http://lod.bco-dmo.org/id/dataset/936073
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
2024-08-22
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Alkalinity and dissolved inorganic carbon (DIC) from sea water samples collected at coral reefs from equatorial central Pacific in 1973, 2012, 2015, and 2018
2024-09-12
publication
2024-09-12
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2024-09-12
publication
https://doi.org/10.26008/1912/bco-dmo.936073.1
Anne L. Cohen
Woods Hole Oceanographic Institution
principalInvestigator
Steven J. Lentz
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: Cohen, A. L., Lentz, S. J. (2024) Alkalinity and dissolved inorganic carbon (DIC) from sea water samples collected at coral reefs from equatorial central Pacific in 1973, 2012, 2015, and 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-09-12 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.936073.1 [access date]
Alkalinity and dissolved inorganic carbon (DIC) from sea water samples collected at coral reefs from equatorial central Pacific in 1973, 2012, 2015, and 2018 Dataset Description: Methods and Sampling: <h3>Location Information</h3>
<p>&nbsp;</p>
<p>Five coral reef islands in the equatorial, central, South Pacific.</p>
<ol>
<li>Kanton Atoll&nbsp;(2.8°S, 171.7°W),&nbsp;&nbsp;is a 200 – 500 m wide barrier island surrounding a lagoon that is 14.5 km long and ~5 km wide. A single, 500 m wide channel connects the lagoon to the ocean. The complex pattern of shallow (~ 1 m deep) line (reticulate) reefs span the central portion of the lagoon with pools between the line reefs that are 10 – 26 m deep.</li>
<li>Enderbury Island&nbsp;(3.1°S, 171.1°W) is about 4.7 km long and 1.2 km wide, with coral reefs extending 50&nbsp;&nbsp;m to 400 m offshore.</li>
<li>Rawaki Island&nbsp;(3.7°S, 170.7°W) is about 1.2 km long and 0.8 km wide with coral reefs surrounding much of the island.</li>
<li>Nikumaroro Island&nbsp;(4.7°S, 174.5°W) is a 300 – 800 m wide barrier island surrounding a lagoon that is about 5 km long and 0.8 km wide. A single, 170 m wide channel connects the lagoon to the ocean.</li>
<li>Orona (Hull) Atoll&nbsp;(4.5°S, 172.2°W) is a ~300 m wide barrier island surrounding a lagoon that is about 8 km long and 3 km wide.&nbsp;&nbsp;</li>
</ol>
<p>For a more complete description of these islands, see&nbsp;Obura, D. (2011).&nbsp;</p>
<p>&nbsp;</p>
<h3>Samples Collected in&nbsp;2012, 2015, and 2018</h3>
<p>&nbsp;</p>
<p>Samples from 2012, 2015, and 2018 were collected on three cruises to Kanton Island:</p>
<ol>
<li>June 7-18, 2012:&nbsp;&nbsp;Pangaea Exploration, Emily Penn, vessel Seadragon, PI Anne Cohen</li>
<li>September 5-26, 2015:&nbsp;Vessels Nai'a and Hanse Explorer, cruise led by New England Aquarium, PIs Dr Randi Rojan, Dr Simon Thorrold, Dr Stuart Sandin</li>
<li>May 5-23, 2018: Pangaea Exploration,&nbsp;Captain Eric and Shanley Loss, vessel SeaDragon, PI Anne Cohen</li>
</ol>
<p>Discrete water samples were collected using Niskin samplers, transferred to the appropriate bottles on site, shipped to Woods Hole Oceanographic Institution and&nbsp;analyzed to determine salinity, total alkalinity (TA), dissolved inorganic carbon (DIC), and in some cases nitrate, ammonium, phosphate and silicate concentrations.&nbsp;Unfiltered 250 mL bottle samples for carbonate chemistry were fixed with 100 µL of a saturated HgCl<sub>2</sub>&nbsp;solution immediately upon collection to inhibit biological activity. TA analyses were performed with a Marianda Versatile Instrument for the Determination of Total inorganic carbon and titration Alkalinity (VINDTA 3C). The VINDTA 3C uses an open cell potentiometric titration for TA analysis. The TA measurements were standardized using in-house laboratory seawater standards calibrated using certified reference materials obtained from Andrew Dickson at Scripps Institution of Oceanography (Dickson et al. 2007). Analyses of replicate samples and of replicate independent working standards each day yielded a mean TA precision of approximately ± 1.5 μmol kg<sup>−1</sup>. Some water samples were also analyzed to determine nitrate, ammonium, phosphate, and silicate concentrations&nbsp;at the&nbsp;Woods Hole Oceanographic Institution Nutrient Analytical Facility using a four channel segmented flow AA3 HR Autoanalyzer.&nbsp;Bottle salinity was measured on a Guildline Autosal salinometer. Simultaneous water temperatures were measured using either a HOBO Temp Pro data logger or a Sontek Castaway CTD.</p>
<p>&nbsp;</p>
<h3>Samples Collected in 1973</h3>
<p>&nbsp;</p>
<p>From Smith and Jokiel (1978), the 1973 water samples were collected from a small skiff or by wading from shore. They were captured&nbsp;in 250-ml polyethylene bottles and maintained near collection temperature until they could be analyzed (average time ~ 6 hours). A Corning model 101 pH meter and a combination electrode were used for all pH and alkalinity measurements. Salinity was determined using a Plessey model 6230N laboratory conductivity salinometer.&nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2049567 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2049567
completed
Anne L. Cohen
Woods Hole Oceanographic Institution
508-289-2958
Geology & Geophysics 266 Woods Hole Rd MS #23
Woods Hole
MA
02543
USA
acohen@whoi.edu
pointOfContact
Steven J. Lentz
Woods Hole Oceanographic Institution
508-289-2808
Clark 319A, MS #21
Woods Hole
MA
02543-1541
USA
slentz@whoi.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Datetime_UTC
Datetime_local
Lat_N
Lon_E
Site_description
Depth
Temperature
Salinity
TA
DIC
Nitrate
Ammonium
Ammonium_flag
Phosphate
Silicate
pH
Guildline Autosal salinometer
Corning model 101 pH meter and combination electrode
VINDTA 3C
Niskin samplers
HOBO Temp Pro v2
Plessey model 6230N
Four channel segmented flow AA3 HR Autoanalyzer
Sontek Castaway
theme
None, User defined
ISO_DateTime_UTC
ISO_DateTime_Local
latitude
longitude
site description
depth
water temperature at measurement depth
salinity
total alkalinity (TA)
dissolved inorganic Carbon
Nitrate
Ammonium
flag
reactive phosphorus (PO4)
Silicate (reactive silica)
pH
featureType
BCO-DMO Standard Parameters
Autosal salinometer
Benchtop pH Meter
MARIANDA VINDTA 3C total inorganic carbon and titration alkalinity analyser
Niskin bottle
Onset HOBO Pro v2 temperature logger
Salinometer
Seal Analytical AutoAnalyser 3HR
SonTek CastAway-CTD
instrument
BCO-DMO Standard Instruments
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.
The Biophysics of Coral Reef Resilience: hydrodynamic and ecological drivers of coral survival under extreme heat
http://www2.whoi.edu/site/cohenlab/
The Biophysics of Coral Reef Resilience: hydrodynamic and ecological drivers of coral survival under extreme heat
<p><em><strong>NSF Award Abstract:</strong></em><br />
Coral reefs are among the most diverse ecosystems on the planet and support the livelihoods of hundreds of millions of people around the world. Ocean warming and intensifying heatwaves are killing coral reefs and there are urgent efforts underway to identify and protect those capable of surviving future warming. Coral reefs in the central equatorial Pacific have experienced three extreme heat events over the last two decades. Initial observational data obtained by the investigators show that coral mortality during each event was spatially variable, implying that some coral communities have developed resilience to thermal stress. In this study, the investigators are examining the role of fine-scale variations in reef temperature and water flow in promoting coral resilience by providing opportunities for genetic adaptation, by protectively cooling corals through upwelling or internal waves, or by enhancing food supply. Results will provide novel insights into the mechanisms by which coral communities survive extreme heat and a new tool that allows scientists and coral reef managers to identify resilient reefs for protection. Additionally, this project is supporting an early-career scientist, graduate and undergraduate research, opportunities for high school students in the United States to participate in research, as well as participation by Kanton high school students. Outreach will be conducted through presentations and a variety of media, including film. The hydrodynamic model output will be made publicly available, and project outcomes will contribute to a universal map of coral thermal thresholds currently under development by the scientific community.</p>
<p>Ocean warming and intensifying heatwaves are devastating coral reefs across the global tropics. Consequently, a coordinated effort is underway to identify and protect coral communities that can survive these changes. This interdisciplinary team of investigators is combining oceanographic observations, 3-dimensional fine-scale hydrodynamic model simulations, benthic surveys, and biological assays to investigate the role of reef hydrodynamics in facilitating coral resilience to thermal stress on Kanton Island in the central equatorial Pacific. The investigators are testing the hypothesis that oceanographic and atmospheric forcing interact with reef bathymetry to induce predictable fine-scale heterogeneity in water temperature and flow across the reef. They are also testing the hypothesis that environmental heterogeneity, in turn, facilitates coral survival of extreme heat by providing opportunities for genetic adaptation, protective cooling, and/or enhanced food supply. Results will provide insights into the biophysical mechanisms underpinning reef resilience and a new tool with which to predict resilience across a broad range of coral reef ecosystems.</p>
<p>This project is supported with funds from the Biological and Physical Oceanography Programs.</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>
Biophysics of Coral Reef Resilience
largerWorkCitation
project
eng; USA
oceans
-174.547
-162.968
-4.687
0.009
1973-11-27
2018-05-23
Central Tropical Pacific
0
BCO-DMO catalogue of parameters from Alkalinity and dissolved inorganic carbon (DIC) from sea water samples collected at coral reefs from equatorial central Pacific in 1973, 2012, 2015, and 2018
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/936988.rdf
Name: Datetime_UTC
Units: unitless
Description: <p>Date and time (UTC) of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/936989.rdf
Name: Datetime_local
Units: unitless
Description: <p>Date and time (local) of sample collection; GMT +13.</p>
http://lod.bco-dmo.org/id/dataset-parameter/936990.rdf
Name: Lat_N
Units: decimal degrees
Description: <p>Latitude of sampling site, negative values = South</p>
http://lod.bco-dmo.org/id/dataset-parameter/936991.rdf
Name: Lon_E
Units: decimal degrees
Description: <p>Longitude of sampling site, negative values = West</p>
http://lod.bco-dmo.org/id/dataset-parameter/936992.rdf
Name: Site_description
Units: unitless
Description: <p>Collection site description, includes island, general ocean location, type of water</p>
http://lod.bco-dmo.org/id/dataset-parameter/936993.rdf
Name: Depth
Units: meters (m)
Description: <p>Sample depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/936994.rdf
Name: Temperature
Units: degrees Celsius
Description: <p>Water temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/936995.rdf
Name: Salinity
Units: practical salinity unit, psu
Description: <p>Water salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/936996.rdf
Name: TA
Units: micromoles/kilogram
Description: <p>Total alkalinity concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/936997.rdf
Name: DIC
Units: micromoles/kilogram
Description: <p>Dissolved inorganic carbon concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/936998.rdf
Name: Nitrate
Units: micromoles/liter
Description: <p>Nitrate, NO3</p>
http://lod.bco-dmo.org/id/dataset-parameter/936999.rdf
Name: Ammonium
Units: micromoles/liter
Description: <p>Ammonium, NH4</p>
http://lod.bco-dmo.org/id/dataset-parameter/937000.rdf
Name: Ammonium_flag
Units: dimensionless
Description: <p>Flag indicates whether Ammonium was above or below .034 micromoles/liter; data flag set as 1 (above .034 micromoles/liter) or 2 (below .034 micromoles/liter)</p>
http://lod.bco-dmo.org/id/dataset-parameter/937001.rdf
Name: Phosphate
Units: micromoles/liter
Description: <p>Phosphate, PO4</p>
http://lod.bco-dmo.org/id/dataset-parameter/937002.rdf
Name: Silicate
Units: micromoles/liter
Description: <p>Silicate, SiO4</p>
http://lod.bco-dmo.org/id/dataset-parameter/937003.rdf
Name: pH
Units: unitless
Description: <p>pH</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
43294
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/8e5ff2b8-1fd4-4182-a349-87059eb1a637/content
download
https://doi.org/10.26008/1912/bco-dmo.936073.1
download
onLine
dataset
<h3>Location Information</h3>
<p>&nbsp;</p>
<p>Five coral reef islands in the equatorial, central, South Pacific.</p>
<ol>
<li>Kanton Atoll&nbsp;(2.8°S, 171.7°W),&nbsp;&nbsp;is a 200 – 500 m wide barrier island surrounding a lagoon that is 14.5 km long and ~5 km wide. A single, 500 m wide channel connects the lagoon to the ocean. The complex pattern of shallow (~ 1 m deep) line (reticulate) reefs span the central portion of the lagoon with pools between the line reefs that are 10 – 26 m deep.</li>
<li>Enderbury Island&nbsp;(3.1°S, 171.1°W) is about 4.7 km long and 1.2 km wide, with coral reefs extending 50&nbsp;&nbsp;m to 400 m offshore.</li>
<li>Rawaki Island&nbsp;(3.7°S, 170.7°W) is about 1.2 km long and 0.8 km wide with coral reefs surrounding much of the island.</li>
<li>Nikumaroro Island&nbsp;(4.7°S, 174.5°W) is a 300 – 800 m wide barrier island surrounding a lagoon that is about 5 km long and 0.8 km wide. A single, 170 m wide channel connects the lagoon to the ocean.</li>
<li>Orona (Hull) Atoll&nbsp;(4.5°S, 172.2°W) is a ~300 m wide barrier island surrounding a lagoon that is about 8 km long and 3 km wide.&nbsp;&nbsp;</li>
</ol>
<p>For a more complete description of these islands, see&nbsp;Obura, D. (2011).&nbsp;</p>
<p>&nbsp;</p>
<h3>Samples Collected in&nbsp;2012, 2015, and 2018</h3>
<p>&nbsp;</p>
<p>Samples from 2012, 2015, and 2018 were collected on three cruises to Kanton Island:</p>
<ol>
<li>June 7-18, 2012:&nbsp;&nbsp;Pangaea Exploration, Emily Penn, vessel Seadragon, PI Anne Cohen</li>
<li>September 5-26, 2015:&nbsp;Vessels Nai'a and Hanse Explorer, cruise led by New England Aquarium, PIs Dr Randi Rojan, Dr Simon Thorrold, Dr Stuart Sandin</li>
<li>May 5-23, 2018: Pangaea Exploration,&nbsp;Captain Eric and Shanley Loss, vessel SeaDragon, PI Anne Cohen</li>
</ol>
<p>Discrete water samples were collected using Niskin samplers, transferred to the appropriate bottles on site, shipped to Woods Hole Oceanographic Institution and&nbsp;analyzed to determine salinity, total alkalinity (TA), dissolved inorganic carbon (DIC), and in some cases nitrate, ammonium, phosphate and silicate concentrations.&nbsp;Unfiltered 250 mL bottle samples for carbonate chemistry were fixed with 100 µL of a saturated HgCl<sub>2</sub>&nbsp;solution immediately upon collection to inhibit biological activity. TA analyses were performed with a Marianda Versatile Instrument for the Determination of Total inorganic carbon and titration Alkalinity (VINDTA 3C). The VINDTA 3C uses an open cell potentiometric titration for TA analysis. The TA measurements were standardized using in-house laboratory seawater standards calibrated using certified reference materials obtained from Andrew Dickson at Scripps Institution of Oceanography (Dickson et al. 2007). Analyses of replicate samples and of replicate independent working standards each day yielded a mean TA precision of approximately ± 1.5 μmol kg<sup>−1</sup>. Some water samples were also analyzed to determine nitrate, ammonium, phosphate, and silicate concentrations&nbsp;at the&nbsp;Woods Hole Oceanographic Institution Nutrient Analytical Facility using a four channel segmented flow AA3 HR Autoanalyzer.&nbsp;Bottle salinity was measured on a Guildline Autosal salinometer. Simultaneous water temperatures were measured using either a HOBO Temp Pro data logger or a Sontek Castaway CTD.</p>
<p>&nbsp;</p>
<h3>Samples Collected in 1973</h3>
<p>&nbsp;</p>
<p>From Smith and Jokiel (1978), the 1973 water samples were collected from a small skiff or by wading from shore. They were captured&nbsp;in 250-ml polyethylene bottles and maintained near collection temperature until they could be analyzed (average time ~ 6 hours). A Corning model 101 pH meter and a combination electrode were used for all pH and alkalinity measurements. Salinity was determined using a Plessey model 6230N laboratory conductivity salinometer.&nbsp;</p>
Specified by the Principal Investigator(s)
<p>For 1973 data, DIC&nbsp;was determined using the CO2SYS software (Lewis, E.&nbsp;et al.&nbsp;1998).</p>
Specified by the Principal Investigator(s)
- Imported original files "PIPA_2012_watersamples.xlsx", "PIPA_2015_watersamples.xlsx", "PIPA_2018_watersamples.xlsx", and "SmithJokiel_1973_watersamples.xlsx" into the BCO-DMO system.
- Converted "Date (local)" field format (%m/%d/%Y) from "SmithJokiel_1973_watersamples.xlsx" to format represented in the other files (%d-%b-%y).
- Concatenated all files into one file, "joined_watersamples".
- Combined "Island" and "Location" fields into new field, "Site_description".
- Replaced "-" with blank value.
- Converted "Date (local)" field into UTC and Local date-time fields in ISO format ("Datetime_UTC","Datetime_local").
- Added new field for an Ammonium flag to accommodate the "<0.034" string value.
- Removed "<0.034" string value from Ammonium column.
- Combined the "Salinity (0/00)" and "Salinity (psu)" fields.
- Renamed fields to comply with BCO-DMO naming conventions.
- Removed redundant columns: "Date (local)", "Time (local)", "Island", "Location", "Salinity (0/00)", "TA (millieq/l)".
- Saved the final file as "936073_v1_dic_pacific_reefs.csv".
Specified by BCO-DMO Data Managers
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
Guildline Autosal salinometer
Guildline Autosal salinometer
PI Supplied Instrument Name: Guildline Autosal salinometer PI Supplied Instrument Description:Bottle salinity for 2012, 2015, and 2018 was measured on a Guildline Autosal salinometer. Instrument Name: Autosal salinometer Instrument Short Name:salinometer Instrument Description: The salinometer is an instrument for measuring the salinity of a water sample. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB30/
Corning model 101 pH meter and combination electrode
Corning model 101 pH meter and combination electrode
PI Supplied Instrument Name: Corning model 101 pH meter and combination electrode PI Supplied Instrument Description:For data collected in 1973, a Corning model 101 pH meter and a combination electrode were used for all pH and alkalinity measurements. Instrument Name: Benchtop pH Meter Instrument Short Name:Benchtop pH Meter Instrument Description: An instrument consisting of an electronic voltmeter and pH-responsive electrode that gives a direct conversion of voltage differences to differences of pH at the measurement temperature. (McGraw-Hill Dictionary of Scientific and Technical Terms)
This instrument does not map to the NERC instrument vocabulary term for 'pH Sensor' which measures values in the water column. Benchtop models are typically employed for stationary lab applications.
VINDTA 3C
VINDTA 3C
PI Supplied Instrument Name: VINDTA 3C PI Supplied Instrument Description:Total alkalinity (TA) analyses were performed with a Marianda Versatile Instrument for the Determination of Total inorganic carbon and titration Alkalinity (VINDTA 3C). The VINDTA 3C uses an open cell potentiometric titration for TA analysis. Instrument Name: MARIANDA VINDTA 3C total inorganic carbon and titration alkalinity analyser Instrument Short Name:inorganic carbon and alkalinity analyser Instrument Description: The Versatile INstrument for the Determination of Total inorganic carbon and titration Alkalinity (VINDTA) 3C is a laboratory alkalinity titration system combined with an extraction unit for coulometric titration, which simultaneously determines the alkalinity and dissolved inorganic carbon content of a sample. The sample transport is performed with peristaltic pumps and acid is added to the sample using a membrane pump. No pressurizing system is required and only one gas supply (nitrogen or dry and CO2-free air) is necessary. The system uses a Metrohm Titrino 719S, an ORION-Ross pH electrode and a Metrohm reference electrode. The burette, the pipette and the analysis cell have a water jacket around them. Precision is typically +/- 1 umol/kg for TA and/or DIC in open ocean water. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0481/
Niskin samplers
Niskin samplers
PI Supplied Instrument Name: Niskin samplers PI Supplied Instrument Description:Discrete water samples were collected using Niskin samplers 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/
HOBO Temp Pro v2
HOBO Temp Pro v2
PI Supplied Instrument Name: HOBO Temp Pro v2 PI Supplied Instrument Description:Simultaneous water temperatures in 2012, 2015, and 2018 were measured using either a HOBO Temp Pro data logger or a Sontek Castaway CTD. Instrument Name: Onset HOBO Pro v2 temperature logger Instrument Short Name:HOBO U22-001 Instrument Description: The HOBO Water Temp Pro v2 temperature logger, manufactured by Onset Computer Corporation, has 12-bit resolution and a precision sensor for ±0.2°C accuracy over a wide temperature range. It is designed for extended deployment in fresh or salt water.
Operation range: -40° to 70°C (-40° to 158°F) in air; maximum sustained temperature of 50°C (122°F) in water
Accuracy: 0.2°C over 0° to 50°C (0.36°F over 32° to 122°F)
Resolution: 0.02°C at 25°C (0.04°F at 77°F)
Response time: (90%) 5 minutes in water; 12 minutes in air moving 2 m/sec (typical)
Stability (drift): 0.1°C (0.18°F) per year
Real-time clock: ± 1 minute per month 0° to 50°C (32° to 122°F)
Additional information (http://www.onsetcomp.com/)
Onset Computer Corporation
470 MacArthur Blvd
Bourne, MA 02532 Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/134/
Plessey model 6230N
Plessey model 6230N
PI Supplied Instrument Name: Plessey model 6230N PI Supplied Instrument Description:The samples collected in 1973 were tested for salinity using a Plessey model 6230N laboratory conductivity salinometer. Instrument Name: Salinometer Instrument Short Name:Salinometer Instrument Description: A salinometer is a device designed to measure the salinity, or dissolved salt content, of a solution.
Four channel segmented flow AA3 HR Autoanalyzer
Four channel segmented flow AA3 HR Autoanalyzer
PI Supplied Instrument Name: Four channel segmented flow AA3 HR Autoanalyzer PI Supplied Instrument Description:Some water samples were also analyzed to determine nitrate, ammonium, phosphate, and silicate concentrations at the Woods Hole Oceanographic Institution Nutrient Analytical Facility (https://web.whoi.edu/nutrient/) using a four channel segmented flow AA3 HR Autoanalyzer. 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.
Sontek Castaway
Sontek Castaway
PI Supplied Instrument Name: Sontek Castaway PI Supplied Instrument Description:Simultaneous water temperatures in 2012, 2015, and 2018 were measured using either a HOBO Temp Pro data logger or a Sontek Castaway CTD. Instrument Name: SonTek CastAway-CTD Instrument Short Name:CastAway-CTD Instrument Description: The Sontek CastAway-CTD (manufactured by Xylem) is a handheld castable instrument that provides instantaneous profiles of temperature, salinity, and sound speed. Each cast is referenced with both time and location using its built-in GPS receiver. The CastAway software displays profiles of the casts in addition to mapping the locations of the data collection points. The CastAway-CTD has a 5 Hz response and sampling rate, accurate to 0.1 (PSS-78), 0.05° Celsius.
Conductivity range is 0 to 100,000 µS/cm.
Temperature range is -5° to 45° Celsius.
Pressure range is 0 to 100 decibars.
Further specs and information can be found on the manufacturer's website: https://www.xylem.com/en-us/brands/wtw/wtw-products/castaway-ctd/