, L2_95pcnt_CI_FISH, L2_FLAG, L2_FLAG_FISH, L2Fe_D_CONC_BOTTLE, L2Fe_D_CONC_FISH, L2Fe_D_LogK_BOTTLE, L2Fe_D_LogK_FISH, L3, L3_95pcnt_CI, L3_95pcnt_CI_FISH, L3_FLAG, L3_FLAG_FISH, L3Fe_D_CONC_BOTTLE, L3Fe_D_CONC_FISH, L3Fe_D_LogK_BOTTLE, L3Fe_D_LogK_FISH, latitude, log, log_K1_95pcnt_CI, log_K1_95pcnt_CI_FISH, log_K1_FLAG, log_K1_FLAG_FISH, log_K2_95pcnt_CI, log_K2_95pcnt_CI_FISH, log_K2_FLAG, log_K2_FLAG_FISH, log_K3_95pcnt_CI, log_K3_95pcnt_CI_FISH, log_K3_FLAG, log_K3_FLAG_FISH, longitude, management, oceanography, office, preliminary, sampno, start, station, time";
String license "https://www.bco-dmo.org/dataset/668556/license";
String metadata_source "https://www.bco-dmo.org/api/dataset/668556";
Float64 Northernmost_Northing -10.5003;
String param_mapping "{'668556': {'lat': 'master - latitude', 'depth': 'flag - depth', 'lon': 'master - longitude', 'ISO_DATETIME_UTC_START_EVENT': 'master - time'}}";
String parameter_source "https://www.bco-dmo.org/mapserver/dataset/668556/parameters";
String people_0_affiliation "University of South Florida";
String people_0_affiliation_acronym "USF";
String people_0_person_name "Kristen N. Buck";
String people_0_person_nid "51624";
String people_0_role "Principal Investigator";
String people_0_role_type "originator";
String people_1_affiliation "Woods Hole Oceanographic Institution";
String people_1_affiliation_acronym "WHOI BCO-DMO";
String people_1_person_name "Nancy Copley";
String people_1_person_nid "50396";
String people_1_role "BCO-DMO Data Manager";
String people_1_role_type "related";
String project "U.S. GEOTRACES EPZT,EPZT Fe Cu Co";
String projects_0_acronym "U.S. GEOTRACES EPZT";
String projects_0_description
"From the NSF Award Abstract
The mission of the International GEOTRACES Program (www.geotraces.org), of which the U.S. chemical oceanography research community is a founding member, is \"to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions\" (GEOTRACES Science Plan, 2006). In the United States, ocean chemists are currently in the process of organizing a zonal transect in the eastern tropical South Pacific (ETSP) from Peru to Tahiti as the second cruise of the U.S.GEOTRACES Program. This Pacific section includes a large area characterized by high rates of primary production and particle export in the eastern boundary associated with the Peru Upwelling, a large oxygen minimum zone that is a major global sink for fixed nitrogen, and a large hydrothermal plume arising from the East Pacific Rise. This particular section was selected as a result of open planning workshops in 2007 and 2008, with a final recommendation made by the U.S.GEOTRACES Steering Committee in 2009. It is the first part of a two-stage plan that will include a meridional section of the Pacific from Tahiti to Alaska as a subsequent expedition.
This award provides funding for management of the U.S.GEOTRACES Pacific campaign to a team of scientists from the University of Southern California, Old Dominion University, and the Woods Hole Oceanographic Institution. The three co-leaders will provide mission leadership, essential support services, and management structure for acquiring the trace elements and isotopes samples listed as core parameters in the International GEOTRACES Science Plan, plus hydrographic and nutrient data needed by participating investigators. With this support from NSF, the management team will (1) plan and coordinate the 52-day Pacific research cruise described above; (2) obtain representative samples for a wide variety of trace metals of interest using conventional CTD/rosette and GEOTRACES Sampling Systems; (3) acquire conventional JGOFS/WOCE-quality hydrographic data (CTD, transmissometer, fluorometer, oxygen sensor, etc) along with discrete samples for salinity, dissolved oxygen (to 1 uM detection limits), plant pigments, redox tracers such as ammonium and nitrite, and dissolved nutrients at micro- and nanomolar levels; (4) ensure that proper QA/QC protocols are followed and reported, as well as fulfilling all GEOTRACES Intercalibration protocols; (5) prepare and deliver all hydrographic-type data to the GEOTRACES Data Center (and US data centers); and (6) coordinate cruise communications between all participating investigators, including preparation of a hydrographic report/publication.
Broader Impacts: The project is part of an international collaborative program that has forged strong partnerships in the intercalibration and implementation phases that are unprecedented in chemical oceanography. The science product of these collective missions will enhance our ability to understand how to interpret the chemical composition of the ocean, and interpret how climate change will affect ocean chemistry. Partnerships include contributions to the infrastructure of developing nations with overlapping interests in the study area, in this case Peru. There is a strong educational component to the program, with many Ph.D. students carrying out thesis research within the program.
Figure 1. The 2013 GEOTRACES EPZT Cruise Track. [click on the image to view a larger version]";
String projects_0_end_date "2015-06";
String projects_0_geolocation "Eastern Tropical Pacific - Transect from Peru to Tahiti";
String projects_0_name "U.S. GEOTRACES East Pacific Zonal Transect";
String projects_0_project_nid "499723";
String projects_0_project_website "https://www.geotraces.org/";
String projects_0_start_date "2012-06";
String projects_1_acronym "EPZT Fe Cu Co";
String projects_1_description
"Description from NSF award abstract:
Dissolved iron (Fe), copper (Cu), and cobalt (Co) are essential elements for phytoplankton growth which in turn influences the marine carbon cycle; however, despite this important role, the cycling, distribution, and bioavailability of these bioactive elements remains poorly understood. For example, strong organic ligands influence bioavailability and solubility, but it is unclear how interactions change throughout the water column under variable conditions. Recognizing a need for this data, researchers from the Bermuda Institute of Ocean Sciences, Woods Hole Oceanographic Institution, and Scripps Institute of Oceanography will measure the organic complexation of dissolved Fe, Cu, and Co as well as total dissolved Co concentrations during the 2013 GEOTRACES cruise which will transect the coastal upwelling zone off Peru, an intense oxygen minimum zone, the East Pacific Rise hydrothermal plume, and the oligotrophic waters near Tahiti. This study will result in a significant dataset on the speciation of these bioactive elements throughout the water column which will help assess the relationships between dissolved Fe, Cu, and Co distributions and ligand concentration gradients and will likely reveal large chemical gradients over this dynamic oceanographic region. As regards dissolved Co concentrations, these measurements should provide new insights on the marine biogeochemistry of the element, especially in relation to oxygen minimum zones and hydrothermal plumes.";
String projects_1_end_date "2016-02";
String projects_1_geolocation "East Pacific";
String projects_1_name "US GEOTRACES Pacific Section: Measurement of the organic complexation of dissolved iron, copper and cobalt, and total dissolved cobalt";
String projects_1_project_nid "648113";
String projects_1_start_date "2013-03";
String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
String publisher_type "institution";
String sourceUrl "(local files)";
Float64 Southernmost_Northing -16.0006;
String standard_name_vocabulary "CF Standard Name Table v55";
String subsetVariables "cruise_id";
String summary
"Dissolved iron-binding organic ligand concentrations and conditional stability
constants from surface GeoFish and GO-FLO water column samples collected in
2013 during the U.S. GEOTRACES GP16 cruise in the Eastern Pacific between Peru
and Tahiti on the R.V. Thomas G. Thompson, \\u00a0cruise TN303.
The FISH and BOTTLE data have been split into separate columns as per
GEOTRACES Parameter Naming Conventions.The FISH data are to the far right.
* To access the data with the FISH and BOTTLE data merged, see:\\u00a0[http://data.bco-dmo.org/jg/serv/BCO/GEOTRACES/EPZT/Fe_spec_EPZT_joined.html0%7Bdir=data.bco-dmo.org/jg/dir/BCO/GEOTRACES/EPZT/,info=data.bco-dmo.org/jg/info/BCO/GEOTRACES/EPZT/Fe_speciation%7D](\\\\http://data.bco-dmo.org/jg/serv/BCO/GEOTRACES/EPZT/Fe_spec_EPZT_joined.html0%7Bdir=data.bco-dmo.org/jg/dir/BCO/GEOTRACES/EPZT/,info=data.bco-dmo.org/jg/info/BCO/GEOTRACES/EPZT/Fe_speciation%7D\\\\)";
String time_coverage_end "2013-12-17T07:14:00.00Z";
String time_coverage_start "2013-10-28T18:52:00.00Z";
String title "[GP16 Dissolved iron speciation] - Dissolved iron speciation from 2013 U.S. GEOTRACES Eastern Pacific Zonal Transect from R/V Thomas G. Thompson TN303 from October-December 2013 (U.S. GEOTRACES EPZT project, EPZT Fe Cu Co project) (U.S. GEOTRACES East Pacific Zonal Transect)";
String version "1";
Float64 Westernmost_Easting -152.079;
String xml_source "osprey2erddap.update_xml() v1.3";
}
}
Data Access Protocol (DAP) and its
selection constraints.
The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.
Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names,
followed by a collection of
constraints (e.g., variable<value),
each preceded by '&' (which is interpreted as "AND").
For details, see the tabledap Documentation.