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| Dataset Title: | NOAA OAP Seasonal pH Glider Groundtruthing
|
| Institution: | Rutgers University (Dataset ID: noaa-oap_pH_glider_groundtruthing) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Files
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Attributes {
s {
obs {
Float64 _FillValue 9223372036854775807;
Float64 actual_range 0, 58;
String ioos_category "Unknown";
String long_name "Obs";
}
glider_trajectory {
String description "Glider deployment/trajectory ID";
String ioos_category "Unknown";
String long_name "Glider Trajectory";
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.61435814e+9, 1.6678485e+9;
String axis "T";
String calendar "gregorian";
String description "Timestamp of glider sample";
String ioos_category "Time";
String long_name "Time (Glider)";
String source_name "glider_time";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
}
sampling_time {
Float64 actual_range 1.6143552e+9, 1.6678494e+9;
String calendar "gregorian";
String description "Timestamp of the discrete water sample collection";
String ioos_category "Time";
String long_name "Time (Water Sample)";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
}
longitude_glider {
Float32 _FillValue -9999.0;
Float32 actual_range -74.3439, -73.7151;
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String description "Longitude of the glider";
String ioos_category "Location";
String long_name "Longitude (Glider)";
String standard_name "longitude";
String units "degrees_east";
}
latitude_glider {
Float32 _FillValue -9999.0;
Float32 actual_range 39.3032, 40.4272;
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String description "Latitude of the glider";
String ioos_category "Location";
String long_name "Latitude (Glider)";
String standard_name "latitude";
String units "degrees_north";
}
longitude {
String _CoordinateAxisType "Lon";
Float32 _FillValue -9999.0;
Float32 actual_range -74.342, -73.748;
String axis "X";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String description "Longitude of the discrete water sample collection";
String ioos_category "Location";
String long_name "Longitude (Water Sample)";
String standard_name "longitude";
String units "degrees_east";
}
latitude {
String _CoordinateAxisType "Lat";
Float32 _FillValue -9999.0;
Float32 actual_range 39.3313, 40.3586;
String axis "Y";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String description "Latitude of the discrete water sample collection";
String ioos_category "Location";
String long_name "Latitude (Water Sample)";
String standard_name "latitude";
String units "degrees_north";
}
cruise_type {
String description "Glider deployment or recovery";
String ioos_category "Unknown";
String long_name "Cruise Type";
}
cast_number {
Float32 _FillValue -9999.0;
Float32 actual_range 1.0, 4.0;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String description "Replicate cast number of the discrete water sampling apparatus (CTD rosette or Niskin bottle)";
String ioos_category "Statistics";
String long_name "Cast Number";
}
distance {
Float32 _FillValue -9999.0;
Float32 actual_range 25.0, 956.0;
String description "Distance calculated between the glider coordinates and water sampling coordinates";
String ioos_category "Unknown";
String long_name "Distance";
String units "m";
}
depth {
String _CoordinateAxisType "Height";
String _CoordinateZisPositive "down";
Float32 _FillValue -9999.0;
Float32 actual_range 0.0, 21.0;
String axis "Z";
Float64 colorBarMaximum 8000.0;
Float64 colorBarMinimum -8000.0;
String colorBarPalette "TopographyDepth";
String description "Depth at which water samples and glider measurements were taken";
String ioos_category "Location";
String long_name "Depth";
String positive "down";
String standard_name "depth";
String units "m";
}
pH_glider {
Float32 _FillValue -9999.0;
Float32 actual_range 7.843, 8.127;
Float64 colorBarMaximum 9.0;
Float64 colorBarMinimum 7.0;
String description "Median pH measured by the glider at depth +/- 1m";
String ioos_category "Salinity";
String long_name "pH (Glider)";
String standard_name "sea_water_ph_reported_on_total_scale";
String units "1";
}
pH_discrete {
Float32 _FillValue -9999.0;
Float32 actual_range 7.784, 8.122;
Float64 colorBarMaximum 9.0;
Float64 colorBarMinimum 7.0;
String description "pH measured from discrete water samples, laboratory value was corrected for temperature, pressure, and salinity using pyCO2SYS";
String ioos_category "Salinity";
String long_name "pH (Water Sample)";
String standard_name "sea_water_ph_reported_on_total_scale";
String units "1";
}
pH_diff {
Float32 _FillValue -9999.0;
Float32 actual_range -0.065, 0.088;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum -10.0;
String description "pH_glider minus pH_discrete";
String ioos_category "Salinity";
String long_name "pH Difference";
String units "1";
}
TA_glider {
Float32 _FillValue -9999.0;
Float32 actual_range 1994.0, 2220.0;
String description "Calculated from glider-based salinity using a linear relationship 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. This value is median glider-based TA at depth +/- 1m";
String ioos_category "CO2";
String long_name "Total Alkalinity (Glider)";
String units "micromoles kg-1";
}
TA_discrete {
Float32 _FillValue -9999.0;
Float32 actual_range 1909.0, 2231.0;
String description "Total alkalinity measured from discrete water samples";
String ioos_category "CO2";
String long_name "Total Alkalinity (Water Sample)";
String units "micromoles kg-1";
}
TA_diff {
Float32 _FillValue -9999.0;
Float32 actual_range -75.0, 86.0;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum -10.0;
String description "TA_glider minus TA_discrete";
String ioos_category "CO2";
String long_name "Total Alkalinity Difference";
String units "micromoles kg-1";
}
temperature_glider {
Float32 _FillValue -9999.0;
Float32 actual_range 4.2, 25.0;
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 0.0;
String description "Median sea water temperature measured by the glider at depth +/- 1m";
String ioos_category "Temperature";
String long_name "Sea Water Temperature (Glider)";
String standard_name "sea_water_temperature";
String units "degree_C";
}
temperature_discrete {
Float32 _FillValue -9999.0;
Float32 actual_range 4.2, 24.9;
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 0.0;
String description "Sea water temperature of the discrete water sample";
String ioos_category "Temperature";
String long_name "Sea Water Temperature (Water Sample)";
String standard_name "sea_water_temperature";
String units "degree_C";
}
salinity_glider {
Float32 _FillValue -9999.0;
Float32 actual_range 28.97, 32.97;
Float64 colorBarMaximum 37.0;
Float64 colorBarMinimum 32.0;
String description "Median glider-based salinity at depth +/- 1m";
String ioos_category "Salinity";
String long_name "Salinity (Glider)";
String standard_name "sea_water_practical_salinity";
String units "1";
}
salinity_discrete {
Float32 _FillValue -9999.0;
Float32 actual_range 28.95, 33.03;
Float64 colorBarMaximum 37.0;
Float64 colorBarMinimum 32.0;
String description "Salinity of the discrete water sample";
String ioos_category "Salinity";
String long_name "Salinity (Water Sample)";
String standard_name "sea_water_practical_salinity";
String units "1";
}
notes {
String ioos_category "Unknown";
String long_name "Notes";
}
}
NC_GLOBAL {
String acknowledgement "Funding provided by the NOAA Ocean Acidification Program and U.S. Integrated Ocean Observing System";
String cdm_data_type "Point";
String comment "Comparisons between data recorded by gliders and discrete water samples taken at glider deployments and recoveries. Water samples were collected via Niskin bottles mounted on a CTD-rosette, or via individual Niskin bottle casts. pH (on the Total pH scale) of water samples was measured spectrophotometrically at 25°C with purified meta-cresol purple (mCP, Liu et al. 2011) using 10 cm pathlength cylindrical glass cells and an Agilent Technologies Cary 8454 UV-Vis spectrometer. pH was calculated according to the equations presented in Douglas and Byrne (2017). Total alkalinity (TA) titrations for water samples were performed by a custom-built titration apparatus, following the approach of Standard Operating Procedure 3b (Dickson et al. 2007). Discrete pH samples were corrected for temperature, pressure, and salinity using pyCO2SYS before comparing to glider data.";
String contributor_name "Grace Saba, Chris Hunt, Dave Aragon, Nicole Waite, Brian Buckingham, Chip Haldeman, John Kerfoot, Lori Garzio, Laura Nazzaro, Elizabeth Wright-Fairbanks";
String contributor_role "Principal Investigator, Senior Personnel, Glider Pilot, Glider Pilot and Field Technician, Glider Pilot and Field Technician, Vessel Captain, Data Management, Data Management, Data Management, Graduate Student";
String Conventions "ACDD 1.3, COARDS, CF-1.10";
String creator_email "lgarzio@marine.rutgers.edu";
String creator_institution "Rutgers University";
String creator_name "Lori Garzio";
String creator_type "person";
String creator_url "https://marine.rutgers.edu/main/";
Float64 Easternmost_Easting -73.748;
String featureType "Point";
String geospatial_bounds_crs "EPSG:6347";
Float64 geospatial_lat_max 40.3586;
Float64 geospatial_lat_min 39.3313;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -73.748;
Float64 geospatial_lon_min -74.342;
String geospatial_lon_units "degrees_east";
Float64 geospatial_vertical_max 21.0;
Float64 geospatial_vertical_min 0.0;
String geospatial_vertical_positive "down";
String geospatial_vertical_units "m";
String history
"2024-10-06T07:31:21Z (local files)
2024-10-06T07:31:21Z https://rucool-sampling.marine.rutgers.edu/erddap/tabledap/noaa-oap_pH_glider_groundtruthing.html";
String id "noaa-oap_pH_glider_groundtruthing";
String infoUrl "https://marine.rutgers.edu/";
String institution "Rutgers University";
String keywords "alkalinity, carbon, carbon dioxide, cast, cast_number, centers, chemistry, co2, conductivity, cruise, cruise_type, ctd, data, density, depth, difference, dioxide, distance, earth, Earth Science > Oceans > Ocean Chemistry > pH, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Salinity, environmental, glider, glider_trajectory, groundtruthing, information, latitude, latitude_glider, longitude, longitude_glider, national, ncei, nesdis, noaa, notes, number, oap, obs, observations, ocean, oceans, pH_diff, pH_discrete, pH_glider, practical, reported, rutgers, salinity, salinity_discrete, salinity_glider, sample, sampling_time, scale, science, sea, sea_water_ph_reported_on_total_scale, sea_water_practical_salinity, sea_water_temperature, seasonal, seawater, sonde, statistics, TA_diff, TA_discrete, TA_glider, temperature, temperature_discrete, temperature_glider, time, total, trajectory, type, university, water";
String keywords_vocabulary "GCMD Science Keywords";
String license "see Data Use Agreement";
Float64 Northernmost_Northing 40.3586;
String processing_level "Discrete pH samples were corrected for temperature, pressure, and salinity using pyCO2SYS. The closest glider profile was determined using glider profile time and coordinates compared to the discrete water sampling time and coordinates. Glider data were subsampled by taking the median of the glider data recorded at +/- 1m of the discrete sampling depth.";
String program "Collaborative Research: Optimizing Ocean Acidification Observations for Model Parameterization in the Coupled Slope Water System of the U.S. Northeast Large Marine Ecosystem, Sustained Underwater Glider Observations for Improving Atlantic Tropical Cyclone Intensity Forecast - AOML/OAR";
String project "NOAA OAP (Ocean Acidification Program)/IOOS, Sustained Underwater Glider Observations for Improving Atlantic Tropical Cyclone Intensity Forecast";
String publisher_email "lgarzio@marine.rutgers.edu";
String publisher_institution "Rutgers University";
String publisher_name "Lori Garzio";
String publisher_type "person";
String references "Saba et al 2019 https://doi.org/10.3389/fmars.2019.00664; Wright-Fairbanks et al 2020 https://doi.org/10.1029/2020JC016505; PyCO2SYS (Humphreys et al. (2020) doi:10.5281/zenodo.3744275; Lewis and Wallace (1998)); Liu et al 2011 https://doi.org/10.4319/lo.1998.43.4.0657; Douglas and Byrne 2017 https://doi.org/10.1016/j.marchem.2017.02.004; Dickson, A.G., Sabine, C.L. and Christian, J.R. (Eds.) 2007. Guide to best practices for ocean CO2 measurements. PICES Special Publication 3, 191 pp. (\"Guide\" in one PDF file)";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 39.3313;
String standard_name_vocabulary "CF Standard Name Table v70";
String summary "This project conducted seasonal glider deployments to investigate carbonate chemistry and monitor ocean acidification in the Mid-Atlantic Bight. Gliders were deployed with an integrated deep rated version of the Ion Sensitive Field Effect Transistor (ISFET)-based pH sensor. The pH sensor unit was complemented with existing glider sensors including a Conductivity, Temperature, Depth (CTD), a WETLabs FLBBCD ECO puck configured for simultaneous chlorophyll fluorescence and optical backscatter measurements, and an Aanderaa Optode for measuring dissolved oxygen. This is the comparison between pH data recorded by gliders and discrete water samples taken at glider deployments and recoveries. Full-resolution glider datasets can be downloaded via the National Centers for Environmental Information (NCEI) Ocean Carbon and Acidification Data System (https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system).";
String time_coverage_end "2022-11-07T19:15:00Z";
String time_coverage_start "2021-02-26T16:49:00Z";
String title "NOAA OAP Seasonal pH Glider Groundtruthing";
Float64 Westernmost_Easting -74.342;
}
}
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