http://lod.bco-dmo.org/id/dataset/884424
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
2022-11-29
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Bottle data from R/V Endeavor cruise EN665 in the Gulf of Maine, conducted April 7-12, 2021
2022-11-29
publication
2022-11-29
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-12-02
publication
https://doi.org/10.26008/1912/bco-dmo.884424.1
Adam V. Subhas
Woods Hole Oceanographic Institution
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: Subhas, A. V. (2022) Bottle data from R/V Endeavor cruise EN665 in the Gulf of Maine, conducted April 7-12, 2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-11-29 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.884424.1 [access date]
Bottle Data for EN665 Gulf of Maine Dataset Description: Methods and Sampling: <p>These data were collected on R/V Endeavor cruise EN665 from three stations in the Wilkinson and Jordan Basins of the Gulf of Maine (approximately 42.6 North, 69.6 West, depth 0-260 meters). Water samples were collected using Niskin bottles on the CTD rosette.</p>
<p><strong>Nutrients:</strong><br />
Nutrient samples were collected directly from Niskin bottles using clean 60-milliliter (mL) plastic syringes. Samples were then passed through a 25-millimeter (mm) 0.2-micron filter (either polycarbonate or PTFE) into clean, 60-mL HDPE bottles. Bottles were rinsed 3 times with filtered water before filling and capping. Bottles were then frozen at -20 degrees Celsius for approximately 30 days until analysis. Analyses were performed at the WHOI Nutrient Analytical Facility on a SEAL Analytical AA3 HR following established procedures.</p>
<p><strong>Total Alkalinity, Dissolved Inorganic Carbon (DIC), and d13C-DIC:</strong><br />
Samples for total alkalinity (TA), dissolved inorganic carbon (DIC), and d13C-DIC were collected simultaneously. Water from the Niskins was passed through a 0.45-micron cartridge filter and all bubbles were removed from the line. Ground-glass stoppered 250-mL were rinsed 3 times with flowing, filtered seawater and then filled. Each sample bottle was left to overflow for approximately double the amount of time it took to fill the bottle. Excess water was gently dumped out to leave a ~2-3 mL headspace below the ground glass fitting. Following collection, samples were poisoned with 100 microliters of saturated mercuric chloride solution. Bottles were sealed with a greased stopper (Apiezon-L). A rubber band was placed over the stopper to ensure sample closure. Samples were stored cool and in the dark prior to analysis at the Woods Hole Oceanographic Institution.</p>
<p>DIC and d13C analyses were performed first immediately after opening the bottle. DIC and d13C-DIC were determined simultaneously using an Apollo AS-D1 analyzer connected to a Picarro G-2121i cavity ringdown system on a 5 mL sample of seawater. Samples were run in at least triplicate and calibrated against seawater Certified Reference Materials. Isotopic values were calibrated against an in-house seawater standard that was intercalibrated against known solid materials (NBS-19, IAEA-C2, and NBS-20). Intercalibration was performed on the same Picarro instrument using an Automate-Liaison front-end unit. Total alkalinity was determined using an open-system Gran titration on 5-mL samples in triplicate, using a Metrohm 805 Dosimat and a robotic Titrosampler, calibrated against seawater Certified Reference Materials.</p>
<p><strong>pH:</strong><br />
pH samples were measured on the total scale with pure meta cresol purple indicator (mCP) at 25C +/- 0.1C on an Agilent 8453 spectrophotometer. A subset of the samples (18 out of 30 total) was used to derive the R-value perturbation by the indicator, for which all of the samples were then corrected.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1923998 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1923998
completed
Adam V. Subhas
Woods Hole Oceanographic Institution
508-289-2399
266 Woods Hole Rd. MS#8
Woods Hole
MA
02543
USA
asubhas@whoi.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise_ID
STNNBR
LATITUDE
LONGITUDE
CASTNO
ISO_DateTime_Local
ISO_DateTime_UTC
DEPTH
CTDTMP
CTDSAL
CTDOXY
NO2_NO3
NH4
PHSPHT
SILCAT
NITRIT
ALKALI
ALKALI_SD
ALKALI_W_FLAG
PH_TOT
PH_TOT_SD
PH_TMP
TCARBN
TCARBN_SD
TCARBN_W_FLAG
DELC13
DELC13_SD
DELC13_W_FLAG
SIGMA_T
CTDOXY_SAT
XMISS
FLUOR
PAR
Apollo AS-D1 DIC and d13C-DIC analyzer unit
Picarro G-2121i Cavity Ringdown Spectrometer
SeaBird SBE-911+
Niskin bottles
SEAL Analytical AA3 HR
Titrosampler
theme
None, User defined
Cruise identfier
station
latitude
longitude
cast
ISO_DateTime_Local
ISO_DateTime_UTC
depth
water temperature at measurement depth
salinity
dissolved Oxygen
nitrate plus nitrite
Ammonium
phosphate
Silicate, Si(OH)4, silicic acid
Nitrite
total alkalinity (TA)
quality flag
pH
dissolved inorganic Carbon
13C to 12C ratio in DIC
sigma-t
O2 saturation
transmission
fluorescence
PAR
featureType
BCO-DMO Standard Parameters
Apollo AS-D1 DIC and d13C-DIC Analyzer
Cavity enhanced absorption spectrometers
CTD Sea-Bird SBE 911plus
Metrohm 805 Dosimat
Niskin bottle
Seal Analytical AutoAnalyser 3HR
Titrator
instrument
BCO-DMO Standard Instruments
EN665
service
Deployment Activity
Gulf of Maine
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.
Biogenic Calcium Carbonate Solubilities and Reaction Rates by Lab and Field Saturometry
https://osprey.bco-dmo.org/project/882852
Biogenic Calcium Carbonate Solubilities and Reaction Rates by Lab and Field Saturometry
<p><em>NSF Award Abstract:</em><br />
The ocean actively exchanges carbon dioxide with the atmosphere and is currently absorbing about a third of the carbon dioxide humans emit through fossil fuel burning. Because carbon dioxide is acidic, ocean pH drops as it takes up carbon dioxide, a process known as "ocean acidification". Ocean acidification negatively affects the health of marine ecosystems by making it harder for organisms to grow their calcium carbonate shells. Yet, the dissolution of these calcium carbonate shells in the deep ocean helps neutralize the carbon dioxide we emit as humans. The extent to which this process takes place is a function of the solubility of marine calcium carbonate. This project will evaluate the temperature and pressure effects on the stability of biologically produced calcium carbonate minerals. The results from this study will allow us to better predict where, how much, and how fast, carbon dioxide will be neutralized and stored in the world's ocean. We will also investigate the ways in which small changes in the chemical composition of calcium carbonate shells - such as the incorporation of magnesium - influence their stability. This project will also conduct micro-computed tomography scans of microorganisms' shells to better visualize them in 3-dimensional detail. We will print these 3-dimensional scans for use as educational tools in the classroom and in the Woods Hole Visitor Center. In addition, professional development workshops for high school teacher on ocean acidification and the importance of marine calcification will be held yearly.</p>
<p>The ocean is the ultimate repository for most of anthropogenic carbon dioxide emissions, which in turn is making ocean chemistry less favorable for biogenic carbonate precipitation through the process of ocean acidification. Ocean acidification decreases seawater pH but dissolution of primarily biogenic carbonate minerals has the capacity to buffer this acidification and over thousands of years push whole-ocean pH and atmospheric carbon dioxide to their preindustrial values. Unfortunately, the relationship between seawater chemistry, carbonate mineral solubility, and the kinetics that govern carbonate dissolution and precipitation are not fully understood. Currently, it is clear that relationships based solely on inorganic calcite are insufficient to describe the cycling of biogenic calcites in the ocean. This project will conduct a systematic determination of the solubilities and reaction kinetics of the three most common biogenic carbonates (coccoliths, foraminifera, and pteropods), both in the laboratory and in the field, using spectrophotometric pH saturometry. The saturometer incubates calcium carbonate with seawater in a closed system. During each run, the change in pH within the saturometer traces the progression of calcium carbonate dissolution/precipitation as the system approaches equilibrium. The saturometer therefore has the potential to link mechanistic interpretations of mineral dissolution/precipitation kinetics to measurements of solubility in a single experiment. The spectrophotometric pH method uses well-calibrated indicator dyes, allows solubility and data to be tied to modern pH calibrations and reference materials, and can be used in the laboratory or deployed on a hydrowire at sea. Field experiments will be conducted at multiple depths, elucidating in-situ controls on solubility and kinetics, as well as the sensitivity of biogenic calcite solubility to temperature and pressure. Experiments will be conducted from both sides of equilibrium, allowing for robust determinations of inorganic and biogenic solubilities.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
Calcite Saturometer
largerWorkCitation
project
eng; USA
oceans
Gulf of Maine
-69.6683
-67.8296833
42.3413667
43.4936333
2021-04-07
2021-04-12
0
BCO-DMO catalogue of parameters from Bottle data from R/V Endeavor cruise EN665 in the Gulf of Maine, conducted April 7-12, 2021
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/884559.rdf
Name: Cruise_ID
Units: unitless
Description: <p>cruise identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/884560.rdf
Name: STNNBR
Units: unitless
Description: <p>station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/884561.rdf
Name: LATITUDE
Units: decimal degrees North
Description: <p>latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/884562.rdf
Name: LONGITUDE
Units: decimal degrees East
Description: <p>longitude (negative values = West)</p>
http://lod.bco-dmo.org/id/dataset-parameter/884563.rdf
Name: CASTNO
Units: unitless
Description: <p>cast number</p>
http://lod.bco-dmo.org/id/dataset-parameter/884564.rdf
Name: ISO_DateTime_Local
Units: unitless
Description: <p>date and time in local time zone (US Eastern) in ISO 8601 format</p>
http://lod.bco-dmo.org/id/dataset-parameter/884565.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>date and time (UTC) in ISO 8601 format</p>
http://lod.bco-dmo.org/id/dataset-parameter/884566.rdf
Name: DEPTH
Units: meters (m)
Description: <p>depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/884567.rdf
Name: CTDTMP
Units: degrees Celsius
Description: <p>CTD temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/884568.rdf
Name: CTDSAL
Units: unitless
Description: <p>CTD salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/884569.rdf
Name: CTDOXY
Units: micromoles per kilogram
Description: <p>CTD oxygen</p>
http://lod.bco-dmo.org/id/dataset-parameter/884570.rdf
Name: NO2_NO3
Units: micromoles per kilogram
Description: <p>nitrate + nitrite</p>
http://lod.bco-dmo.org/id/dataset-parameter/884571.rdf
Name: NH4
Units: micromoles per kilogram
Description: <p>ammonia</p>
http://lod.bco-dmo.org/id/dataset-parameter/884572.rdf
Name: PHSPHT
Units: micromoles per kilogram
Description: <p>phosphate</p>
http://lod.bco-dmo.org/id/dataset-parameter/884573.rdf
Name: SILCAT
Units: micromoles per kilogram
Description: <p>silicate</p>
http://lod.bco-dmo.org/id/dataset-parameter/884574.rdf
Name: NITRIT
Units: micromoles per kilogram
Description: <p>nitrite</p>
http://lod.bco-dmo.org/id/dataset-parameter/884575.rdf
Name: ALKALI
Units: micromoles per kilogram
Description: <p>total alkalinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/884576.rdf
Name: ALKALI_SD
Units: micromoles per kilogram
Description: <p>total alkaliniy measurement standard deviation</p>
http://lod.bco-dmo.org/id/dataset-parameter/884577.rdf
Name: ALKALI_W_FLAG
Units: unitless
Description: <p>total alkalinity quality flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/884578.rdf
Name: PH_TOT
Units: unitless
Description: <p>pH, total scale at surface pressure and measurement temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/884579.rdf
Name: PH_TOT_SD
Units: unitless
Description: <p>pH, total scale measurement standard deviation</p>
http://lod.bco-dmo.org/id/dataset-parameter/884580.rdf
Name: PH_TMP
Units: degrees Celsius
Description: <p>pH, total scale measurement temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/884581.rdf
Name: TCARBN
Units: micromoles per kilogram
Description: <p>dissolved inorganic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/884582.rdf
Name: TCARBN_SD
Units: micromoles per kilogram
Description: <p>dissolved inorganic carbon measurement standard deviation</p>
http://lod.bco-dmo.org/id/dataset-parameter/884583.rdf
Name: TCARBN_W_FLAG
Units: unitless
Description: <p>dissolved inorganic carbon quality flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/884584.rdf
Name: DELC13
Units: permil vs. PDB
Description: <p>delta-13C of DIC</p>
http://lod.bco-dmo.org/id/dataset-parameter/884585.rdf
Name: DELC13_SD
Units: permil vs. PDB
Description: <p>delta-13C of DIC measurement standard deviation</p>
http://lod.bco-dmo.org/id/dataset-parameter/884586.rdf
Name: DELC13_W_FLAG
Units: unitless
Description: <p>delta-13C of DIC quality flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/884587.rdf
Name: SIGMA_T
Units: kilograms per cubic meter
Description: <p>density at surface pressure</p>
http://lod.bco-dmo.org/id/dataset-parameter/884588.rdf
Name: CTDOXY_SAT
Units: micromoles per kilogram
Description: <p>CTD oxygen saturation value</p>
http://lod.bco-dmo.org/id/dataset-parameter/884589.rdf
Name: XMISS
Units: percent
Description: <p>CTD beam transmission</p>
http://lod.bco-dmo.org/id/dataset-parameter/884590.rdf
Name: FLUOR
Units: milligrams per cubic meter
Description: <p>CTD fluorescence</p>
http://lod.bco-dmo.org/id/dataset-parameter/884591.rdf
Name: PAR
Units: unitless
Description: <p>CTD photosynthetically active radiation</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
7038
https://darchive.mblwhoilibrary.org/bitstream/1912/29545/1/dataset-884424_bottle-data-en665-gulf-maine__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.884424.1
download
onLine
dataset
<p>These data were collected on R/V Endeavor cruise EN665 from three stations in the Wilkinson and Jordan Basins of the Gulf of Maine (approximately 42.6 North, 69.6 West, depth 0-260 meters). Water samples were collected using Niskin bottles on the CTD rosette.</p>
<p><strong>Nutrients:</strong><br />
Nutrient samples were collected directly from Niskin bottles using clean 60-milliliter (mL) plastic syringes. Samples were then passed through a 25-millimeter (mm) 0.2-micron filter (either polycarbonate or PTFE) into clean, 60-mL HDPE bottles. Bottles were rinsed 3 times with filtered water before filling and capping. Bottles were then frozen at -20 degrees Celsius for approximately 30 days until analysis. Analyses were performed at the WHOI Nutrient Analytical Facility on a SEAL Analytical AA3 HR following established procedures.</p>
<p><strong>Total Alkalinity, Dissolved Inorganic Carbon (DIC), and d13C-DIC:</strong><br />
Samples for total alkalinity (TA), dissolved inorganic carbon (DIC), and d13C-DIC were collected simultaneously. Water from the Niskins was passed through a 0.45-micron cartridge filter and all bubbles were removed from the line. Ground-glass stoppered 250-mL were rinsed 3 times with flowing, filtered seawater and then filled. Each sample bottle was left to overflow for approximately double the amount of time it took to fill the bottle. Excess water was gently dumped out to leave a ~2-3 mL headspace below the ground glass fitting. Following collection, samples were poisoned with 100 microliters of saturated mercuric chloride solution. Bottles were sealed with a greased stopper (Apiezon-L). A rubber band was placed over the stopper to ensure sample closure. Samples were stored cool and in the dark prior to analysis at the Woods Hole Oceanographic Institution.</p>
<p>DIC and d13C analyses were performed first immediately after opening the bottle. DIC and d13C-DIC were determined simultaneously using an Apollo AS-D1 analyzer connected to a Picarro G-2121i cavity ringdown system on a 5 mL sample of seawater. Samples were run in at least triplicate and calibrated against seawater Certified Reference Materials. Isotopic values were calibrated against an in-house seawater standard that was intercalibrated against known solid materials (NBS-19, IAEA-C2, and NBS-20). Intercalibration was performed on the same Picarro instrument using an Automate-Liaison front-end unit. Total alkalinity was determined using an open-system Gran titration on 5-mL samples in triplicate, using a Metrohm 805 Dosimat and a robotic Titrosampler, calibrated against seawater Certified Reference Materials.</p>
<p><strong>pH:</strong><br />
pH samples were measured on the total scale with pure meta cresol purple indicator (mCP) at 25C +/- 0.1C on an Agilent 8453 spectrophotometer. A subset of the samples (18 out of 30 total) was used to derive the R-value perturbation by the indicator, for which all of the samples were then corrected.</p>
Specified by the Principal Investigator(s)
<p><strong>Data Quality Flags:</strong><br />
Quality flags were applied according to&nbsp;the definitions described in Jiang et al., 2022, as follows:<br />
0 = interpolated data;<br />
1 = not evaluated / quality unknown;<br />
2 = acceptable;<br />
3 = questionable;<br />
4 = known bad;<br />
6 = median of replicates;<br />
9 = missing value.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- replaced "NaN" with "nd" ("no data");<br />
- converted date to ISO 8601 format;<br />
- added column for date-time in UTC;<br />
- renamed fields to comply with BCO-DMO naming conventions;<br />
- converted longitude values from positive degrees West to negative degrees East;<br />
- replaced the wrong cruise ID of EN669 with EN665.</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
Apollo AS-D1 DIC and d13C-DIC analyzer unit
Apollo AS-D1 DIC and d13C-DIC analyzer unit
PI Supplied Instrument Name: Apollo AS-D1 DIC and d13C-DIC analyzer unit PI Supplied Instrument Description:DIC-d13C was determined using an Apollo AS-D1 DIC and d13C-DIC analyzer unit, connected to a Picarro G-2121i Cavity Ringdown Spectrometer. Instrument Name: Apollo AS-D1 DIC and d13C-DIC Analyzer Instrument Short Name:Apollo AS-D1 Instrument Description: The AS-D1 is an instrument designed to prepare natural water samples for Dissolved Inorganic Carbon (DIC) and delta13C analysis and provide the user with the analyses outputs. It has features that are specifically useful for seawater and coastal water samples. The instrument provides the user with DIC values (micromol per kg) and the delta13C content of the DIC (per mille). It consists of a digital syringe pump for delivery of reagent and samples, a mass flow controller to regulate flow rate, a CO2 stripping reactor, and an electronic cooling system to remove moisture. The AS-D1 does not measure the sample but is designed to send the gas to a different analyzer. This second instrument then sends the measurements back to the AS-D1 after analysis. The AS-D1 then calculates the desired DIC and delta13C outputs. This instrument is designed for automatic sampling from multiple bottles. It can be used in laboratories on shore or at sea.
The instrument was created to be paired with the Picarro G-2131i Carbon Isotope Analyser, however, other models that measure the isotopic ratio of CO2 may be compatible. The precision is +/- 0.1 % for DIC of seawater and +/- 0.07 % for DIC-delta13C. Sample volume is 1-7 milliliters per analysis, and sample time is under 12 minutes.
Additional information from the manufacturer is available at: https://apolloscitech.com/dicdelta.html
Picarro G-2121i Cavity Ringdown Spectrometer
Picarro G-2121i Cavity Ringdown Spectrometer
PI Supplied Instrument Name: Picarro G-2121i Cavity Ringdown Spectrometer PI Supplied Instrument Description:DIC-d13C was determined using an Apollo AS-D1 DIC and d13C-DIC analyzer unit, connected to a Picarro G-2121i Cavity Ringdown Spectrometer. Instrument Name: Cavity enhanced absorption spectrometers Instrument Short Name:CEAS Instrument Description: Instruments that illuminate a sample inside an optical cavity, typically using laser light, and measure the concentration or amount of a species in gas phase by absorption spectroscopy. Techniques include cavity ring-down spectroscopy (CRDS) and integrated cavity output spectroscopy (ICOS).
SeaBird SBE-911+
SeaBird SBE-911+
PI Supplied Instrument Name: SeaBird SBE-911+ Instrument Name: CTD Sea-Bird SBE 911plus Instrument Short Name:CTD SBE 911plus Instrument Description: The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/
PI Supplied Instrument Name: PI Supplied Instrument Description:Total alkalinity was determined using an open-system Gran titration on 5-mL samples in triplicate, using a Metrohm 805 Dosimat and a robotic Titrosampler, calibrated against seawater Certified Reference Materials. Instrument Name: Metrohm 805 Dosimat Instrument Short Name:Metrohm 805 Instrument Description: The Metrohm 805 Dosimat is a dispensing instrument for titrating and dosing operations in the laboratory. The 805 Dosimat is controlled by Touch control or PC control software. The instrument controls the dosing of liquids, which are attached via an exchange unit. Metrohm recommends using the Metrohm 806 Exchange units which come with 1, 5, 10, 20, or 50 milliliter (mL) dosing cylinders. The instrument can read and overwrite data from the exchange unit. It has a resolution of 20,000 steps per cylinder volume and a dosing/filling time of 18 seconds.
The 805 Dosimat and the corresponding 806 Exchange Unit are suitable as a buret not only for simply dosing auxiliary solutions but also for titrations. Additional information is available from the instrument manufacturer: https://www.metrohm.com/en_au/products/2/8050/28050010.html
Niskin bottles
Niskin bottles
PI Supplied Instrument Name: Niskin bottles Instrument Name: Niskin bottle Instrument Short Name:Niskin bottle Instrument Description: A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
SEAL Analytical AA3 HR
SEAL Analytical AA3 HR
PI Supplied Instrument Name: SEAL Analytical AA3 HR PI Supplied Instrument Description:Nutrients were determined at the WHOI Nutrient Analytical Facility on a SEAL Analytical AA3 HR following established procedures. Instrument Name: Seal Analytical AutoAnalyser 3HR Instrument Short Name:Seal Analytical AutoAnalyser 3HR Instrument Description: A fully automated Segmented Flow Analysis (SFA) system, ideal for water and seawater analysis. It comprises a modular system which integrates an autosampler, peristaltic pump, chemistry manifold and detector. The sample and reagents are pumped continuously through the chemistry manifold, and air bubbles are introduced at regular intervals forming reaction segments which are mixed using glass coils. The AA3 uses segmented flow analysis principles to reduce inter-sample dispersion, and can analyse up to 100 samples per hour using stable LED light sources.
Titrosampler
Titrosampler
PI Supplied Instrument Name: Titrosampler PI Supplied Instrument Description:Total alkalinity was determined using an open-system Gran titration on 5-mL samples in triplicate, using a Metrohm 805 Dosimat and a robotic Titrosampler, calibrated against seawater Certified Reference Materials. Instrument Name: Titrator Instrument Short Name:Titrator Instrument Description: Titrators are instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/
Cruise: EN665
EN665
R/V Endeavor
Community Standard Description
International Council for the Exploration of the Sea
R/V Endeavor
vessel
EN665
Adam V. Subhas
Woods Hole Oceanographic Institution
R/V Endeavor
Community Standard Description
International Council for the Exploration of the Sea
R/V Endeavor
vessel