http://lod.bco-dmo.org/id/dataset/833517
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
2020-12-11
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Hydrographic, nutrient, and carbonate system data from R/V Janan cruises in the Arabian Gulf in December 2018 and May 2019
2021-12-29
publication
2021-12-29
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-01-27
publication
https://doi.org/10.26008/1912/bco-dmo.833517.1
James W. Murray
University of Washington
principalInvestigator
Oguz Yigiterhan
Qatar University
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: Murray, J. W., Yigiterhan, O. (2022) Hydrographic, nutrient, and carbonate system data from R/V Janan cruises in the Arabian Gulf in December 2018 and May 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-12-29 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.833517.1 [access date]
Dataset Description: <p>Hydrographic, nutrient and carbonate system data was collected aboard the R/V Janan on two single day cruises in the Arabian Gulf.&nbsp;&nbsp;</p> Methods and Sampling: <p><strong>Sampling</strong><br />
Water column sampling using rosette mounted 10-L PVC Niskin bottles was conducted on December 5, 2018 and May 18, 2019 in the Arabian Gulf on the R/V Janan (Figure 1). Surface water samples and hydrographic data were collected at seven stations (stations 1C, 2C, 3C, 4C, 5C, 6B, 6C) along a transect from the central east coast of Qatar across the Qatari Exclusive Economic Zone (EEZ). Stations were chosen to be nearly&nbsp; perpendicular to the major axis of the Gulf to capture main regional hydrographic features across the EEZ. The transect provides a reasonable representation of hydrographic distributions across the wider part of the Gulf. Samples were collected in triplicate at each station. Vertical profiles with one surface sample, one bottom sample, and 1 to 3 mid-depth samples were collected at stations 2C, 4C, 6B, and 6C.</p>
<p>Samples for DIC and total alkalinity were collected in 300 mL Wheaton BOD glass bottles with ground glass stoppers. Samples were sealed immediately after collection to prevent loss of CO<sub>2</sub>. Samples were poisoned with 50 µL HgCl<sub>2</sub> (0.05% by volume) to prevent biological&nbsp;activity, then covered with aluminum&nbsp; foil to eliminate light and biological growth.&nbsp;</p>
<p><strong>Analysis</strong><br />
The best approach for understanding ocean acidification is to measure the primary capacity factors of the carbonate system chemistry which are dissolved inorganic carbon (DIC) and total alkalinity (TAlk). DIC and alkalinity are the best set of parameters use for calculating pH, pCO<sub>2</sub>&nbsp;and carbonate ion, because they are conservative properties during water mass mixing.<br />
<br />
After collection, samples were shipped to the University of Washington for DIC and TAlk analyses in Dr. Alex Gagnon’s laboratory. Carbonate system measurements follow the methods of Dickson et al. (2007). Briefly, TAlk (μmol kg<sup>-1</sup>) was determined through open-cell automated titration (876 Dosimat plus, Metrohm AG) with a solution of 0.1M hydrochloric acid (HCl)+0.6M sodium chloride (NaCl). Total DIC (μmol/kg) was obtained through coulometric determination (VINDTA 3D, Marianda with UIC coulometer). Certified reference materials for TAlk and DIC obtained from Andrew Dickson (Scripps Institution of Oceanography) were run in conjunction with seawater samples as a calibration standard and to monitor precision. Long-term precision for DIC and TAlk in this lab, based on repeated measurements of CRM materials, was ± 3.7 μmol kg<sup>-1</sup>&nbsp;(2σ std. dev.) and ± 4.3 μmol kg<sup>-1</sup>&nbsp;(2σ std. dev.), respectively (Bolden et al., 2019).</p>
<p>&nbsp;pCO<sub>2</sub>&nbsp;and pH were calculated from DIC and Alk using CO2Calc using the total pH scale with carbonate equilibrium constants refit from Mehrbach et al. (1973) by Dickson and Millero (1987); borate alkalinity was calculated using the boron/chlorinity (salinity) relationship provided by Lee et al. (2010) and equilibrium constants from Dickson (1990).&nbsp; Where necessary, NTAlk, and NDIC values used in subsequent calculations were salinity-normalized to a mean salinity value of 40.0. Data analysis was executed using Microsoft Excel. Certain data properties were calculated using CO<sub>2</sub>Calc. This includes parameters such as pH, CO<sub>3</sub><sup>2-</sup>, and pCO<sub>2</sub>.</p>
<p>During both cruises, samples were also collected and analyzed for: Hydrographic properties using a SeaBird Electronics, SBE 911 on a CTD SeaBird rosette (T, S, O<sub>2</sub>, pH, % Transmission and fluorescence). The pH sensor used in our project is the SBE 27 pH/O.R.P (Redox) Sensor.</p>
<p>Dissolved oxygen was measured using the SBE 43 Dissolved Oxygen sensor. Additional discrete samples&nbsp;were analyzed for dissolved oxygen within a few hours of collection using the titrimetric method (Winkler, 1888). Nutrients (NO<sub>3</sub>, NO<sub>2</sub>, NH<sub>4</sub>, PO<sub>4</sub>, and Si) and chlorophyll were analyzed on filtered samples using classical techniques (Parsons et al., 1984).</p>
<p>Suspended particulate matter for particulate Ca analyses was sampled using 47 mm filter holders and 0.45 µM mesh size Nuclepore filters. Filtration volumes of 2 L, provided sufficient samples for analyses.&nbsp; Particulate samples were acid digested in a clean lab on hot plates using trace metal grade concentrated HF (16.5M), HCl (6M) and, HNO<sub>3</sub>&nbsp;(16M) acids (Yigiterhan and Murray, 2008; Yigiterhan et al., 2011, Yigiterhan et al., 2018). H<sub>2</sub>O<sub>2</sub>&nbsp;was added for complete removal of the organic material. The elemental analyses were&nbsp;performed using ICP-OES.</p>
Funding provided by International Research Co-Fund Collaboration Program of QU (IRCC) Award Number: IRCC-2019-002
completed
James W. Murray
University of Washington
206-543-4730
School of Oceanography Box 357940
Seattle
WA
98195-7940
USA
jmurray@ocean.washington.edu
pointOfContact
Oguz Yigiterhan
Qatar University
974-4403-3956
Qatar University, Environmental Science Center P.O. Box 2713
Al-Tarfa
Doha
Qatar
oguz@qu.edu.qa
pointOfContact
asNeeded
Dataset Version: 1
Unknown
ISO_DateTime_UTC
Cruise_ID
Station
Latitude
Longitude
Total_Depth
Sampling_Depth
Bottle_Number
Temperature
Salinity
Dissolved_Oxygen
Nitrate
Phosphate
Silicate
DIC
Alkalinity
pCO2
pH_calc
SBE 911 on a CTD SeaBird rosette
ICP-OES
VINDTA 3D, Marianda with UIC coulometer
10-L PVC Niskin bottle
SBE 27 pH/O.R.P (Redox) Sensor
SBE 43 Dissolved Oxygen sensor
Metrohm AG 876 Dosimat plus
theme
None, User defined
ISO_DateTime_UTC
Cruise identfier
station
latitude
longitude
depth
bottle
water temperature at measurement depth
salinity
dissolved Oxygen
Nitrate
phosphate
Silicate (reactive silica)
dissolved inorganic Carbon
total alkalinity (TA)
Partial pressure of CO2
pH
featureType
BCO-DMO Standard Parameters
CTD Sea-Bird 911
Inductively Coupled Plasma Optical Emission Spectrometer
MARIANDA VINDTA 3C total inorganic carbon and titration alkalinity analyser
Niskin bottle
Sea-Bird SBE 27 pH/O.R.P. sensor
Sea-Bird SBE 43 Dissolved Oxygen Sensor
Titrator
instrument
BCO-DMO Standard Instruments
Janan_20181205
Janan_20190518
service
Deployment Activity
Arabian Gulf
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.
Carbonate System Chemistry in the Arabian Gulf
https://osprey.bco-dmo.org/project/833504
Carbonate System Chemistry in the Arabian Gulf
<p><strong>Project Summary</strong></p>
<p>There is concern that coral reefs in the Arabian (Persian) Gulf are being severely impacted by ocean acidification yet little is known about the carbonate system geochemistry in this region. The tropical coral reefs of the world reach their northernmost limits in the Gulf. Reefs there may be relatively small but they represent the regions biological store house. Historically, the countries bordering the Gulf used pearl oyster beds and coral reefs as a large part of their economy and cultural heritage. It comes as a surprise to many that the Gulf is a repository of biodiversity. The carbonate system chemistry in the Gulf was first sampled in 1977 but has not been studied since. Surface water enters the Gulf with relatively high concentrations of DIC and alkalinity from the Arabian Sea. As the water flows northward, alkalinity and DIC increase but salinity normalized alkalinity and DIC decrease. The decrease in concentrations of DIC and alkalinity can be used to determine the relative importance of CO2 removal by CaCO3 formation versus primary production. Another factor to consider is that as the water flows north some CO2 is lost due to gas exchange. At the time of the study in 1977 the Arabian Gulf was degassing CO2 to the atmosphere. Now 40 years have passed and the gradients and fluxes may have changed.</p>
<p>Because data regarding the progress of ocean acidification in the Arabian Gulf is sparse, an international collaboration between Qatar University (QU) and the University of Washington (UW) has been organized to fill this deficiency. This study started in 2018 with institutional funding from Qatar University. At present there is no definite end date. The initial study will consist of seasonal cruises on the <em>RV Janan</em> in the Exclusive Economic Zone of Qatar. Our core data set will include hydrographic parameters, nutrients, dissolved inorganic carbon (DIC) and alkalinity. pH and pCO2 will be calculated from DIC and alkalinity. After establishing regional concentrations we plan a detailed study of a healthy coral reef system to measure net calcification.</p>
<p>The goal of this study is to assess the status of the ocean carbonate system in the Exclusive Economic Zone of Qatar in the Arabian Gulf with respect to present and future impacts by ocean acidification and use the distributions of DIC and alkalinity to determine the relative importance of organic matter production and CaCO3 formation for sinks and sources of CO2.</p>
Arabian Gulf CO2
largerWorkCitation
project
eng; USA
oceans
Arabian Gulf
51.749167
52.404167
25.485833
26.225167
2018-12-05
2019-05-18
Exclusive Economic Zone of Qatar
0
BCO-DMO catalogue of parameters from Hydrographic, nutrient, and carbonate system data from R/V Janan cruises in the Arabian Gulf in December 2018 and May 2019
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/867354.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time in ISO8601 standard format (YYYY-MM-DDThh:mm:ssZ)</p>
http://lod.bco-dmo.org/id/dataset-parameter/867355.rdf
Name: Cruise_ID
Units: unitless
Description: <p>Cruise ID</p>
http://lod.bco-dmo.org/id/dataset-parameter/867356.rdf
Name: Station
Units: unitless
Description: <p>Station</p>
http://lod.bco-dmo.org/id/dataset-parameter/867357.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/867358.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/867359.rdf
Name: Total_Depth
Units: meters (m)
Description: <p>Water depth at sampling location</p>
http://lod.bco-dmo.org/id/dataset-parameter/867360.rdf
Name: Sampling_Depth
Units: meters (m)
Description: <p>Depth of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/867361.rdf
Name: Bottle_Number
Units: unitless
Description: <p>Bottle number</p>
http://lod.bco-dmo.org/id/dataset-parameter/867362.rdf
Name: Temperature
Units: degrees Celsius
Description: <p>Temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/867363.rdf
Name: Salinity
Units: unitless
Description: <p>Salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/867364.rdf
Name: Dissolved_Oxygen
Units: micromole per liter (umol/L)
Description: <p>Dissolved oxygen (DO)</p>
http://lod.bco-dmo.org/id/dataset-parameter/867365.rdf
Name: Nitrate
Units: micromole per liter (umol/L)
Description: <p>Nitrate (NO3)</p>
http://lod.bco-dmo.org/id/dataset-parameter/867366.rdf
Name: Phosphate
Units: micromole per liter (umol/L)
Description: <p>Phosphate</p>
http://lod.bco-dmo.org/id/dataset-parameter/867367.rdf
Name: Silicate
Units: micromole per liter (umol/L)
Description: <p>Silicate (SiO4)</p>
http://lod.bco-dmo.org/id/dataset-parameter/867368.rdf
Name: DIC
Units: micromole per liter (umol/L)
Description: <p>Dissolved organic carbon (DIC)</p>
http://lod.bco-dmo.org/id/dataset-parameter/867369.rdf
Name: Alkalinity
Units: microequivalent per kilogram (uEquiv/kg)
Description: <p>Alkalinity (ALK)</p>
http://lod.bco-dmo.org/id/dataset-parameter/867370.rdf
Name: pCO2
Units: microatmospheres (uatm)
Description: <p>Partial pressure of carbon dioxide</p>
http://lod.bco-dmo.org/id/dataset-parameter/867371.rdf
Name: pH_calc
Units: unitless
Description: <p>Calculated 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
5461
https://darchive.mblwhoilibrary.org/bitstream/1912/27967/1/dataset-833517_arabian-gulf-carbonate-system-chemistry__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.833517.1
download
onLine
dataset
<p><strong>Sampling</strong><br />
Water column sampling using rosette mounted 10-L PVC Niskin bottles was conducted on December 5, 2018 and May 18, 2019 in the Arabian Gulf on the R/V Janan (Figure 1). Surface water samples and hydrographic data were collected at seven stations (stations 1C, 2C, 3C, 4C, 5C, 6B, 6C) along a transect from the central east coast of Qatar across the Qatari Exclusive Economic Zone (EEZ). Stations were chosen to be nearly&nbsp; perpendicular to the major axis of the Gulf to capture main regional hydrographic features across the EEZ. The transect provides a reasonable representation of hydrographic distributions across the wider part of the Gulf. Samples were collected in triplicate at each station. Vertical profiles with one surface sample, one bottom sample, and 1 to 3 mid-depth samples were collected at stations 2C, 4C, 6B, and 6C.</p>
<p>Samples for DIC and total alkalinity were collected in 300 mL Wheaton BOD glass bottles with ground glass stoppers. Samples were sealed immediately after collection to prevent loss of CO<sub>2</sub>. Samples were poisoned with 50 µL HgCl<sub>2</sub> (0.05% by volume) to prevent biological&nbsp;activity, then covered with aluminum&nbsp; foil to eliminate light and biological growth.&nbsp;</p>
<p><strong>Analysis</strong><br />
The best approach for understanding ocean acidification is to measure the primary capacity factors of the carbonate system chemistry which are dissolved inorganic carbon (DIC) and total alkalinity (TAlk). DIC and alkalinity are the best set of parameters use for calculating pH, pCO<sub>2</sub>&nbsp;and carbonate ion, because they are conservative properties during water mass mixing.<br />
<br />
After collection, samples were shipped to the University of Washington for DIC and TAlk analyses in Dr. Alex Gagnon’s laboratory. Carbonate system measurements follow the methods of Dickson et al. (2007). Briefly, TAlk (μmol kg<sup>-1</sup>) was determined through open-cell automated titration (876 Dosimat plus, Metrohm AG) with a solution of 0.1M hydrochloric acid (HCl)+0.6M sodium chloride (NaCl). Total DIC (μmol/kg) was obtained through coulometric determination (VINDTA 3D, Marianda with UIC coulometer). Certified reference materials for TAlk and DIC obtained from Andrew Dickson (Scripps Institution of Oceanography) were run in conjunction with seawater samples as a calibration standard and to monitor precision. Long-term precision for DIC and TAlk in this lab, based on repeated measurements of CRM materials, was ± 3.7 μmol kg<sup>-1</sup>&nbsp;(2σ std. dev.) and ± 4.3 μmol kg<sup>-1</sup>&nbsp;(2σ std. dev.), respectively (Bolden et al., 2019).</p>
<p>&nbsp;pCO<sub>2</sub>&nbsp;and pH were calculated from DIC and Alk using CO2Calc using the total pH scale with carbonate equilibrium constants refit from Mehrbach et al. (1973) by Dickson and Millero (1987); borate alkalinity was calculated using the boron/chlorinity (salinity) relationship provided by Lee et al. (2010) and equilibrium constants from Dickson (1990).&nbsp; Where necessary, NTAlk, and NDIC values used in subsequent calculations were salinity-normalized to a mean salinity value of 40.0. Data analysis was executed using Microsoft Excel. Certain data properties were calculated using CO<sub>2</sub>Calc. This includes parameters such as pH, CO<sub>3</sub><sup>2-</sup>, and pCO<sub>2</sub>.</p>
<p>During both cruises, samples were also collected and analyzed for: Hydrographic properties using a SeaBird Electronics, SBE 911 on a CTD SeaBird rosette (T, S, O<sub>2</sub>, pH, % Transmission and fluorescence). The pH sensor used in our project is the SBE 27 pH/O.R.P (Redox) Sensor.</p>
<p>Dissolved oxygen was measured using the SBE 43 Dissolved Oxygen sensor. Additional discrete samples&nbsp;were analyzed for dissolved oxygen within a few hours of collection using the titrimetric method (Winkler, 1888). Nutrients (NO<sub>3</sub>, NO<sub>2</sub>, NH<sub>4</sub>, PO<sub>4</sub>, and Si) and chlorophyll were analyzed on filtered samples using classical techniques (Parsons et al., 1984).</p>
<p>Suspended particulate matter for particulate Ca analyses was sampled using 47 mm filter holders and 0.45 µM mesh size Nuclepore filters. Filtration volumes of 2 L, provided sufficient samples for analyses.&nbsp; Particulate samples were acid digested in a clean lab on hot plates using trace metal grade concentrated HF (16.5M), HCl (6M) and, HNO<sub>3</sub>&nbsp;(16M) acids (Yigiterhan and Murray, 2008; Yigiterhan et al., 2011, Yigiterhan et al., 2018). H<sub>2</sub>O<sub>2</sub>&nbsp;was added for complete removal of the organic material. The elemental analyses were&nbsp;performed using ICP-OES.</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
SBE 911 on a CTD SeaBird rosette
SBE 911 on a CTD SeaBird rosette
PI Supplied Instrument Name: SBE 911 on a CTD SeaBird rosette PI Supplied Instrument Description:Hydrographic properties were measured using a SeaBird Electronics, SBE 911 on a CTD SeaBird rosette (T, S, O2, pH, % Transmission and fluorescence). Instrument Name: CTD Sea-Bird 911 Instrument Short Name:CTD SBE 911 Instrument Description: The Sea-Bird SBE 911 is a type of CTD instrument package. The SBE 911 includes the SBE 9 Underwater Unit and the SBE 11 Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 and SBE 11 is called a SBE 911. The SBE 9 uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 and SBE 4). The SBE 9 CTD can be configured with 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/TOOL0035/
ICP-OES
ICP-OES
PI Supplied Instrument Name: ICP-OES PI Supplied Instrument Description:The elemental analyses were done using ICP-OES Instrument Name: Inductively Coupled Plasma Optical Emission Spectrometer Instrument Short Name:ICP-OES or ICP-AES Instrument Description: Also referred to as an Inductively coupled plasma atomic emission spectroscope (ICP-AES). These instruments pass nebulised samples into an inductively-coupled gas plasma (8-10000 K) where they are atomised and excited. The de-excitation optical emissions at characteristic wavelengths are spectroscopically analysed. It is often used in the detection of trace metals.
VINDTA 3D, Marianda with UIC coulometer
VINDTA 3D, Marianda with UIC coulometer
PI Supplied Instrument Name: VINDTA 3D, Marianda with UIC coulometer PI Supplied Instrument Description:Total DIC (μmol/kg) was obtained through coulometric determination (VINDTA 3D, Marianda with UIC coulometer) 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/
10-L PVC Niskin bottle
10-L PVC Niskin bottle
PI Supplied Instrument Name: 10-L PVC Niskin bottle PI Supplied Instrument Description:Water column sampling using rosette mounted 10-L PVC Niskin bottles was conducted 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/
SBE 27 pH/O.R.P (Redox) Sensor
SBE 27 pH/O.R.P (Redox) Sensor
PI Supplied Instrument Name: SBE 27 pH/O.R.P (Redox) Sensor PI Supplied Instrument Description:The pH sensor used in our project is the SBE 27 pH/O.R.P (Redox) Sensor Instrument Name: Sea-Bird SBE 27 pH/O.R.P. sensor Instrument Short Name:SBE 27 pH/Oxidation sensor Instrument Description: The SBE 27 pH and O.R.P. (Redox) sensor combines a pressure-balanced, glass-electrode, Ag/AgCl reference probe and platinum O.R.P. electrode to provide in-situ measurements at depths to 1200 m. The replaceable pH probe is permanently sealed and is supplied with a soaker bottle attachment that prevents the reference electrode from drying out during storage. The SBE 27 is intended for use as an add-on auxiliary sensor for profiling CTDs (SBE 9plus; SBE 19, 19plus, and 19plus V2 SeaCAT; and SBE 25 and 25plus Sealogger).
SBE 43 Dissolved Oxygen sensor
SBE 43 Dissolved Oxygen sensor
PI Supplied Instrument Name: SBE 43 Dissolved Oxygen sensor PI Supplied Instrument Description:Dissolved oxygen was measured using the SBE 43 Dissolved Oxygen sensor Instrument Name: Sea-Bird SBE 43 Dissolved Oxygen Sensor Instrument Short Name:SBE-43 DO Instrument Description: The Sea-Bird SBE 43 dissolved oxygen sensor is a redesign of the Clark polarographic membrane type of dissolved oxygen sensors. more information from Sea-Bird Electronics Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0036/
Metrohm AG 876 Dosimat plus
Metrohm AG 876 Dosimat plus
PI Supplied Instrument Name: Metrohm AG 876 Dosimat plus PI Supplied Instrument Description:Total Alkalinity (μmol kg-1) was determined through open-cell automated titration (876 Dosimat plus, Metrohm AG) 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: Janan_20181205
Janan_20181205
R/V Janan
vessel
Janan_20181205
Oguz Yigiterhan
Qatar University
Cruise: Janan_20190518
Janan_20190518
R/V Janan
vessel
Janan_20190518
Oguz Yigiterhan
Qatar University
R/V Janan
vessel