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Dataset Title:  Water geochemistry from surface samples collected along the Neuse River, Neuse
River Estuary, and Pamlico Sound in North Carolina between October and December
2016, following the passage of Hurricane Matthew
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Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_755923)
Information:  Summary ? | License ? | ISO 19115 | Metadata | Background (external link) | Subset | Files | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
   or a List of Values ?
   Maximum ?
 
 Sample_ID (unitless) ?          "HMATT0001"    "HMATT0479"
 Site_Location (unitless) ?          "NR0 Bottom"    "Trent River Union ..."
 Year (unitless) ?          2016    2017
 Month (unitless) ?          "03"    "12"
 Day (unitless) ?          "01"    "28"
 time2 (Time, unitless) ?          "10:00:00"    "9:57:40"
 Timezone (unitless) ?      
   - +  ?
 latitude (degrees_north) ?          34.94888    35.675008
  < slider >
 longitude (degrees_east) ?          -78.43603    -76.2006
  < slider >
 Temp (Temperature, Degrees Celsius) ?          9.51    22.9
 Salinity (PSU) ?          0.019999981    26.06999969
 GFF_IW (Milligrams (mg)) ?          33.636    40.354
 GFF_FW (Milligrams (mg)) ?          34.577    50.037
 GFF_Diff (Milligrams (mg)) ?          -0.478    15.094
 River_Dis (Cubic meters per second (m^3/s)) ?          8.41    1296.91
 Spec_Con (Microsiemens per Centimeter (uS/cm)) ?          0.0    35460.0
 DO (Milligrams per Liter (mg/L)) ?          0.279999971    17.09
 DO_Sat (Percentage) ?          3.199999809    181.7
 pH (unitless) ?          0.293055556    10.0
 TDS (Milligrams per Liter (mg/L)) ?          33.8    165.76
 VF (Milliliters (mL)) ?          20    400
 TSS (Milligrams per Liter (mg/L)) ?          -3.98    189.4
 POC (Micrograms per Liter (ug/L)) ?          215.3    53981.53
 PN (Micrograms per Liter (ug/L)) ?          30.09    5773.39
 CDOM (1/meters) ?          29.09    189.66
 DIC (Milligrams per Liter (mg/L)) ?          -0.02    22.34
 DOC (Milligrams per Liter (mg/L)) ?          3.87    18.76
 d13C_DOC (Permille (‰)) ?          -32.0    -24.94
 d13C_POC (Permille (‰)) ?          -33.48    -25.35
 d15N_PN (Permille (‰)) ?          -7.97    17.32
 C_to_N (unitless) ?          4.01    14.74
 SUVA254 (Liters per Milligram Carbon per Meter (L/(mgC m))) ?          0.43    5.44
 S275_295 (1/nm) ?          -0.0191    -0.0125
 S350_400 (1/nm) ?          -0.0216    -0.0122
 SR (unitless) ?          0.72    1.45
 Max_Fl_Em (Nanometers (nm)) ?          348    446
 Max_Fl (QSE) ?          20.0    16633.77
 B (QSE) ?          1.8    607.83
 T (QSE) ?          2.84    4067.95
 A (QSE) ?          11.43    2325.85
 C (QSE) ?          5.32    930.3
 M (QSE) ?          5.42    1776.33
 N (QSE) ?          4.67    2370.58
 FI (unitless) ?          1.11    1.67
 BIX (unitless) ?          0.4    1.28
 HIX (unitless) ?          0.85    14.4
 T_to_B_peak (unitless) ?          0.44    14.2
 T_to_M_peak (unitless) ?          0.26    3.63
 T_to_N_peak (unitless) ?          0.47    2.37
 T_to_C_peak (unitless) ?          0.17    7.56
 A_to_T_peak (unitless) ?          0.38    8.55
 A_to_C_peak (unitless) ?          1.34    2.96
 A_to_M_peak (unitless) ?          1.12    2.53
 M_to_C_peak (unitless) ?          0.63    2.64
 C_to_N_peak (unitless) ?          0.25    2.69
 
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  Sample_ID {
    String bcodmo_name "sample";
    String description "Osburn Lab Sample Identifier";
    String long_name "Sample ID";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P02/current/ACYC/";
    String units "unitless";
  }
  Site_Location {
    String bcodmo_name "site";
    String description "Project Site Identifier";
    String long_name "Site Location";
    String units "unitless";
  }
  Year {
    Int16 _FillValue 32767;
    Int16 actual_range 2016, 2017;
    String bcodmo_name "year";
    String description "4-digit year of Sample";
    String long_name "Year";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/";
    String units "unitless";
  }
  Month {
    String bcodmo_name "month";
    String description "2-digit month of Sample";
    String long_name "Month";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MNTHXXXX/";
    String units "unitless";
  }
  Day {
    String bcodmo_name "day";
    String description "2-digit day of Sample";
    String long_name "Day";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/DAYXXXXX/";
    String units "unitless";
  }
  time2 {
    String bcodmo_name "time";
    String description "Local Time of Sample (EST); fomrat: HH:MM:SS";
    String long_name "Time";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/";
    String units "unitless";
  }
  Timezone {
    String bcodmo_name "timezone";
    String description "Time zone (UTC miunus 5 hours)";
    String long_name "Timezone";
    String units "unitless";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range 34.94888, 35.675008;
    String axis "Y";
    String bcodmo_name "latitude";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Latitude of Sample Location; positive values = North";
    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 -78.43603, -76.2006;
    String axis "X";
    String bcodmo_name "longitude";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Longitude of Sample Location; positive values = East";
    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";
  }
  Temp {
    Float32 _FillValue NaN;
    Float32 actual_range 9.51, 22.9;
    String bcodmo_name "temperature";
    String description "Water Temperature";
    String long_name "Temperature";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/";
    String units "Degrees Celsius";
  }
  Salinity {
    Float64 _FillValue NaN;
    Float64 actual_range 0.019999981, 26.06999969;
    String bcodmo_name "sal";
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String description "Salinity of Water";
    String long_name "Sea Water Practical Salinity";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/";
    String units "PSU";
  }
  GFF_IW {
    Float32 _FillValue NaN;
    Float32 actual_range 33.636, 40.354;
    String bcodmo_name "weight";
    String description "Initial Weight of Glass Fiber Filter";
    String long_name "GFF IW";
    String units "Milligrams (mg)";
  }
  GFF_FW {
    Float32 _FillValue NaN;
    Float32 actual_range 34.577, 50.037;
    String bcodmo_name "weight";
    String description "Final Weight of Glass Fiber Filter";
    String long_name "GFF FW";
    String units "Milligrams (mg)";
  }
  GFF_Diff {
    Float32 _FillValue NaN;
    Float32 actual_range -0.478, 15.094;
    String bcodmo_name "weight";
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum -10.0;
    String description "The difference in Weight of the Glass Fiber Filters";
    String long_name "GFF Diff";
    String units "Milligrams (mg)";
  }
  River_Dis {
    Float32 _FillValue NaN;
    Float32 actual_range 8.41, 1296.91;
    String bcodmo_name "unknown";
    String description "River Discharge taken from USGS gaging sites along the Neuse River";
    String long_name "River Dis";
    String units "Cubic meters per second (m^3/s)";
  }
  Spec_Con {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 35460.0;
    String bcodmo_name "specific conductance";
    String description "Specific Conductance of Water";
    String long_name "Spec Con";
    String units "Microsiemens per Centimeter (uS/cm)";
  }
  DO {
    Float64 _FillValue NaN;
    Float64 actual_range 0.279999971, 17.09;
    String bcodmo_name "dissolved Oxygen";
    String description "Dissolved Oxygen";
    String long_name "DO";
    String units "Milligrams per Liter (mg/L)";
  }
  DO_Sat {
    Float64 _FillValue NaN;
    Float64 actual_range 3.199999809, 181.7;
    String bcodmo_name "O2sat";
    String description "Dissolved Oxygen Saturation";
    String long_name "DO Sat";
    String units "Percentage";
  }
  pH {
    Float64 _FillValue NaN;
    Float64 actual_range 0.293055556, 10.0;
    String bcodmo_name "pH";
    Float64 colorBarMaximum 9.0;
    Float64 colorBarMinimum 7.0;
    String description "pH of the Sample";
    String long_name "Sea Water Ph Reported On Total Scale";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PHXXZZXX/";
    String units "unitless";
  }
  TDS {
    Float32 _FillValue NaN;
    Float32 actual_range 33.8, 165.76;
    String bcodmo_name "unknown";
    String description "Total Dissolved Solids";
    String long_name "TDS";
    String units "Milligrams per Liter (mg/L)";
  }
  VF {
    Int16 _FillValue 32767;
    Int16 actual_range 20, 400;
    String bcodmo_name "vol_filt";
    String description "Volume of water Filtered through GF/F";
    String long_name "VF";
    String units "Milliliters (mL)";
  }
  TSS {
    Float32 _FillValue NaN;
    Float32 actual_range -3.98, 189.4;
    String bcodmo_name "unknown";
    String description "Total Suspended Solids (Difference of Weighed Filter/Volume Filtered)";
    String long_name "TSS";
    String units "Milligrams per Liter (mg/L)";
  }
  POC {
    Float32 _FillValue NaN;
    Float32 actual_range 215.3, 53981.53;
    String bcodmo_name "POC";
    String description "Particulate Organic Carbon";
    String long_name "Particulate Organic Carbon";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/";
    String units "Micrograms per Liter (ug/L)";
  }
  PN {
    Float32 _FillValue NaN;
    Float32 actual_range 30.09, 5773.39;
    String bcodmo_name "N";
    String description "Particulate Nitrogen";
    String long_name "PN";
    String units "Micrograms per Liter (ug/L)";
  }
  CDOM {
    Float32 _FillValue NaN;
    Float32 actual_range 29.09, 189.66;
    String bcodmo_name "absorption coefficient";
    String description "Absorbance coefficent of sample at 254 nanometers";
    String long_name "Chromophoric Dissolved Organic Material";
    String units "1/meters";
  }
  DIC {
    Float32 _FillValue NaN;
    Float32 actual_range -0.02, 22.34;
    String bcodmo_name "DIC";
    String description "Dissolved Inorganic Carbon";
    String long_name "DIC";
    String units "Milligrams per Liter (mg/L)";
  }
  DOC {
    Float32 _FillValue NaN;
    Float32 actual_range 3.87, 18.76;
    String bcodmo_name "DOC";
    String description "Dissolved Organic Carbon";
    String long_name "DOC";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CORGZZZX/";
    String units "Milligrams per Liter (mg/L)";
  }
  d13C_DOC {
    Float32 _FillValue NaN;
    Float32 actual_range -32.0, -24.94;
    String bcodmo_name "d13C";
    String description "Carbon Stable Isotope Ratio of Dissolved Organic Carbon";
    String long_name "D13 C DOC";
    String units "Permille (‰)";
  }
  d13C_POC {
    Float32 _FillValue NaN;
    Float32 actual_range -33.48, -25.35;
    String bcodmo_name "d13C";
    String description "Carbon Stable Isotope Ratio of Particulate Organic Carbon";
    String long_name "D13 C POC";
    String units "Permille (‰)";
  }
  d15N_PN {
    Float32 _FillValue NaN;
    Float32 actual_range -7.97, 17.32;
    String bcodmo_name "d15N";
    String description "Nitrogen Stable Isotope Ratio of Particulate Nitrogen";
    String long_name "D15 N PN";
    String units "Permille (‰)";
  }
  C_to_N {
    Float32 _FillValue NaN;
    Float32 actual_range 4.01, 14.74;
    String bcodmo_name "C_to_N";
    String description "Atomic Carbon to Nitrogen Ratio";
    String long_name "C To N";
    String units "unitless";
  }
  SUVA254 {
    Float32 _FillValue NaN;
    Float32 actual_range 0.43, 5.44;
    String bcodmo_name "absorbance";
    String description "Specific Ultraviolet Absorbance at 254 nanometers";
    String long_name "SUVA254";
    String units "Liters per Milligram Carbon per Meter (L/(mgC m))";
  }
  S275_295 {
    Float32 _FillValue NaN;
    Float32 actual_range -0.0191, -0.0125;
    String bcodmo_name "unknown";
    String description "Spectral Slope from 275 to 295 nanometers";
    String long_name "S275 295";
    String units "1/nm";
  }
  S350_400 {
    Float32 _FillValue NaN;
    Float32 actual_range -0.0216, -0.0122;
    String bcodmo_name "unknown";
    String description "Spectral Slope from 350 to 400 nanometers";
    String long_name "S350 400";
    String units "1/nm";
  }
  SR {
    Float32 _FillValue NaN;
    Float32 actual_range 0.72, 1.45;
    String bcodmo_name "unknown";
    String description "Slope Ratio (S275-295:S350-400)";
    String long_name "SR";
    String units "unitless";
  }
  Max_Fl_Em {
    Int16 _FillValue 32767;
    Int16 actual_range 348, 446;
    String bcodmo_name "fluorescence";
    String description "Fluorescence Emission Maximum";
    String long_name "Max Fl Em";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CPHLPM01/";
    String units "Nanometers (nm)";
  }
  Max_Fl {
    Float32 _FillValue NaN;
    Float32 actual_range 20.0, 16633.77;
    String bcodmo_name "fluorescence";
    String description "Maximum Fluorescence Value";
    String long_name "Max Fl";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CPHLPM01/";
    String units "QSE";
  }
  B {
    Float32 _FillValue NaN;
    Float32 actual_range 1.8, 607.83;
    String bcodmo_name "unknown";
    String description "Tyrosine-like, Protein-like Fluorescence peak";
    String long_name "B";
    String units "QSE";
  }
  T {
    Float32 _FillValue NaN;
    Float32 actual_range 2.84, 4067.95;
    String bcodmo_name "unknown";
    String description "Tryptophan-like, Protein-like Fluorescence peak";
    String long_name "T";
    String units "QSE";
  }
  A {
    Float32 _FillValue NaN;
    Float32 actual_range 11.43, 2325.85;
    String bcodmo_name "unknown";
    String description "Humic-like Fluorescence peak";
    String long_name "A";
    String units "QSE";
  }
  C {
    Float32 _FillValue NaN;
    Float32 actual_range 5.32, 930.3;
    String bcodmo_name "unknown";
    String description "Humic-like Fluorescence peak";
    String long_name "C";
    String units "QSE";
  }
  M {
    Float32 _FillValue NaN;
    Float32 actual_range 5.42, 1776.33;
    String bcodmo_name "unknown";
    String description "Marine Humic-like Fluorescence peak";
    String long_name "M";
    String units "QSE";
  }
  N {
    Float32 _FillValue NaN;
    Float32 actual_range 4.67, 2370.58;
    String bcodmo_name "unknown";
    String description "Unknown fluorescence peak";
    String long_name "N";
    String units "QSE";
  }
  FI {
    Float32 _FillValue NaN;
    Float32 actual_range 1.11, 1.67;
    String bcodmo_name "unknown";
    String description "Fluorescence Index";
    String long_name "FI";
    String units "unitless";
  }
  BIX {
    Float32 _FillValue NaN;
    Float32 actual_range 0.4, 1.28;
    String bcodmo_name "unknown";
    String description "Biological Index";
    String long_name "BIX";
    String units "unitless";
  }
  HIX {
    Float32 _FillValue NaN;
    Float32 actual_range 0.85, 14.4;
    String bcodmo_name "unknown";
    String description "Humic Index";
    String long_name "HIX";
    String units "unitless";
  }
  T_to_B_peak {
    Float32 _FillValue NaN;
    Float32 actual_range 0.44, 14.2;
    String bcodmo_name "unknown";
    String description "Ratio of T peak to B peak";
    String long_name "T To B Peak";
    String units "unitless";
  }
  T_to_M_peak {
    Float32 _FillValue NaN;
    Float32 actual_range 0.26, 3.63;
    String bcodmo_name "unknown";
    String description "Ratio of T peak to M peak";
    String long_name "T To M Peak";
    String units "unitless";
  }
  T_to_N_peak {
    Float32 _FillValue NaN;
    Float32 actual_range 0.47, 2.37;
    String bcodmo_name "unknown";
    String description "Ratio of T peak to N peak";
    String long_name "T To N Peak";
    String units "unitless";
  }
  T_to_C_peak {
    Float32 _FillValue NaN;
    Float32 actual_range 0.17, 7.56;
    String bcodmo_name "unknown";
    String description "Ratio of T peak to C peak";
    String long_name "T To C Peak";
    String units "unitless";
  }
  A_to_T_peak {
    Float32 _FillValue NaN;
    Float32 actual_range 0.38, 8.55;
    String bcodmo_name "unknown";
    String description "Ratio of A peak to T peak";
    String long_name "A To T Peak";
    String units "unitless";
  }
  A_to_C_peak {
    Float32 _FillValue NaN;
    Float32 actual_range 1.34, 2.96;
    String bcodmo_name "unknown";
    String description "Ratio of A peak to C peak";
    String long_name "A To C Peak";
    String units "unitless";
  }
  A_to_M_peak {
    Float32 _FillValue NaN;
    Float32 actual_range 1.12, 2.53;
    String bcodmo_name "unknown";
    String description "Ratio of A peak to M peak";
    String long_name "A To M Peak";
    String units "unitless";
  }
  M_to_C_peak {
    Float32 _FillValue NaN;
    Float32 actual_range 0.63, 2.64;
    String bcodmo_name "unknown";
    String description "Ratio of M peak to C peak";
    String long_name "M To C Peak";
    String units "unitless";
  }
  C_to_N_peak {
    Float32 _FillValue NaN;
    Float32 actual_range 0.25, 2.69;
    String bcodmo_name "unknown";
    String description "Ratio of C peak to N peak";
    String long_name "C To N Peak";
    String units "unitless";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson";
    String acquisition_description 
"Raw water surface samples were collected at sites along the Neuse River (NR),
Neuse River Estuary (NRE), and Pamlico Sound (PS) in North Carolina over a
period of three months, between October and December 2016, following the
passage of Hurricane Matthew on October 9, 2016. Sampling was conducted
approximately weekly across the NR, NRE, and PS sites. Riverine samples were
collected, in 1 L brown HDPE bottles, from bridge overpasses along the main-
stem of the NR at USGS gaged locations. Estuarine and sound samples were
collected, in 1 L opaque HDPE bottles and frozen for shipment to NCSU, by the
Neuse River Estuary Modeling and Monitoring Project (\\\"ModMon\\\") located at
the University of North Carolina at Chapel Hill's Institute of Marine Science
(UNC-IMS) in Morehead City, NC. Collection bottles were cleansed in a
detergent bath, rinsed profusely with Milli-Q ultrapure water, and left to air
dry before sampling. We conducted additional sampling in an area of freshwater
riparian wetlands between the last riverine site on the NR near Fort Barnwell,
NC and first estuarine site on the NRE at the Street's Ferry Bridge crossing
near Vanceboro, NC in March and October 2017.
 
Raw water samples were thawed at room temperature, and a known volume of water
was filtered through pre-combusted (at 45C for 5 hours) 0.7 m Whatman glass
fiber filters (GF/F) via vacuum. Prior to sample filtration, 150 mL of Milli-Q
water was used to rinse each filter. The filtrate was collected into 60 mL
polycarbonate bottles (detergent-washed and rinsed thoroughly with Milli-Q
water) for optical analyses and 40 mL amber-tinted borosilicate glass vials
(detergent-washed, rinsed thoroughly with Milli-Q water, and combusted at 45C
for 5 hours) for dissolved organic carbon (DOC) concentration and stable
carbon isotope (13C-DOC) analyses. Filtrate was stored at 4C until optical
measurements were made, generally within 48 hours. Filtrate for DOC analysis
was acidified to a pH of 2 with 85% phosphoric acid (H3PO4), then stored at 4C
until measurements were completed. GF/F filters were stored at -20C until
particulate organic carbon (POC) concentration and stable carbon isotopes
(13C-POC) could be measured.
 
Absorbance measurements were made with a Varian Cary 300UV spectrophotometer
in 1 cm quartz cuvettes, over a range of wavelengths (200-800 nm), and then
blank corrected using Milli-Q ultrapure water. (Osburn and Morris, 2003)
 
Fluorescence was measured on a Varian Eclipse spectrofluorometer under the
following conditions: excitation (Ex) wavelengths from 240 to 450 nm at 5 nm
intervals, emission (Em) wavelengths from 300 to 600 nm at 2 nm intervals. The
fluorescence data was concatenated into excitation-emission matrices (EEMs),
which display qualitative information about OM within a system, such as the
sources of organic matter (Coble, 2007).
 
Samples for DOC were immediately filtered through 0.2 um polyethersulfone
filters into glass vials, capped with Teflon-lined septa and stored without
headspace at 4C until analysis. DIC concentration ([DIC]) and delta-13C-DIC
value was measured on a OI Analytical TOC analyzer (Doctor et al., 2008)
 
To quantify DOC concentration, [DOC], samples were first sparged with
ultrapure Argon gas for 20 minutes to remove dissolved inorganic carbon (DIC).
Sparged samples were analyzed on an OI Analytical 1030D Aurora total organic
carbon analyzer, using wet chemical oxidation, coupled to a Thermo Delta V
Plus isotope ratio mass spectrometer (IRMS) to determine stable isotope
values, expressed as the standard delta notation, 13C-DOC (Osburn and St.
Jean, 2007). [DOC] were blank-corrected for ultra-pure Milli-Q water, then
calculated using a linear regression curve of known caffeine standards with
concentrations from 1 to 20 mg C per L. 13C-DOC values were blank corrected
and referenced to the Vienna Pee Dee Belemnite (VPDB) scale via a linear
regression of six caffeine (IAEA-600, -27.7 +/- 0.04\\u2030) and two sucrose
(IAEA-C6, -10.8 +/- 0.03\\u2030) International Atomic Energy Agency (IAEA)
standards. Precision for [DOC] and 13C-DOC values were +/- 0.4\\u2030 based on
reproducibility and calibration to sucrose standard. Milli-Q blanks were ran
every 10 samples for quality control and confidence of instrument.
 
Frozen GF/F filters were thawed, then dried at 60C for at least 24 hours in an
oven to prepare for measurement of particulate carbon and nitrogen
concentrations ([POC] and [PN] respectively) and the stable isotope of [POC],
13C-POC. Analysis was conducted on a Thermo Finnigan Flash Series 1112
Elemental Analyzer (EA), coupled to a Delta V IRMS via a Conflo III interface.
Calibration curves were made using acetanilide, L-glutamic acid (USGS-40),
caffeine (IAEA-600), oxalic acid (NIST-4990C), and sucrose (IAEA-C6)
standards. Weighed standards (0.200-0.600 mg) were placed in low blank tin
capsules (4 x 6mm), while dried GF/F filters were folded then placed in larger
low blank tin capsules (10 x 12mm). Carbon and nitrogen peak locations on the
EA, [POC], and [PN] were determined using acetanilide standards with percent
content values of 71.09% and 10.36% for carbon and nitrogen, respectively.
13C-POC for each sample was determined by converting the measured value to the
VPDB scale using a linear fit regression of the L-glutamic acid
(-26.39\\u2030), caffeine (-27.77\\u2030), oxalic acid (-17.8\\u2030), and
sucrose (-10.8\\u2030) standards. Similar to the precision for [DOC] and 13C-
DOC, 13C-POC values were +/- 0.4\\u2030 based on reproducibility and
calibration to known standards.
 
Synoptic measurements were collected using a handheld YSI probe and include
salinity, pH, temperature, dissolved oxygen concentration (DO), DO saturation
(%DO), Total Dissolved Solids (TDS), and Specific Conductivity (Spec. Cond.).";
    String awards_0_award_nid "734598";
    String awards_0_award_number "OCE-1706009";
    String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1706009";
    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 awards_1_award_nid "734603";
    String awards_1_award_number "OCE-1705972";
    String awards_1_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1705972";
    String awards_1_funder_name "NSF Division of Ocean Sciences";
    String awards_1_funding_acronym "NSF OCE";
    String awards_1_funding_source_nid "355";
    String awards_1_program_manager "Henrietta N Edmonds";
    String awards_1_program_manager_nid "51517";
    String cdm_data_type "Other";
    String comment 
"Hurricane Matthew Geochemical Data 
  PI: Chris Osburn (NCSU) 
  Co-PI: Hans Paerl (UNC) 
  Version date: 18-Feb-2019";
    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 "2019-02-18T18:18:06Z";
    String date_modified "2019-03-15T19:46:51Z";
    String defaultDataQuery "&amp;time&lt;now";
    String doi "10.1575/1912/bco-dmo.755923.1";
    Float64 Easternmost_Easting -76.2006;
    Float64 geospatial_lat_max 35.675008;
    Float64 geospatial_lat_min 34.94888;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -76.2006;
    Float64 geospatial_lon_min -78.43603;
    String geospatial_lon_units "degrees_east";
    String history 
"2021-10-16T03:03:31Z (local files)
2021-10-16T03:03:31Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_755923.html";
    String infoUrl "https://www.bco-dmo.org/dataset/755923";
    String institution "BCO-DMO";
    String instruments_0_acronym "IR Mass Spec";
    String instruments_0_dataset_instrument_description "13C-DOC, 13C-POC and 15N-PN. The isotope-ratio mass spectrometer (IRMS) allows the precise measurement of mixtures of naturally occurring isotopes. Reference CO2 and N2 gases are calibrated to NIST- or IAEA-traceable standards of known isotopic composition. Seawater DOC is calibrated with the Hansell Deep Sea Reference.";
    String instruments_0_dataset_instrument_nid "756112";
    String instruments_0_description "The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).";
    String instruments_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/LAB16/";
    String instruments_0_instrument_name "Isotope-ratio Mass Spectrometer";
    String instruments_0_instrument_nid "469";
    String instruments_0_supplied_name "Thermo Scientific Delta V Isotope Ratio Mass Spectrometer";
    String instruments_1_acronym "Fluorometer";
    String instruments_1_dataset_instrument_description "DOM Fluorescence. Calibrated with quinine sulfate solution after normalization to instrument’s water Raman peak.";
    String instruments_1_dataset_instrument_nid "756103";
    String instruments_1_description "A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.";
    String instruments_1_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/113/";
    String instruments_1_instrument_name "Fluorometer";
    String instruments_1_instrument_nid "484";
    String instruments_1_supplied_name "Cary Eclipse Spectrofluorometer";
    String instruments_2_acronym "TOC analyzer";
    String instruments_2_dataset_instrument_description "DOC & DIC. Calibrated with stock solutions of sodium bicarbonate (DIC) and caffeine (DOC). A certified reference material (CRM) for DIC is analyzed regularly as a check standard.";
    String instruments_2_dataset_instrument_nid "756107";
    String instruments_2_description "A unit that accurately determines the carbon concentrations of organic compounds typically by detecting and measuring its combustion product (CO2). See description document at: http://bcodata.whoi.edu/LaurentianGreatLakes_Chemistry/bs116.pdf";
    String instruments_2_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/LAB04/";
    String instruments_2_instrument_name "Total Organic Carbon Analyzer";
    String instruments_2_instrument_nid "652";
    String instruments_2_supplied_name "OI Analytical Aurora 1030 W Total Organic Carbon (TOC) Analyzer";
    String instruments_3_acronym "YSI ProPlus";
    String instruments_3_dataset_instrument_description "Temp, Salinity, pH, DO, DO%, TDS, Spec. Cond. Sensors calibrated with reference solutions prior to each use. DO and pH sensors are replaced and new sensors calibrated approximately every year.";
    String instruments_3_dataset_instrument_nid "756104";
    String instruments_3_description "The YSI Professional Plus handheld multiparameter meter provides for the measurement of a variety of combinations for dissolved oxygen, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, pH/ORP combination, ammonium (ammonia), nitrate, chloride and temperature. More information from the manufacturer.";
    String instruments_3_instrument_name "YSI Professional Plus Multi-Parameter Probe";
    String instruments_3_instrument_nid "666";
    String instruments_3_supplied_name "YSI Pro Plus multiparameter meter";
    String instruments_4_acronym "Spectrophotometer";
    String instruments_4_dataset_instrument_description "DOM absorbance. Instrument checks performed regularly.";
    String instruments_4_dataset_instrument_nid "756102";
    String instruments_4_description "An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples.";
    String instruments_4_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/LAB20/";
    String instruments_4_instrument_name "Spectrophotometer";
    String instruments_4_instrument_nid "707";
    String instruments_4_supplied_name "Cary UV 300 Spectrophotometer";
    String instruments_5_dataset_instrument_description "POC & PN. Calibrated with acetanilide.";
    String instruments_5_dataset_instrument_nid "756111";
    String instruments_5_description "Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material.";
    String instruments_5_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/LAB01/";
    String instruments_5_instrument_name "Elemental Analyzer";
    String instruments_5_instrument_nid "546339";
    String instruments_5_supplied_name "Thermo Scientific FlashEA 1112 Nitrogen and Carbon analyzer";
    String keywords "A_to_C_peak, A_to_M_peak, A_to_T_peak, bco, bco-dmo, biological, bix, C_to_N, C_to_N_peak, carbon, CDOM, chemical, chemistry, chromophoric, colored, commerce, con, d13, d13C_DOC, d13C_POC, d15, d15N_PN, data, dataset, day, density, department, dic, diff, dis, dissolved, dmo, DO_Sat, doc, earth, Earth Science > Oceans > Ocean Chemistry > pH, Earth Science > Oceans > Salinity/Density > Salinity, erddap, gff, GFF_Diff, GFF_FW, GFF_IW, hix, latitude, longitude, M_to_C_peak, management, material, matter, max, Max_Fl, Max_Fl_Em, month, ocean, oceanography, oceans, office, organic, particulate, peak, poc, practical, preliminary, reported, river, River_Dis, s275, S275_295, s350, S350_400, salinity, sample, Sample_ID, sat, scale, science, sea, sea_water_ph_reported_on_total_scale, sea_water_practical_salinity, seawater, site, Site_Location, spec, Spec_Con, suva254, T_to_B_peak, T_to_C_peak, T_to_M_peak, T_to_N_peak, tds, Temp, temperature, time, time2, timezone, total, tss, water, year";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "https://www.bco-dmo.org/dataset/755923/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/755923";
    Float64 Northernmost_Northing 35.675008;
    String param_mapping "{'755923': {'Lat': 'flag - latitude', 'Lon': 'flag - longitude'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/755923/parameters";
    String people_0_affiliation "North Carolina State University";
    String people_0_affiliation_acronym "NCSU MEAS";
    String people_0_person_name "Chris Osburn";
    String people_0_person_nid "51123";
    String people_0_role "Principal Investigator";
    String people_0_role_type "originator";
    String people_1_affiliation "University of North Carolina at Chapel Hill";
    String people_1_affiliation_acronym "UNC-Chapel Hill";
    String people_1_person_name "Hans Paerl";
    String people_1_person_nid "734605";
    String people_1_role "Co-Principal Investigator";
    String people_1_role_type "originator";
    String people_2_affiliation "Woods Hole Oceanographic Institution";
    String people_2_affiliation_acronym "WHOI BCO-DMO";
    String people_2_person_name "Shannon Rauch";
    String people_2_person_nid "51498";
    String people_2_role "BCO-DMO Data Manager";
    String people_2_role_type "related";
    String project "HMATT";
    String projects_0_acronym "HMATT";
    String projects_0_description 
"NSF abstract:
This project constitutes a rapid-response effort to investigate the effects of the extreme flooding event of Hurricane Matthew on coastal cycling of carbon and nutrient elements. The investigators aim to improve our understanding of how estuaries and coastal systems respond to extreme events by measuring carbon, nitrogen, and phosphorus loading into the Neuse River Estuary-Pamlico Sound (NRE-PS) coastal ecosystem. The NRE-PS is the urgent study site to examine resulting effects of Hurricane Matthew on coastal environments because it is downstream of the most intense flooding that occurred, and it is located on the North Atlantic \"hurricane track\", likely to be impacted by future extreme events. Furthermore, it is the focus of a long-term monitoring program in that system, the Neuse River Estuary Modeling and Monitoring Program (ModMon), which was initiated in 1993. That date is significant because it preceded a recent rise in Atlantic tropical cyclone activity and has been able to capture the biogeochemical and ecological effects of major storms that have impacted the NC coast, including Hurricanes Fran (1996), Floyd (1999), Isabel (2003), and Irene (2011). Incorporating intensive sampling of the Hurricane Matthew flooding in the context of these ongoing observations will enable a comparison of the material fluxes into this coastal environment resulting from a major tropical storm and provide a comparison with other coastal environments. Outcomes of this work will be communicated widely via existing outreach efforts of each investigator's research programs to local and regional resource managers, regulators, and other stakeholders. Nutrient loading will be critical information for stakeholders because the Neuse Estuary is an EPA 303(d) listed waterway impaired for nitrogen. Project results can aid in understanding the effects of extreme weather events on ecosystem disturbances and inform coastal carbon flux estimates.
Specific questions to be addressed in the context of this project include: 1) How do coastal carbon and nitrogen budgets respond to floodwaters from tropical storms and hurricanes? 2) What is the biological and photochemical reactivity of this material? The first question can be answered via a relatively short, yet intense, period of observations, such as is proposed here. The second question, which has potential teleconnections to climate in terms of carbon fluxes, food web responses, and other ecosystems processes, requires a longer duration study. However, Question 2 could be answered by further study of samples collected during a short and intense period of sampling proposed to answer Question 1. Work proposed in this project will result in estimates of fluxes and reservoirs of key constituents such as dissolved inorganic carbon (DIC), dissolved and particulate organic carbon and nitrogen (DOC, POC, DON, PON), and N and P nutrients, as well as chlorophyll biomass and pigment analyses.";
    String projects_0_end_date "2018-04";
    String projects_0_geolocation "Coastal waters of eastern North Carolina (Pamlico Sound) 35.09 N 76.52 W";
    String projects_0_name "RAPID: Collaborative Research: Carbon and nutrient responses in an estuarine-coastal complex impacted by floodwaters from Hurricane Matthew";
    String projects_0_project_nid "734599";
    String projects_0_start_date "2016-11";
    String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
    String publisher_type "institution";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 34.94888;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String subsetVariables "Timezone";
    String summary "Water geochemistry from surface samples collected along the Neuse River, Neuse River Estuary, and Pamlico Sound in North Carolina between October and December 2016, following the passage of Hurricane Matthew.";
    String title "Water geochemistry from surface samples collected along the Neuse River, Neuse River Estuary, and Pamlico Sound in North Carolina between October and December 2016, following the passage of Hurricane Matthew";
    String version "1";
    Float64 Westernmost_Easting -78.43603;
    String xml_source "osprey2erddap.update_xml() v1.3";
  }
}

 

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its selection constraints (external link).

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.


 
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