http://lod.bco-dmo.org/id/dataset/816347
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2020-06-22
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
POM concentrations for carbon, nitrogen, phosphorus, and chemical oxygen from GO-SHIP Line P18 Legs 1 and 2 in 2016 and 2017
2020-06-22
publication
2020-06-22
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-08-25
publication
https://doi.org/10.26008/1912/bco-dmo.816347.1
Adam Martiny
University of California-Irvine
principalInvestigator
Alyse A. Larkin
University of California-Irvine
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Martiny, A., Garcia, C., Lee, J., Moreno, A., Larkin, A. (2020) POM concentrations for carbon, nitrogen, phosphorus, and chemical oxygen from GO-SHIP Line P18 Legs 1 and 2 in 2016 and 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-06-22 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.816347.1 [access date]
POM concentrations for carbon, nitrogen, phosphorus, and chemical oxygen demand Dataset Description: <p>POM concentrations for carbon, nitrogen, phosphorus, and chemical oxygen from GO-SHIP Line P18 Legs 1 and 2 in 2016 and 2017.<br />
<br />
These data will be published in Moreno et al. (in press).</p> Methods and Sampling: POM sample collection
General equipment preparation in the lab before shipment included an HCl bath (1.0 M HCl overnight) and milli-Q rinse for the 8 L carboys, tubing, and filter holders. Additionally, the carboys were autoclaved. The 25 mm, 0.7 µm GF/F filters and aluminum foil used to wrap the filters were combusted (500 °C for 5 hours) in aluminum foil packets to remove any traces of carbon present. The forceps that came in contact with the samples were wiped with 70% ethanol before and between uses.
Seawater for the POM samples was collected from the onboard flow through underway system. The underway intake was located off the bow of the ship at a depth of approximately 5.3 m from the sea surface and the length of the pipe from the intake location to the output lab was 11.8 m. A 30 µm nylon mesh pre-filter was attached to the underway outlet for all standard samples to remove large plankton and particulates. Before sampling, the carboys used were rinsed twice with the pre-filtered underway seawater. Triplicate sampling occurred roughly at four-hour intervals with a shift forward of one hour each day. For example, if samples were taken at 01:00, 05:00, and 09:00 on one day, samples would be taken at 02:00, 06:00, and 10:00 the following day to avoid any diurnal bias. The water was vacuum filtered through combusted GF/F filters and the volume of seawater filtered was determined on a per station basis, ranging from 3-8 L. The volume was raised if the previous stations’ filtration times exhibited a decreasing trend and lowered if filtration time exhibited an increasing trend in an attempt to normalize the amount of collected material. The large sampling volume and initial rinsing steps limit the effect of a time delay from underway inlet to sampling station. Additional “total POM” samples were taken in the Southern Ocean by removing the 30 µm pre-filter during the rinse and sample collection steps. After filtration, all POP triplicates were rinsed with approximately 2-5 mL of a 0.17 M Na2SO4 solution to remove dissolved phosphorus. All POM samples were folded in half with the top sides toward each other, sealed inside pieces of combusted aluminum foil, and stored in a -20 C freezer until analysis.
POP assay
The POP data were obtained using an ash/hydrolysis method and comparing the samples to a set of standard phosphorus concentrations (Lomas et al., 2010). The sample filters were unfolded and placed face up into acid-bathed and combusted scintillation vials. Along with each set of samples, 10 different volumes (ranging 0 - 0.5 mL) of 0.1 M KH2PO4 solution were added to scintillation vials. 2 mL of a 0.017 M MgSO4 drying solution was added to each scintillation vial and then all vials were placed into an 80-90 °C oven overnight to dry. After drying, the vials were heated at 500 °C for 2 hours, then left to cool before adding 5 mL of 0.2 M HCl to each vial and being returned to the 80-90 °C oven for 30 minutes after being brought up to temperature. The solutions were then transferred to 15 mL glass centrifuge tubes (prepared in the same way as the scintillation vials). The sample vials were rinsed with 5 mL of milli-Q each, which was also added to the centrifuge tubes. 1 mL of a mixed reagent containing 2:5:1:2 parts Ammonium Molybdate ((NH4)6Mo7O24), 5.0 N H2SO4, Potassium Antimonyl Tartrate (C8H4K2O12Sb2), and Ascorbic Acid (C6H8O6) respectively was added to each centrifuge tube in 30-second intervals. Each of the sample tubes was centrifuged to isolate any glass fibers that could interfere with the absorbance reading. Lastly, after allowing the mixed reagent to react for exactly 30 min, the standards and samples were analyzed in 30-second intervals in a spectrophotometer at an 885 nm wavelength using a blank of ~0.1 M HCl solution and rinsing the cuvette with the blank solution between measurements.
POC/PON assay
POC and PON measurements were analyzed both in-lab at UCI and at the UC Santa Barbara Marine Science Institute Analytical Lab. An ANOVA analysis determined that the two methods did not produce significantly different results. The preparation for all samples was the same; the samples were each removed from their foil packets and placed into acid-bathed and combusted scintillation vials and dried in a 55 °C oven overnight. The scintillation vials were then placed in a desiccator containing a beaker of 12 M HCl overnight before being dried at 55 °C at least overnight once more. Samples sent to UCSB were then capped and shipped to the lab. Samples analyzed at UCI were packed into tin packets alongside Atropine (C17H23NO3) standards (ranging 0.2-1.5 mg) and measured using a Flash EA elemental analyzer.
PCOD assay
Particulate chemical oxygen demand was quantified using a modified assay for sea water (Moreno et al. 2020). GF/F filters for PCOD were dried at 55°C overnight, before oxidizing the filters plus 2ml milli-Q in HACH COD HR+ reagent vials (Product # 241915) at 150°C for 2 h. Mercuric sulfate was added to reagent vials mixture to prevent chloride ion interference. Next, silver chloride was precipitated out with an additional 92.1 μL of 9.5 M NaCl for consistent precipitation. Precipitate was removed by centrifuging for 30 min at 2500 rpm. The residual potassium dichromate was quantified by absorbance at 600 nm against HACH certified phthalate-based COD standards.
Note about data columns: Rep 1-6 indicate replicates collected separately at same timepoint.
Associated CLIVAR P18 underway and bottle datasets can be found on the National Centers for Environmental Information (NCEI) CLIVAR Repeat Section P18 page: https://www.nodc.noaa.gov/ocads/oceans/RepeatSections/clivar_p18.html
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1559002 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1559002
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1848576 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1848576
completed
Adam Martiny
University of California-Irvine
949-824-9713
Earth System Science & Ecology and Evolutionary Biology 3208 Croul Hall
Irvine
CA
92697
USA
amartiny@uci.edu
pointOfContact
Alyse A. Larkin
University of California-Irvine
(310) 699-0291
larkinsa@uci.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Sample
Station
Latitude
Longitude
ISO_DateTime_UTC
Volume
POC_Rep1
POC_Rep2
POC_Rep3
PON_Rep1
PON_Rep2
PON_Rep3
POP_Rep1
POP_Rep2
POP_Rep3
TPOC_Rep1
TPOC_Rep2
TPOC_Rep3
TPON_Rep1
TPON_Rep2
TPON_Rep3
TPOP_Rep1
TPOP_Rep2
TPOP_Rep3
PCOD_Rep_1
PCOD_Rep_2
PCOD_Rep_3
PCOD_Rep_4
PCOD_Rep_5
PCOD_Rep_6
CN FlashEA 1112 Elemental Analyzer (Thermo Scientific, Waltham, Massachusetts)
Genesys 10vis spectrophotometer (#840-208100, Thermo Scientific, Waltham, Massachusetts)
theme
None, User defined
sample identification
station
latitude
longitude
ISO_DateTime_UTC
sample description
particulate organic Carbon (POC)
particulate organic nitrogen
particulate organic phosphorus
No BCO-DMO term
featureType
BCO-DMO Standard Parameters
Elemental Analyzer
Spectrophotometer
instrument
BCO-DMO Standard Instruments
RB1606_leg1
RB1606_leg2
service
Deployment Activity
San Diego, CA, USA to Hanga Roa, Chile
Hanga Roa, Chile to Punta Arenas, Chile
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Convergence: RAISE: Linking the adaptive dynamics of plankton with emergent global ocean biogeochemistry
https://osprey.bco-dmo.org/project/764270
Convergence: RAISE: Linking the adaptive dynamics of plankton with emergent global ocean biogeochemistry
<p><em>NSF Award Abstract:</em><br />
Due to their sheer abundance and high activity, microorganisms have the potential to greatly influence how ecosystems are affected by changes in their environment. However, descriptions of microbial physiology and diversity are local and highly complex and thus rarely considered in Earth System Models. Thus, the researchers focus on a convergence research framework that can qualitatively and quantitatively integrate eco-evolutionary changes in microorganisms with global biogeochemistry. Here, the investigators will develop an approach that integrates the knowledge and tools of biologists, mathematicians, engineers, and geoscientists to understand the link between the ocean nutrient and carbon cycles. The integration of data and knowledge from diverse fields will provide a robust, biologically rich, and computationally efficient prediction for the variation in plankton resource requirements and the biogeochemical implications, addressing a fundamental challenge in ocean science. In addition, the project can serve as a road map for many other research groups facing a similar lack of convergence between biology and geoscience.</p>
<p>Traditionally, the cellular elemental ratios of Carbon, Nitrogen, and Phosphorus (C:N:P) of marine communities have been considered static at Redfield proportions but recent studies have demonstrated strong latitudinal variation. Such regional variation may have large - but poorly constrained - implications for marine biodiversity, biogeochemical functioning, and atmospheric carbon dioxide levels. As such, variations in ocean community C:N:P may represent an important biological feedback. Here, the investigators propose a convergence research framework integrating cellular and ecological processes controlling microbial resource allocations with an Earth System model. The approach combines culture experiments and omics measurements to provide a molecular understanding of cellular resource allocations. Using a mathematical framework of increasing complexity describing communicating, moving demes, the team will quantify the extent to which local mixing, environmental heterogeneity and evolution lead to systematic deviations in plankton resource allocations and C:N:P. Optimization tools from engineering science will be used to facilitate the quantitative integration of models and observations across a range of scales and complexity levels. Finally, global ocean modeling will enable understanding of how plankton resource use impacts Earth System processes. By integrating data and knowledge across fields, scales and complexity, the investigators will develop a robust link between variation in plankton C:N:P and global biogeochemical cycles.</p>
Ocean Stoichiometry
largerWorkCitation
project
eng; USA
oceans
San Diego, CA, USA to Hanga Roa, Chile; Hanga Roa, Chile to Punta Arenas, Chile
-116.0561
-100.3721
-69.9027
28.9071
2016-11-13
2017-01-28
0
BCO-DMO catalogue of parameters from POM concentrations for carbon, nitrogen, phosphorus, and chemical oxygen from GO-SHIP Line P18 Legs 1 and 2 in 2016 and 2017
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/816396.rdf
Name: Sample
Units: unitless
Description: <p>Sample identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/816397.rdf
Name: Station
Units: unitless
Description: <p>GO-SHIP station or "underway"</p>
http://lod.bco-dmo.org/id/dataset-parameter/816398.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/816399.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/816400.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time of collection (UTC) in ISO 8601 format yyyy-mm-ddTHH:MMZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/816401.rdf
Name: Volume
Units: liters (L)
Description: <p>Filtration volume</p>
http://lod.bco-dmo.org/id/dataset-parameter/816403.rdf
Name: POC_Rep1
Units: micromoles per liter (µM)
Description: <p>Particulate organic carbon < 30 µm for replicate 1</p>
http://lod.bco-dmo.org/id/dataset-parameter/816404.rdf
Name: POC_Rep2
Units: micromoles per liter (µM)
Description: <p>Particulate organic carbon < 30 µm for replicate 2</p>
http://lod.bco-dmo.org/id/dataset-parameter/816405.rdf
Name: POC_Rep3
Units: micromoles per liter (µM)
Description: <p>Particulate organic carbon < 30 µm for replicate 3</p>
http://lod.bco-dmo.org/id/dataset-parameter/816406.rdf
Name: PON_Rep1
Units: micromoles per liter (µM)
Description: <p>Particulate organic nitrogen < 30 µm for replicate 1</p>
http://lod.bco-dmo.org/id/dataset-parameter/816407.rdf
Name: PON_Rep2
Units: micromoles per liter (µM)
Description: <p>Particulate organic nitrogen < 30 µm for replicate 2</p>
http://lod.bco-dmo.org/id/dataset-parameter/816408.rdf
Name: PON_Rep3
Units: micromoles per liter (µM)
Description: <p>Particulate organic nitrogen < 30 µm for replicate 3</p>
http://lod.bco-dmo.org/id/dataset-parameter/816409.rdf
Name: POP_Rep1
Units: nanomoles per liter (nM)
Description: <p>Particulate organic phosphorus < 30 µm for replicate 1</p>
http://lod.bco-dmo.org/id/dataset-parameter/816410.rdf
Name: POP_Rep2
Units: nanomoles per liter (nM)
Description: <p>Particulate organic phosphorus < 30 µm for replicate 2</p>
http://lod.bco-dmo.org/id/dataset-parameter/816411.rdf
Name: POP_Rep3
Units: nanomoles per liter (nM)
Description: <p>Particulate organic phosphorus < 30 µm for replicate 3</p>
http://lod.bco-dmo.org/id/dataset-parameter/816412.rdf
Name: TPOC_Rep1
Units: micromoles per liter (µM)
Description: <p>Total particulate organic carbon for replicate 1</p>
http://lod.bco-dmo.org/id/dataset-parameter/816413.rdf
Name: TPOC_Rep2
Units: micromoles per liter (µM)
Description: <p>Total particulate organic carbon for replicate 2</p>
http://lod.bco-dmo.org/id/dataset-parameter/816414.rdf
Name: TPOC_Rep3
Units: micromoles per liter (µM)
Description: <p>Total particulate organic carbon for replicate 3</p>
http://lod.bco-dmo.org/id/dataset-parameter/816415.rdf
Name: TPON_Rep1
Units: micromoles per liter (µM)
Description: <p>Total particulate organic nitrogen for replicate 1</p>
http://lod.bco-dmo.org/id/dataset-parameter/816416.rdf
Name: TPON_Rep2
Units: micromoles per liter (µM)
Description: <p>Total particulate organic nitrogen for replicate 2</p>
http://lod.bco-dmo.org/id/dataset-parameter/816417.rdf
Name: TPON_Rep3
Units: micromoles per liter (µM)
Description: <p>Total particulate organic nitrogen for replicate 3</p>
http://lod.bco-dmo.org/id/dataset-parameter/816418.rdf
Name: TPOP_Rep1
Units: nanomoles per liter (nM)
Description: <p>Total particulate organic phosphorus for replicate 1</p>
http://lod.bco-dmo.org/id/dataset-parameter/816419.rdf
Name: TPOP_Rep2
Units: nanomoles per liter (nM)
Description: <p>Total particulate organic phosphorus for replicate 2</p>
http://lod.bco-dmo.org/id/dataset-parameter/816420.rdf
Name: TPOP_Rep3
Units: nanomoles per liter (nM)
Description: <p>Total particulate organic phosphorus for replicate 3</p>
http://lod.bco-dmo.org/id/dataset-parameter/816421.rdf
Name: PCOD_Rep_1
Units: micromoles per liter (µM)
Description: <p>Particulate chemical oxygen demand < 30 µm for replicate 1. Rep 1-6 indicate replicates collected separately at same timepoint.</p>
http://lod.bco-dmo.org/id/dataset-parameter/816422.rdf
Name: PCOD_Rep_2
Units: micromoles per liter (µM)
Description: <p>Particulate chemical oxygen demand < 30 µm for replicate 2. Rep 1-6 indicate replicates collected separately at same timepoint.</p>
http://lod.bco-dmo.org/id/dataset-parameter/816423.rdf
Name: PCOD_Rep_3
Units: micromoles per liter (µM)
Description: <p>Particulate chemical oxygen demand < 30 µm for replicate 3. Rep 1-6 indicate replicates collected separately at same timepoint.</p>
http://lod.bco-dmo.org/id/dataset-parameter/816424.rdf
Name: PCOD_Rep_4
Units: micromoles per liter (µM)
Description: <p>Particulate chemical oxygen demand < 30 µm for replicate 4. Rep 1-6 indicate replicates collected separately at same timepoint.</p>
http://lod.bco-dmo.org/id/dataset-parameter/816425.rdf
Name: PCOD_Rep_5
Units: micromoles per liter (µM)
Description: <p>Particulate chemical oxygen demand < 30 µm for replicate 5. Rep 1-6 indicate replicates collected separately at same timepoint.</p>
http://lod.bco-dmo.org/id/dataset-parameter/816426.rdf
Name: PCOD_Rep_6
Units: micromoles per liter (µM)
Description: <p>Particulate chemical oxygen demand < 30 µm for replicate 6. Rep 1-6 indicate replicates collected separately at same timepoint.</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
37672
https://darchive.mblwhoilibrary.org/bitstream/1912/26123/1/dataset-816347_line-p18-pom-concentrations__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.816347.1
download
onLine
dataset
POM sample collection
General equipment preparation in the lab before shipment included an HCl bath (1.0 M HCl overnight) and milli-Q rinse for the 8 L carboys, tubing, and filter holders. Additionally, the carboys were autoclaved. The 25 mm, 0.7 µm GF/F filters and aluminum foil used to wrap the filters were combusted (500 °C for 5 hours) in aluminum foil packets to remove any traces of carbon present. The forceps that came in contact with the samples were wiped with 70% ethanol before and between uses.
Seawater for the POM samples was collected from the onboard flow through underway system. The underway intake was located off the bow of the ship at a depth of approximately 5.3 m from the sea surface and the length of the pipe from the intake location to the output lab was 11.8 m. A 30 µm nylon mesh pre-filter was attached to the underway outlet for all standard samples to remove large plankton and particulates. Before sampling, the carboys used were rinsed twice with the pre-filtered underway seawater. Triplicate sampling occurred roughly at four-hour intervals with a shift forward of one hour each day. For example, if samples were taken at 01:00, 05:00, and 09:00 on one day, samples would be taken at 02:00, 06:00, and 10:00 the following day to avoid any diurnal bias. The water was vacuum filtered through combusted GF/F filters and the volume of seawater filtered was determined on a per station basis, ranging from 3-8 L. The volume was raised if the previous stations’ filtration times exhibited a decreasing trend and lowered if filtration time exhibited an increasing trend in an attempt to normalize the amount of collected material. The large sampling volume and initial rinsing steps limit the effect of a time delay from underway inlet to sampling station. Additional “total POM” samples were taken in the Southern Ocean by removing the 30 µm pre-filter during the rinse and sample collection steps. After filtration, all POP triplicates were rinsed with approximately 2-5 mL of a 0.17 M Na2SO4 solution to remove dissolved phosphorus. All POM samples were folded in half with the top sides toward each other, sealed inside pieces of combusted aluminum foil, and stored in a -20 C freezer until analysis.
POP assay
The POP data were obtained using an ash/hydrolysis method and comparing the samples to a set of standard phosphorus concentrations (Lomas et al., 2010). The sample filters were unfolded and placed face up into acid-bathed and combusted scintillation vials. Along with each set of samples, 10 different volumes (ranging 0 - 0.5 mL) of 0.1 M KH2PO4 solution were added to scintillation vials. 2 mL of a 0.017 M MgSO4 drying solution was added to each scintillation vial and then all vials were placed into an 80-90 °C oven overnight to dry. After drying, the vials were heated at 500 °C for 2 hours, then left to cool before adding 5 mL of 0.2 M HCl to each vial and being returned to the 80-90 °C oven for 30 minutes after being brought up to temperature. The solutions were then transferred to 15 mL glass centrifuge tubes (prepared in the same way as the scintillation vials). The sample vials were rinsed with 5 mL of milli-Q each, which was also added to the centrifuge tubes. 1 mL of a mixed reagent containing 2:5:1:2 parts Ammonium Molybdate ((NH4)6Mo7O24), 5.0 N H2SO4, Potassium Antimonyl Tartrate (C8H4K2O12Sb2), and Ascorbic Acid (C6H8O6) respectively was added to each centrifuge tube in 30-second intervals. Each of the sample tubes was centrifuged to isolate any glass fibers that could interfere with the absorbance reading. Lastly, after allowing the mixed reagent to react for exactly 30 min, the standards and samples were analyzed in 30-second intervals in a spectrophotometer at an 885 nm wavelength using a blank of ~0.1 M HCl solution and rinsing the cuvette with the blank solution between measurements.
POC/PON assay
POC and PON measurements were analyzed both in-lab at UCI and at the UC Santa Barbara Marine Science Institute Analytical Lab. An ANOVA analysis determined that the two methods did not produce significantly different results. The preparation for all samples was the same; the samples were each removed from their foil packets and placed into acid-bathed and combusted scintillation vials and dried in a 55 °C oven overnight. The scintillation vials were then placed in a desiccator containing a beaker of 12 M HCl overnight before being dried at 55 °C at least overnight once more. Samples sent to UCSB were then capped and shipped to the lab. Samples analyzed at UCI were packed into tin packets alongside Atropine (C17H23NO3) standards (ranging 0.2-1.5 mg) and measured using a Flash EA elemental analyzer.
PCOD assay
Particulate chemical oxygen demand was quantified using a modified assay for sea water (Moreno et al. 2020). GF/F filters for PCOD were dried at 55°C overnight, before oxidizing the filters plus 2ml milli-Q in HACH COD HR+ reagent vials (Product # 241915) at 150°C for 2 h. Mercuric sulfate was added to reagent vials mixture to prevent chloride ion interference. Next, silver chloride was precipitated out with an additional 92.1 μL of 9.5 M NaCl for consistent precipitation. Precipitate was removed by centrifuging for 30 min at 2500 rpm. The residual potassium dichromate was quantified by absorbance at 600 nm against HACH certified phthalate-based COD standards.
Note about data columns: Rep 1-6 indicate replicates collected separately at same timepoint.
Associated CLIVAR P18 underway and bottle datasets can be found on the National Centers for Environmental Information (NCEI) CLIVAR Repeat Section P18 page: https://www.nodc.noaa.gov/ocads/oceans/RepeatSections/clivar_p18.html
Specified by the Principal Investigator(s)
<p>BCO-DMO Data Manager Processing Notes:<br />
* Data submitted as Excel file&nbsp;P18-POM.xlsx extracted to csv file.<br />
* added a conventional header with dataset name, PI name, version date<br />
* modified parameter names to conform with BCO-DMO naming conventions (spaces, +, and - changed to underscores).&nbsp; Units in parentheses removed and added to Parameter Description metadata section.<br />
* blank values in this dataset are displayed as "nd" for "no data."&nbsp; nd is the default missing data identifier in the BCO-DMO system.<br />
* asterisk removed from Volume values for samples&nbsp;P18-134 and&nbsp;&nbsp;P18-136.&nbsp; Indicated additional notes taken (not provided).<br />
* Timestamp converted to ISO 8601 format yyyy-mm-ddTHH:MMZ</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
CN FlashEA 1112 Elemental Analyzer (Thermo Scientific, Waltham, Massachusetts)
CN FlashEA 1112 Elemental Analyzer (Thermo Scientific, Waltham, Massachusetts)
PI Supplied Instrument Name: CN FlashEA 1112 Elemental Analyzer (Thermo Scientific, Waltham, Massachusetts) Instrument Name: Elemental Analyzer Instrument Short Name: Instrument 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. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/
Genesys 10vis spectrophotometer (#840-208100, Thermo Scientific, Waltham, Massachusetts)
Genesys 10vis spectrophotometer (#840-208100, Thermo Scientific, Waltham, Massachusetts)
PI Supplied Instrument Name: Genesys 10vis spectrophotometer (#840-208100, Thermo Scientific, Waltham, Massachusetts) Instrument Name: Spectrophotometer Instrument Short Name:Spectrophotometer Instrument 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. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/
Cruise: RB1606_leg1
RB1606_leg1
Community Standard Description
International Council for the Exploration of the Sea
NOAA Ship Ronald H. Brown
vessel
RB1606_leg1
Brendan Carter
National Oceanic and Atmospheric Administration
http://dx.doi.org/10.7942/C21T0F
Report describing RB1606_leg1
Cruise: RB1606_leg2
RB1606_leg2
Community Standard Description
International Council for the Exploration of the Sea
NOAA Ship Ronald H. Brown
vessel
RB1606_leg2
Rolf Sonnerup
UW-NOAA Joint Institute for the Study of the Atmosphere and Ocean
http://dx.doi.org/10.7942/C21T0F
Report describing RB1606_leg2
Community Standard Description
International Council for the Exploration of the Sea
NOAA Ship Ronald H. Brown
vessel