Dataset Overview | National Centers for Environmental Information (NCEI)

Trajectory profile data from glider ru30, including pH, Total Alkalinity, and Aragonite Saturation State, deployed by Rutgers, the State University of New Jersey in the Mid-Atlantic Bight from 2022-09-06 to 2022-09-16 (NCEI Accession 0283870)

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This dataset contains the trajectory profile data from glider ru30 from one deployment (2022-09-06 to 2022-09-16) to investigate carbonate chemistry and monitor ocean acidification seasonally in the Mid-Atlantic Bight. The glider used for the automated observation includes an integrated deep rated version of the Ion Sensitive Field Effect Transistor (ISFET)-based pH sensor. The pH sensor unit is complemented with existing glider sensors including a CTD, a WETLabs FLBBCD ECO puck configured for simultaneous chlorophyll fluorescence and optical backscatter measurements, and an Acoustic Zooplankton Fish Profiler (AZFP) multi-frequency echo sounder for active acoustic detection of pelagic organisms. This deployment out of Sandy Hook, NJ ran cross-shelf transects zig-zagging southward and ultimately coming back inshore along E line for a recovery out of Tuckerton, NJ. This glider track covered Atlantic sea scallop and Atlantic surfclam habitats in the southern MAB. This delayed mode, high-resolution post-processed dataset contains CTD, chlorophyll a, and pH data. The AZFP dataset is processed separately and not included here (to access this dataset, please email saba@marine.rutgers.edu). This deployment was ended early due to the slowly-flying glider that would not have enough battery to complete the mission.

Dataset Citation

Cite as: Saba, Grace K.; Garzio, Lori M. (2023). Trajectory profile data from glider ru30, including pH, Total Alkalinity, and Aragonite Saturation State, deployed by Rutgers, the State University of New Jersey in the Mid-Atlantic Bight from 2022-09-06 to 2022-09-16 (NCEI Accession 0283870). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/aje1-sh14. Accessed [date].

Dataset Identifiers

ISO 19115-2 Metadata

gov.noaa.nodc:0283870

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Distribution Formats	Originator data format
Ordering Instructions	Contact NCEI for other distribution options and instructions.
Distributor	NOAA National Centers for Environmental Information +1-301-713-3277 NCEI.Info@noaa.gov
Dataset Point of Contact	NOAA National Centers for Environmental Information ncei.info@noaa.gov

Time Period	2022-09-06 to 2022-09-16
Spatial Bounding Box Coordinates	West: -73.867 East: -73.422 South: 40.242 North: 40.433
Spatial Coverage Map

General Documentation

Project Metadata
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Associated Resources

Saba et al 2019 https://doi.org/10.3389/fmars.2019.00664
- https://doi.org/10.3389/fmars.2019.00664
  journal article
Wright-Fairbanks et al 2020 https://doi.org/10.1029/2020JC016505
- https://doi.org/10.1029/2020jc016505
  journal article
PyCO2SYS, Humphreys et al. (2020) https://doi.org/10.5281/zenodo.3744275
- https://doi.org/10.5281/zenodo.3744275
  book
PyCO2SYS, Lewis and Wallace (1998)
IOOS QC Manual for Real-Time Quality Control of pH Data Observations https://cdn.ioos.noaa.gov/media/2019/08/pHfinal_8_15_19b.pdf
- https://cdn.ioos.noaa.gov/media/2019/08/pHfinal_8_15_19b.pdf
  related publication or dataset
IOOS QC Manual of Glider Data https://cdn.ioos.noaa.gov/media/2017/12/Manual-for-QC-of-Glider-Data_05_09_16.pdf
- https://cdn.ioos.noaa.gov/media/2017/12/Manual-for-QC-of-Glider-Data_05_09_16.pdf
  related publication or dataset
Saba, Grace K.; Garzio, Lori M.; Kerfoot, John; Nazzaro, Laura J. (2023). Trajectory profile data from glider ru30, including pH, total alkalinity, and aragonite saturation state, deployed by Rutgers, the State University of New Jersey, in the Mid-Atlantic Bight from 2021-02-26 to 2021-03-21 (NCEI Accession 0278635). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/pegh-ac02.
- https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0278635.html
  Related data
Global Coastal Program Data: North America East Coast;
- https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/north_america_east.html
  related resource
NOAA National Centers for Environmental Information (2022). Ocean Carbon and Acidification Data System (OCADS). NOAA National Centers for Environmental Information. https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
- https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
  OCADS website

Publication Dates	publication: 2023-10-19
Data Presentation Form	Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status	Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility
Data Update Frequency	As needed
Supplemental Information	This data package (Submission ID: BG3FXWT3M) was acquired by NCEI from the Scientific Data Integration System (SDIS) at the NOAA Pacific Marine Environmental Laboratory (PMEL) in accordance with the archival submission agreement between NCEI and PMEL.
Purpose	This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations	accessLevel: Public Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. This data may be redistributed and used without restriction. Data provided as is with no expressed or implied assurance of quality assurance or quality control.

Dataset Citation	Cite as: Saba, Grace K.; Garzio, Lori M. (2023). Trajectory profile data from glider ru30, including pH, Total Alkalinity, and Aragonite Saturation State, deployed by Rutgers, the State University of New Jersey in the Mid-Atlantic Bight from 2022-09-06 to 2022-09-16 (NCEI Accession 0283870). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/aje1-sh14. Accessed [date].
Cited Authors	Saba, Grace K. Rutgers University Garzio, Lori M. Rutgers, The State University of New Jersey
Principal Investigators	Grace K. Saba Rutgers, The State University of New Jersey Lori M. Garzio Rutgers, The State University of New Jersey
Contributors	Rutgers, The State University of New Jersey
Resource Providers	Lori M. Garzio Rutgers, The State University of New Jersey Rutgers, The State University of New Jersey
Publishers	NOAA National Centers for Environmental Information
Acknowledgments	Funding Information: U.S. National Oceanic and Atmospheric Administration Ocean Acidification Program (NOAA OAP) (Optimizing Ocean Acidification Observations for Model Parameterization in the Coupled Slope Water System of the U.S. Northeast Large Marine Ecosystem, NA19OAR0170349)

Theme keywords	NODC DATA TYPES THESAURUS ARAGONITE SATURATION STATE CHLOROPHYLL A CONDUCTIVITY DEPTH - OBSERVATION DISSOLVED ORGANIC MATTER HYDROSTATIC PRESSURE LATITUDE LONGITUDE OPTICAL BACKSCATTER pH SALINITY total alkalinity WATER DENSITY WATER TEMPERATURE NODC OBSERVATION TYPES THESAURUS biological chemical optical physical undulating profile WMO_CategoryCode oceanography Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBONATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC MATTER EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN OPTICS EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY OCADS Study Type Profile Provider Keywords Undulating profile (glider, etc) glider ru30 ru30 Provider Variable Abbreviations aragonite_saturation_state beta_700nm cdom chlorophyll_a conductivity conductivity_lag_shifted density density_lag_shifted depth depth_interpolated lat lon pH_corrected pH_raw pH_reference_voltage_corrected pH_reference_voltage_raw pressure pressure_interpolated profile_id profile_lat profile_lon profile_time salinity salinity_interpolated salinity_lag_shifted temperature temperature_interpolated temperature_lag_shifted total_alkalinity trajectory
Data Center keywords	NODC COLLECTING INSTITUTION NAMES THESAURUS Rutgers, The State University of New Jersey NODC SUBMITTING INSTITUTION NAMES THESAURUS Rutgers, The State University of New Jersey
Platform keywords	NODC PLATFORM NAMES THESAURUS RU30 Global Change Master Directory (GCMD) Platform Keywords SEAGLIDER ICES/SeaDataNet Ship Codes RU30 (ICES code: 33WU, 2014)
Instrument keywords	NODC INSTRUMENT TYPES THESAURUS carbon dioxide (CO2) gas analyzer salinometer temperature sensor titrator Global Change Master Directory (GCMD) Instrument Keywords CO2 ANALYZERS > CO2 ANALYZERS SALINOMETERS TEMPERATURE SENSORS > TEMPERATURE SENSORS
Place keywords	NODC SEA AREA NAMES THESAURUS Mid-Atlantic Bight North Atlantic Ocean Global Change Master Directory (GCMD) Location Keywords OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN Provider Geographic Names Mid-Atlantic Bight North Atlantic Ocean
Project keywords	NODC PROJECT NAMES THESAURUS US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP) Cruise ID Gliders EXPOCODE NA Ocean Acidification Search Keywords Ocean Carbon and Acidification Data System (OCADS) Project Reference Section ID Mid-Atlantic Bight Research Projects U.S National Oceanic and Atmospheric Administration Ocean Acidification Program (NOAA OAP) U.S. Integrated Ocean Observing System (IOOS) and Sustained Underwater Glider Observations for Improving Atlantic Tropical Cyclone Intensity Forecast
Keywords	NCEI ACCESSION NUMBER 0283870

Use Constraints	Cite as: Saba, Grace K.; Garzio, Lori M. (2023). Trajectory profile data from glider ru30, including pH, Total Alkalinity, and Aragonite Saturation State, deployed by Rutgers, the State University of New Jersey in the Mid-Atlantic Bight from 2022-09-06 to 2022-09-16 (NCEI Accession 0283870). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/aje1-sh14. Accessed [date].
Access Constraints	Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees	In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.

Lineage information for: dataset
Processing Steps	2023-10-19T23:10:19Z - NCEI Accession 0283870 v1.1 was published.
Output Datasets	NCEI Accession 0283870 v1.1 NCEI Accession 0283870 v1.1 (download) published 2023-10-19T23:10:19Z

Lineage information for: dataset
Processing Steps	Parameter or Variable: Profile center time; Abbreviation: profile_time; Unit: seconds since 1970-01-01; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated timestamp corresponding to the mid-point of the profile; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Profile center longitude; Abbreviation: profile_lon; Unit: degree_east; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Interpolated to provide an estimate of the longitude at the mid-point of the profile; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Profile center latitude; Abbreviation: profile_lat; Unit: degree_north; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Interpolated to provide an estimate of the latitude at the mid-point of the profile; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Profile ID; Abbreviation: profile_id; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Unique identifier of the profile. The profile ID is the mean profile timestamp; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Latitude; Abbreviation: lat; Unit: degree_north; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: m_gps_lat (measured latitude) converted to decimal degrees and interpolated; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Longitude; Abbreviation: lon; Unit: degree_east; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: m_gps_lon (measured longitude) converted to decimal degrees and interpolated; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Depth; Abbreviation: depth; Unit: meters; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated from pressure and latitude using gsw.z_from_p; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19. Parameter or Variable: Interpolated depth; Abbreviation: depth_interpolated; Unit: meters; Observation type: Glider profile trajectory; Calculation method and parameters: Linear interpolated depth using pandas.DataFrame.interpolate; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19. Parameter or Variable: Sea water pressure; Abbreviation: pressure; Unit: dbar; Observation type: Glider profile trajectory; Measured or calculated: Measured; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19. Parameter or Variable: Interpolated sea water pressure; Abbreviation: pressure_interpolated; Unit: dbar; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Linear interpolated sea water pressure used to calculate pH.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Sea water temperature; Abbreviation: temperature; Unit: degrees Celsius; Observation type: Glider profile trajectory; Measured or calculated: Measured; Calculation method and parameters: Suspect/failed IOOS QC values, and values flagged by a CTD hysteresis test have been removed.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19. Parameter or Variable: Sea water temperature - thermal lag adjusted; Abbreviation: temperature_lag_shifted; Unit: degrees Celsius; Observation type: Glider profile trajectory; Calculation method and parameters: Sea water temperature corrected for thermal lag.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Interpolated sea water temperature; Abbreviation: temperature_interpolated; Unit: degrees Celsius; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Linear interpolated sea water temperature (thermal lag adjusted) used to calculate pH; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Sea water conductivity; Abbreviation: conductivity; Unit: S m-1; Observation type: Glider profile trajectory; Measured or calculated: Measured; Calculation method and parameters: Suspect/failed IOOS QC values, and values flagged by a CTD hysteresis test have been removed.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19. Parameter or Variable: Sea water conductivity - thermal lag adjusted; Abbreviation: conductivity_lag_shifted; Unit: S m-1; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Conductivity corrected for thermal lag.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19. Parameter or Variable: Sea water density; Abbreviation: density; Unit: kg m-3; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Density calculated from temperature, practical salinity, pressure, latitude, and longitude using Gibbs gsw SA_from_SP, CT_from_t, and rho functions. Suspect/failed IOOS QC values, and values flagged by a CTD hysteresis test have been removed.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Sea water density - thermal lag adjusted; Abbreviation: density_lag_shifted; Unit: kg m-3; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Density corrected for thermal lag. Calculated using the gsw.rho function.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Sea water practical salinity; Abbreviation: salinity; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Practical salinity calculated from conductivity, temperature, and pressure using the Gibbs gsw SP_from_C function. Suspect/failed IOOS QC values, and values flagged by a CTD hysteresis test have been removed.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Sea water practical salinity - thermal lag adjusted; Abbreviation: salinity_lag_shifted; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Salinity corrected for thermal lag. Calculated using the gsw.SP_from_C function.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Interpolated sea water practical salinity; Abbreviation: salinity_interpolated; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Linear interpolated sea water practical salinity (thermal lad adjusted) used to calculate pH; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30. Parameter or Variable: Chlorophyll a; Abbreviation: chlorophyll_a; Unit: ug/l; Observation type: Glider profile trajectory; Measured or calculated: Measured; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird ECO Triplet Puck FLBBCDSLC. Measures Chlorophyll a, beta700nm, CDOM. Serial number 4653. Factory calibrated 2018-10-16.. Parameter or Variable: Optical backscatter (wavelength 700 nm) measured at 117 degrees; Abbreviation: beta_700nm; Unit: m-1 sr-1; Observation type: Glider profile trajectory; Measured or calculated: Measured; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird ECO Triplet Puck FLBBCDSLC. Measures Chlorophyll a, beta700nm, CDOM. Serial number 4653. Factory calibrated 2018-10-16.. Parameter or Variable: Colored Dissolved Organic Matter; Abbreviation: cdom; Unit: ppb; Observation type: Glider profile trajectory; Measured or calculated: Measured; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird ECO Triplet Puck FLBBCDSLC. Measures Chlorophyll a, beta700nm, CDOM. Serial number 4653. Factory calibrated 2018-10-16.. Parameter or Variable: pH reference voltage uncorrected; Abbreviation: pH_reference_voltage_raw; Unit: volts; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Raw measured pH reference voltage, no correction applied.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird Deep ISFET Ocean pH Sensor. Serial Number C18. Factory calibrated 2022-07-20. Sensor calibration coefficents: f6: -2.0148e-22, f5: 1.9642e-18, f4: -8.0469e-15, f3: 1.7577e-11, f2: -2.1352e-08, f1: 1.5163e-05, k0: -1.3935, k2: -0.0010602. Accuracy: ±0.05 Precision ±0.001; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Standardization Technique Description: For the initial calibration, the pressure response function f(P), temperature response constants k2, and conditioning offset k0 are derived in a controlled laboratory. Calibrations for f(P) and k2 are performed in a pressure vessel with a working fluid of 0.01N Hydrochloric acid (HCl). pH sensors undergo oceanographic temperature ranges (5-35°C) and pressure ranges (0-3000 psi) for 1 week. For the k0 calibration, the sensor is conditioned to natural seawater for 3-5 days before k0 is calculated. For each subsequent maintenance calibration the sensor is cleaned, the sensor is re-conditioned to natural seawater and k0 is re-calculated. The pH sensor is factory calibrated by the manufacturer at least once per year.. Parameter or Variable: pH reference voltage; Abbreviation: pH_reference_voltage_corrected; Unit: volts; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Measured pH reference voltage shifted by an optimal time shift calculated by glider segment in order to minimize separation between glider down and upcasts.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird Deep ISFET Ocean pH Sensor. Serial Number C18. Factory calibrated 2022-07-20. Sensor calibration coefficents: f6: -2.0148e-22, f5: 1.9642e-18, f4: -8.0469e-15, f3: 1.7577e-11, f2: -2.1352e-08, f1: 1.5163e-05, k0: -1.3935, k2: -0.0010602. Accuracy: ±0.05 Precision ±0.001; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Standardization Technique Description: For the initial calibration, the pressure response function f(P), temperature response constants k2, and conditioning offset k0 are derived in a controlled laboratory. Calibrations for f(P) and k2 are performed in a pressure vessel with a working fluid of 0.01N Hydrochloric acid (HCl). pH sensors undergo oceanographic temperature ranges (5-35°C) and pressure ranges (0-3000 psi) for 1 week. For the k0 calibration, the sensor is conditioned to natural seawater for 3-5 days before k0 is calculated. For each subsequent maintenance calibration the sensor is cleaned, the sensor is re-conditioned to natural seawater and k0 is re-calculated. The pH sensor is factory calibrated by the manufacturer at least once per year.; Method reference: Optimal time shifts applied in order to minimize separation between glider down and upcasts as described in Saba et al 2019 https://doi.org/10.3389/fmars.2019.00664 and Wright-Fairbanks et al 2020 https://doi.org/10.1029/2020JC016505. Parameter or Variable: pH total uncorrected; Abbreviation: pH_raw; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated from sensor calibration coefficents, interpolated pressure, interpolated salinity, interpolated temperature, and measured reference voltage. CTD variables are adjusted for thermal lag. No correction applied to calculated pH.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird Deep ISFET Ocean pH Sensor. Serial Number C18. Factory calibrated 2022-07-20. Sensor calibration coefficents: f6: -2.0148e-22, f5: 1.9642e-18, f4: -8.0469e-15, f3: 1.7577e-11, f2: -2.1352e-08, f1: 1.5163e-05, k0: -1.3935, k2: -0.0010602. Accuracy: ±0.05 Precision ±0.001; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Standardization Technique Description: For the initial calibration, the pressure response function f(P), temperature response constants k2, and conditioning offset k0 are derived in a controlled laboratory. Calibrations for f(P) and k2 are performed in a pressure vessel with a working fluid of 0.01N Hydrochloric acid (HCl). pH sensors undergo oceanographic temperature ranges (5-35°C) and pressure ranges (0-3000 psi) for 1 week. For the k0 calibration, the sensor is conditioned to natural seawater for 3-5 days before k0 is calculated. For each subsequent maintenance calibration the sensor is cleaned, the sensor is re-conditioned to natural seawater and k0 is re-calculated. The pH sensor is factory calibrated by the manufacturer at least once per year.; Uncertainty: ±0.05; Method reference: Calculations were performed in Python as described in Saba et al 2019 https://doi.org/10.3389/fmars.2019.00664. Parameter or Variable: pH total; Abbreviation: pH_corrected; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated from sensor calibration coefficents, interpolated pressure, interpolated salinity, interpolated temperature, and measured reference voltage shifted by an optimal time shift calculated by glider segment in order to minimize separation between glider down and upcasts. CTD variables are adjusted for thermal lag.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird Deep ISFET Ocean pH Sensor. Serial Number C18. Factory calibrated 2022-07-20. Sensor calibration coefficents: f6: -2.0148e-22, f5: 1.9642e-18, f4: -8.0469e-15, f3: 1.7577e-11, f2: -2.1352e-08, f1: 1.5163e-05, k0: -1.3935, k2: -0.0010602. Accuracy: ±0.05 Precision ±0.001; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Standardization Technique Description: For the initial calibration, the pressure response function f(P), temperature response constants k2, and conditioning offset k0 are derived in a controlled laboratory. Calibrations for f(P) and k2 are performed in a pressure vessel with a working fluid of 0.01N Hydrochloric acid (HCl). pH sensors undergo oceanographic temperature ranges (5-35°C) and pressure ranges (0-3000 psi) for 1 week. For the k0 calibration, the sensor is conditioned to natural seawater for 3-5 days before k0 is calculated. For each subsequent maintenance calibration the sensor is cleaned, the sensor is re-conditioned to natural seawater and k0 is re-calculated. The pH sensor is factory calibrated by the manufacturer at least once per year.; Uncertainty: ±0.05; Method reference: pH calculations were performed in Python as described in Saba et al 2019 https://doi.org/10.3389/fmars.2019.00664. Optimal time shifts applied in order to minimize separation between glider down and upcasts as described in Saba et al 2019 https://doi.org/10.3389/fmars.2019.00664 and Wright-Fairbanks et al 2020 https://doi.org/10.1029/2020JC016505. Parameter or Variable: Total alkalinity; Abbreviation: total_alkalinity; Unit: micromoles kg-1; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated from thermal lag adjusted salinity using the linear relationship (TA = 46.16 * salinity + 698.13) determined from in-situ water sampling data taken during glider deployment and recovery in addition to ship-based water samples as described in Wright-Fairbanks et al 2020 https://doi.org/10.1029/2020JC016505; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Total Alkalinity is estimated from salinity via the method described in Calculation Method and Parameters.; Method reference: Wright-Fairbanks et al 2020 https://doi.org/10.1029/2020JC016505. Parameter or Variable: Aragonite saturation state; Abbreviation: aragonite_saturation_state; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated using PyCO2SYS (Humphreys et al. (2020) https://doi.org/10.5281/zenodo.3744275, Lewis and Wallace (1998)) with inputs of corrected pH on the total scale, total alkalinity, in situ salinity_interpolated, in situ temperature_interpolated, in situ pressure_interpolated, K1 and K2 dissociation constants defined by Merbach and refit by Dickson and Millero, KSO4 dissociation constant of Dickson, KHF dissociation constant of Perez and Fraga, and borate-to-salinity ratio of Uppstrom (1979); Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Aragonite saturation state is estimated via the method described in Calculation Method and Parameters.. Parameter or Variable: Trajectory/Deployment Name; Abbreviation: trajectory; Observation type: Glider profile trajectory; Calculation method and parameters: A trajectory is a single deployment of a glider and may span multiple data files.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30 .

Lineage information for: dataset

Processing Steps

Parameter or Variable: Profile center time; Abbreviation: profile_time; Unit: seconds since 1970-01-01; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated timestamp corresponding to the mid-point of the profile; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Profile center longitude; Abbreviation: profile_lon; Unit: degree_east; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Interpolated to provide an estimate of the longitude at the mid-point of the profile; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Profile center latitude; Abbreviation: profile_lat; Unit: degree_north; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Interpolated to provide an estimate of the latitude at the mid-point of the profile; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Profile ID; Abbreviation: profile_id; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Unique identifier of the profile. The profile ID is the mean profile timestamp; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Latitude; Abbreviation: lat; Unit: degree_north; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: m_gps_lat (measured latitude) converted to decimal degrees and interpolated; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Longitude; Abbreviation: lon; Unit: degree_east; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: m_gps_lon (measured longitude) converted to decimal degrees and interpolated; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Depth; Abbreviation: depth; Unit: meters; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated from pressure and latitude using gsw.z_from_p; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19.
Parameter or Variable: Interpolated depth; Abbreviation: depth_interpolated; Unit: meters; Observation type: Glider profile trajectory; Calculation method and parameters: Linear interpolated depth using pandas.DataFrame.interpolate; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19.
Parameter or Variable: Sea water pressure; Abbreviation: pressure; Unit: dbar; Observation type: Glider profile trajectory; Measured or calculated: Measured; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19.
Parameter or Variable: Interpolated sea water pressure; Abbreviation: pressure_interpolated; Unit: dbar; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Linear interpolated sea water pressure used to calculate pH.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Sea water temperature; Abbreviation: temperature; Unit: degrees Celsius; Observation type: Glider profile trajectory; Measured or calculated: Measured; Calculation method and parameters: Suspect/failed IOOS QC values, and values flagged by a CTD hysteresis test have been removed.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19.
Parameter or Variable: Sea water temperature - thermal lag adjusted; Abbreviation: temperature_lag_shifted; Unit: degrees Celsius; Observation type: Glider profile trajectory; Calculation method and parameters: Sea water temperature corrected for thermal lag.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Interpolated sea water temperature; Abbreviation: temperature_interpolated; Unit: degrees Celsius; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Linear interpolated sea water temperature (thermal lag adjusted) used to calculate pH; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Sea water conductivity; Abbreviation: conductivity; Unit: S m-1; Observation type: Glider profile trajectory; Measured or calculated: Measured; Calculation method and parameters: Suspect/failed IOOS QC values, and values flagged by a CTD hysteresis test have been removed.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19.
Parameter or Variable: Sea water conductivity - thermal lag adjusted; Abbreviation: conductivity_lag_shifted; Unit: S m-1; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Conductivity corrected for thermal lag.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird GPCTD Pumped Conductivity, Temperature, Depth (CTD) Sensor. Serial Number 9417P. Factory calibrated 2022-06-19.
Parameter or Variable: Sea water density; Abbreviation: density; Unit: kg m-3; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Density calculated from temperature, practical salinity, pressure, latitude, and longitude using Gibbs gsw SA_from_SP, CT_from_t, and rho functions. Suspect/failed IOOS QC values, and values flagged by a CTD hysteresis test have been removed.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Sea water density - thermal lag adjusted; Abbreviation: density_lag_shifted; Unit: kg m-3; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Density corrected for thermal lag. Calculated using the gsw.rho function.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Sea water practical salinity; Abbreviation: salinity; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Practical salinity calculated from conductivity, temperature, and pressure using the Gibbs gsw SP_from_C function. Suspect/failed IOOS QC values, and values flagged by a CTD hysteresis test have been removed.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Sea water practical salinity - thermal lag adjusted; Abbreviation: salinity_lag_shifted; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Salinity corrected for thermal lag. Calculated using the gsw.SP_from_C function.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Interpolated sea water practical salinity; Abbreviation: salinity_interpolated; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Linear interpolated sea water practical salinity (thermal lad adjusted) used to calculate pH; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30.
Parameter or Variable: Chlorophyll a; Abbreviation: chlorophyll_a; Unit: ug/l; Observation type: Glider profile trajectory; Measured or calculated: Measured; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird ECO Triplet Puck FLBBCDSLC. Measures Chlorophyll a, beta700nm, CDOM. Serial number 4653. Factory calibrated 2018-10-16..
Parameter or Variable: Optical backscatter (wavelength 700 nm) measured at 117 degrees; Abbreviation: beta_700nm; Unit: m-1 sr-1; Observation type: Glider profile trajectory; Measured or calculated: Measured; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird ECO Triplet Puck FLBBCDSLC. Measures Chlorophyll a, beta700nm, CDOM. Serial number 4653. Factory calibrated 2018-10-16..
Parameter or Variable: Colored Dissolved Organic Matter; Abbreviation: cdom; Unit: ppb; Observation type: Glider profile trajectory; Measured or calculated: Measured; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird ECO Triplet Puck FLBBCDSLC. Measures Chlorophyll a, beta700nm, CDOM. Serial number 4653. Factory calibrated 2018-10-16..
Parameter or Variable: pH reference voltage uncorrected; Abbreviation: pH_reference_voltage_raw; Unit: volts; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Raw measured pH reference voltage, no correction applied.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird Deep ISFET Ocean pH Sensor. Serial Number C18. Factory calibrated 2022-07-20. Sensor calibration coefficents: f6: -2.0148e-22, f5: 1.9642e-18, f4: -8.0469e-15, f3: 1.7577e-11, f2: -2.1352e-08, f1: 1.5163e-05, k0: -1.3935, k2: -0.0010602. Accuracy: ±0.05 Precision ±0.001; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Standardization Technique Description: For the initial calibration, the pressure response function f(P), temperature response constants k2, and conditioning offset k0 are derived in a controlled laboratory. Calibrations for f(P) and k2 are performed in a pressure vessel with a working fluid of 0.01N Hydrochloric acid (HCl). pH sensors undergo oceanographic temperature ranges (5-35°C) and pressure ranges (0-3000 psi) for 1 week. For the k0 calibration, the sensor is conditioned to natural seawater for 3-5 days before k0 is calculated. For each subsequent maintenance calibration the sensor is cleaned, the sensor is re-conditioned to natural seawater and k0 is re-calculated. The pH sensor is factory calibrated by the manufacturer at least once per year..
Parameter or Variable: pH reference voltage; Abbreviation: pH_reference_voltage_corrected; Unit: volts; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Measured pH reference voltage shifted by an optimal time shift calculated by glider segment in order to minimize separation between glider down and upcasts.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird Deep ISFET Ocean pH Sensor. Serial Number C18. Factory calibrated 2022-07-20. Sensor calibration coefficents: f6: -2.0148e-22, f5: 1.9642e-18, f4: -8.0469e-15, f3: 1.7577e-11, f2: -2.1352e-08, f1: 1.5163e-05, k0: -1.3935, k2: -0.0010602. Accuracy: ±0.05 Precision ±0.001; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Standardization Technique Description: For the initial calibration, the pressure response function f(P), temperature response constants k2, and conditioning offset k0 are derived in a controlled laboratory. Calibrations for f(P) and k2 are performed in a pressure vessel with a working fluid of 0.01N Hydrochloric acid (HCl). pH sensors undergo oceanographic temperature ranges (5-35°C) and pressure ranges (0-3000 psi) for 1 week. For the k0 calibration, the sensor is conditioned to natural seawater for 3-5 days before k0 is calculated. For each subsequent maintenance calibration the sensor is cleaned, the sensor is re-conditioned to natural seawater and k0 is re-calculated. The pH sensor is factory calibrated by the manufacturer at least once per year.; Method reference: Optimal time shifts applied in order to minimize separation between glider down and upcasts as described in Saba et al 2019 https://doi.org/10.3389/fmars.2019.00664 and Wright-Fairbanks et al 2020 https://doi.org/10.1029/2020JC016505.
Parameter or Variable: pH total uncorrected; Abbreviation: pH_raw; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated from sensor calibration coefficents, interpolated pressure, interpolated salinity, interpolated temperature, and measured reference voltage. CTD variables are adjusted for thermal lag. No correction applied to calculated pH.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird Deep ISFET Ocean pH Sensor. Serial Number C18. Factory calibrated 2022-07-20. Sensor calibration coefficents: f6: -2.0148e-22, f5: 1.9642e-18, f4: -8.0469e-15, f3: 1.7577e-11, f2: -2.1352e-08, f1: 1.5163e-05, k0: -1.3935, k2: -0.0010602. Accuracy: ±0.05 Precision ±0.001; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Standardization Technique Description: For the initial calibration, the pressure response function f(P), temperature response constants k2, and conditioning offset k0 are derived in a controlled laboratory. Calibrations for f(P) and k2 are performed in a pressure vessel with a working fluid of 0.01N Hydrochloric acid (HCl). pH sensors undergo oceanographic temperature ranges (5-35°C) and pressure ranges (0-3000 psi) for 1 week. For the k0 calibration, the sensor is conditioned to natural seawater for 3-5 days before k0 is calculated. For each subsequent maintenance calibration the sensor is cleaned, the sensor is re-conditioned to natural seawater and k0 is re-calculated. The pH sensor is factory calibrated by the manufacturer at least once per year.; Uncertainty: ±0.05; Method reference: Calculations were performed in Python as described in Saba et al 2019 https://doi.org/10.3389/fmars.2019.00664.
Parameter or Variable: pH total; Abbreviation: pH_corrected; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated from sensor calibration coefficents, interpolated pressure, interpolated salinity, interpolated temperature, and measured reference voltage shifted by an optimal time shift calculated by glider segment in order to minimize separation between glider down and upcasts. CTD variables are adjusted for thermal lag.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Analyzing instrument: Sea-Bird Deep ISFET Ocean pH Sensor. Serial Number C18. Factory calibrated 2022-07-20. Sensor calibration coefficents: f6: -2.0148e-22, f5: 1.9642e-18, f4: -8.0469e-15, f3: 1.7577e-11, f2: -2.1352e-08, f1: 1.5163e-05, k0: -1.3935, k2: -0.0010602. Accuracy: ±0.05 Precision ±0.001; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Standardization Technique Description: For the initial calibration, the pressure response function f(P), temperature response constants k2, and conditioning offset k0 are derived in a controlled laboratory. Calibrations for f(P) and k2 are performed in a pressure vessel with a working fluid of 0.01N Hydrochloric acid (HCl). pH sensors undergo oceanographic temperature ranges (5-35°C) and pressure ranges (0-3000 psi) for 1 week. For the k0 calibration, the sensor is conditioned to natural seawater for 3-5 days before k0 is calculated. For each subsequent maintenance calibration the sensor is cleaned, the sensor is re-conditioned to natural seawater and k0 is re-calculated. The pH sensor is factory calibrated by the manufacturer at least once per year.; Uncertainty: ±0.05; Method reference: pH calculations were performed in Python as described in Saba et al 2019 https://doi.org/10.3389/fmars.2019.00664. Optimal time shifts applied in order to minimize separation between glider down and upcasts as described in Saba et al 2019 https://doi.org/10.3389/fmars.2019.00664 and Wright-Fairbanks et al 2020 https://doi.org/10.1029/2020JC016505.
Parameter or Variable: Total alkalinity; Abbreviation: total_alkalinity; Unit: micromoles kg-1; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated from thermal lag adjusted salinity using the linear relationship (TA = 46.16 * salinity + 698.13) determined from in-situ water sampling data taken during glider deployment and recovery in addition to ship-based water samples as described in Wright-Fairbanks et al 2020 https://doi.org/10.1029/2020JC016505; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Total Alkalinity is estimated from salinity via the method described in Calculation Method and Parameters.; Method reference: Wright-Fairbanks et al 2020 https://doi.org/10.1029/2020JC016505.
Parameter or Variable: Aragonite saturation state; Abbreviation: aragonite_saturation_state; Observation type: Glider profile trajectory; Measured or calculated: Calculated; Calculation method and parameters: Calculated using PyCO2SYS (Humphreys et al. (2020) https://doi.org/10.5281/zenodo.3744275, Lewis and Wallace (1998)) with inputs of corrected pH on the total scale, total alkalinity, in situ salinity_interpolated, in situ temperature_interpolated, in situ pressure_interpolated, K1 and K2 dissociation constants defined by Merbach and refit by Dickson and Millero, KSO4 dissociation constant of Dickson, KHF dissociation constant of Perez and Fraga, and borate-to-salinity ratio of Uppstrom (1979); Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30; Detailed sampling and analyzing information: Once the glider is deployed it completes vertical profiles to collect data throughout the water column. The pH sensor (sampling rate 1 Hz) is coupled to a CTD unit (sampling rate 0.5 Hz) on the glider to provide simultaneous measurements of measured reference voltage, salinity, pressure, and temperature. Aragonite saturation state is estimated via the method described in Calculation Method and Parameters..
Parameter or Variable: Trajectory/Deployment Name; Abbreviation: trajectory; Observation type: Glider profile trajectory; Calculation method and parameters: A trajectory is a single deployment of a glider and may span multiple data files.; Sampling instrument: Teledyne Webb Research Slocum G2 glider ru30 .

Acquisition Information (collection)
Instrument	carbon dioxide (CO2) gas analyzer salinometer temperature sensor titrator
Platform	RU30

Last Modified: 2024-04-02T19:42:59Z
For questions about the information on this page, please email: ncei.info@noaa.gov

Trajectory profile data from glider ru30, including pH, Total Alkalinity, and Aragonite Saturation State, deployed by Rutgers, the State University of New Jersey in the Mid-Atlantic Bight from 2022-09-06 to 2022-09-16 (NCEI Accession 0283870)

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