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| Dataset Title: | Physico-Chemical and Carbonate Chemistry Parameters in the Shallow Coastal Zone of Pointe-au-Père (St. Lawrence Estuary) : High Frequency Measurement 
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| Institution: | Institut des sciences de la mer (Dataset ID: ismerCarbonateChemistryPointeAuPereHF) |
| Range: | longitude = -68.47045 to -68.47045°E, latitude = 48.51805 to 48.51805°N, time = 2023-07-03T18:00:00Z to 2024-10-22T12:15:00Z |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
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| Data Access Form
| Files
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Zoom: ![[The graph you specified. Please be patient.]](https://erddap.cioos.ca/erddap/tabledap/ismerCarbonateChemistryPointeAuPereHF.png?longitude,latitude,pH_voltage&time%3E=2023-07-03T18%3A00%3A00Z&.draw=linesAndMarkers&.marker=5%7C5&.color=0x000000&.colorBar=%7C%7C%7C%7C%7C&.bgColor=0xffffffff)
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Attributes {
s {
measurementID {
String ioos_category "Identifier";
String long_name "Mesurement identifier";
String name "measurementID";
String units "unitless";
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.6884072e+9, 1.7295993e+9;
String axis "T";
String cf_role "timeseries_id";
String coverage_content_type "coordinate";
String datatype "string";
String ioos_category "Time";
String long_name "Time";
String standard_name "time";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0115/";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
}
latitude {
String _CoordinateAxisType "Lat";
Float32 _FillValue 1.0e+36;
Float32 actual_range 48.51805, 48.51805;
String axis "Y";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String description "Latitude coordinates of the measurement sites in decimal degrees (degrees north)";
String ioos_category "Location";
String long_name "Latitude";
Float32 missing_value NaN;
String name "lat";
String standard_name "latitude";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/";
String units "degrees_north";
}
longitude {
String _CoordinateAxisType "Lon";
Float32 _FillValue 1.0e+36;
Float32 actual_range -68.47045, -68.47045;
String axis "X";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String description "Longitude coordinates of the measurement sites in decimal degrees (degrees east)";
String ioos_category "Location";
String long_name "Longitude";
Float32 missing_value NaN;
String name "lon";
String standard_name "longitude";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0554/";
String units "degrees_east";
}
pH_voltage {
Float32 _FillValue 1.0e+36;
Float32 actual_range -127.3008, -26.65706;
Float64 colorBarMaximum -26.0;
Float64 colorBarMinimum -128.0;
String colorBarPalette "YellowRed";
String description "Voltage measurement on the Hobo® pH probe";
String ioos_category "Other";
String long_name "Raw pH voltage";
String name "pH_voltage";
String original_name "pH (mV)";
String standard_name_nerc "instrument_output_by_ph_sensor";
String standard_name_nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PVLTGC01/";
String units "mV";
}
pH_total_scale {
Float32 _FillValue 1.0e+36;
Float32 actual_range 7.082, 8.886;
Float64 colorBarMaximum 9.0;
Float64 colorBarMinimum 7.0;
String colorBarPalette "YellowRed";
String description
"The Hobo® pH voltage measurements (mV) were converted to pH on the total scale (pHT) using a multi-step calibration with TRIS buffer solutions. The values were then converted using the Nernst equation, where pHT(TRIS) is the theoretical pHT of TRIS at the measurement temperature, R is the universal gas constant, T is the temperature in Kelvin, and F is Faraday’s constant.
pHT = pHT(TRIS) + ((mV\"TRIS\" /1000- mV\"sample\" /1000))/(R*T* (ln(10) /F))";
String ioos_category "Other";
String long_name "Total-scale pH";
String name "pH_total_scale";
String original_name "pH (total scale)";
String standard_name "sea_water_ph_reported_on_total_scale";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CF14N56/";
String units "dimensionless";
}
TE90 {
Float32 _FillValue 1.0e+36;
Float32 actual_range 4.0, 16.332;
Float64 colorBarMaximum 17.0;
Float64 colorBarMinimum 4.0;
String colorBarPalette "KT_thermal";
String ioos_category "Temperature";
String long_name "Temperature (ITS-90)";
String name "TE90";
String original_name "Temperature (°C)";
String standard_name "sea_water_temperature";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0335/";
String units "degree_C";
String units_metadata "on_scale";
}
PSAL {
Float32 _FillValue 1.0e+36;
Float32 actual_range 4.15, 32.0;
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 4.0;
String colorBarPalette "KT_haline";
String comment "PSS-78";
String ioos_category "Salinity";
String long_name "Practical salinity";
String name "PSAL";
String original_name "Practical Salinity";
String standard_name "sea_water_practical_salinity";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/IADIHDIJ/";
String units "PSU";
}
light_surface {
Float32 _FillValue 1.0e+36;
Float32 actual_range 0.0, 44089.2;
Float64 colorBarMaximum 44090.0;
Float64 colorBarMinimum 0.1;
String colorBarPalette "KT_solar";
String colorBarScale "Log";
String ioos_category "Optical Properties";
String long_name "Light";
String name "light_surface";
String original_name "Light (lux)";
String standard_name "solar_irradiance";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/WC485N1Y/";
String units "lx";
}
PAR {
Float32 _FillValue 1.0e+36;
Float32 actual_range 0.0, 1600.438;
Float64 colorBarMaximum 1600.0;
Float64 colorBarMinimum 0.1;
String colorBarPalette "KT_solar";
String colorBarScale "Log";
String description "The lighting data were converted to Photosynthetic Active Radiation (PAR) using a linear calibration performed with a miniPAR sensor. This calibration was carried out by simultaneously measuring light intensity and PAR values at seven light levels, using neutral grey filters in a seawater-filled aquarium under natural sunlight.";
String ioos_category "Optical Properties";
String long_name "Photosynthetically active radiation";
String name "PAR";
String original_name "Light_PAR (μmol photons m−2 s−1)";
String standard_name "downwelling_photosynthetic_photon_radiance_in_sea_water";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0677/";
String units "μmol photons m−2 s−1";
}
PRES {
Float32 _FillValue 1.0e+36;
Float32 actual_range 106.574, 156.307;
Float64 colorBarMaximum 156.5;
Float64 colorBarMinimum 106.5;
String colorBarPalette "KT_deep";
String ioos_category "Pressure";
String long_name "Sea pressure";
String name "PRES";
String original_name "Abs Pressure (kPa)";
String standard_name "sea_water_pressure";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0330/";
String units "decibars";
}
water_level {
Float32 _FillValue 1.0e+36;
Float32 actual_range 0.5, 5.65;
Float64 colorBarMaximum 5.7;
Float64 colorBarMinimum 0.0;
String colorBarPalette "KT_deep";
String description "Based on absolute pressure corrected for atmospheric pressure as measured at the Pointe-au-Père's weather station (Qc, Canada - ID 7056068). The depth was calculated using the hydrostatic pressure equation: h = P(réelle)/ ρ * g, where h refers to height, P(réelle) is pressure of the water, ρ is the seawater density, and g is the acceleration due to gravity (9.807 m/s²).";
String ioos_category "Other";
String long_name "Sea water level";
String name "water_level";
String original_name "Water_level (m)";
String standard_name "sea_surface_height_above_geoid";
String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0374/";
String units "m";
}
omega_aragonite {
Float32 _FillValue 1.0e+36;
Float32 actual_range 0.2061027, 6.638475;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.1;
String colorBarPalette "KT_balance";
String colorBarScale "Log";
String description "The values for the saturation state of calcium carbonates were calculated from the “total alkalinity” and “pH” (total scale) couple using the CO2Sys software (Excel v3.0), with the dissociation constants from Cai and Wang (1988), Dickson (1990), Perez and Fraga (1987), as well as the report on borates by Lee et al. (2010).";
String ioos_category "Other";
String long_name "Aragonite saturation state";
String name "omega_aragonite";
String original_name "Omega aragonite";
String units "dimensionless";
}
omega_calcite {
Float32 _FillValue 1.0e+36;
Float32 actual_range 0.3299933, 10.6398;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.1;
String colorBarPalette "KT_balance";
String colorBarScale "Log";
String description "The values for the saturation state of calcium carbonates were calculated from the “total alkalinity” and “pH” (total scale) couple using the CO2Sys software (Excel v3.0), with the dissociation constants from Cai and Wang (1988), Dickson (1990), Perez and Fraga (1987), as well as the report on borates by Lee et al. (2010).";
String ioos_category "Other";
String long_name "Calcite saturation state";
String name "omega_calcite";
String original_name "Omega calcite";
String units "dimensionless";
}
}
NC_GLOBAL {
String cdm_data_type "TimeSeries";
String cdm_timeseries_variables "time";
String contributor_institution "(1 - 3) Institut des sciences de la mer";
String contributor_name "(1) Johanna Vega-Sequeda, (2) Gwénaëlle Chaillou, (3) Fanny Noisette";
String contributor_role "(1) author, Metadata custodian, Data Owner, Point of contact ; (2) co-author, (3) co-author, Data Owner, Point of contact";
String contributor_type "person";
String Conventions "CF-1.11 COARDS ACDD-1.3, NCCSV-1.2";
String creator_identifier "https://orcid.org/0000-0003-2507-8560";
String creator_name "Johanna Vega-Sequeda";
String creator_type "person";
String defaultDataQuery "&time>=min(time)";
String defaultGraphQuery "&time>=min(time)&.draw=linesAndMarkers&.bgColor=0xffffffff";
Float64 Easternmost_Easting -68.47045;
String featureType "TimeSeries";
Float64 geospatial_lat_max 48.51805;
Float64 geospatial_lat_min 48.51805;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -68.47045;
Float64 geospatial_lon_min -68.47045;
String geospatial_lon_units "degrees_east";
String grid_mapping_epsg_code "EPSG:4326";
String grid_mapping_epsg_code_url "https://epsg.io/4326";
String grid_mapping_geographic_crs_name "WGS 84";
String grid_mapping_inverse_flattening "298.2572236";
String grid_mapping_name "latitude_longitude";
String grid_mapping_prime_meridian_name "Greenwich";
String grid_mapping_semi_major_axis "6378137";
String history
"2026-08-18T00:47:00Z (local files)
2026-08-18T00:47:00Z http://erddap.cioos.ca/tabledap/ismerCarbonateChemistryPointeAuPereHF.das";
String infoUrl "https://doi.org/10.26071/80865272-7dcf-4dc4";
String institution "Institut des sciences de la mer";
String keywords "aragonite, carbonate system parameter, coastal zone, high frequency measurement, inorganic carbon, pH, physical chemical, sea surface height, sea surface salinity, sea surface temperature";
String keywords_vocabulary "GCMD Science Keywords";
String license "Creative Commons Attribution 4.0 International license CC-BY 4.0";
String licenseUrl "https://creativecommons.org/licenses/by/4.0/";
String marine_region "St. Lawrence Estuary";
String marine_region_identifier "http://marineregions.org/mrgid/23554";
Float64 Northernmost_Northing 48.51805;
String platform "mooring";
String platform_description "The sensor array was attached to a mooring consisting of a rectangular PVC board anchored to a weight block to prevent displacement by tidal currents and wave action.";
String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 48.51805;
String standard_name_nerc_vocabulary "The NERC Vocabulary Server (NVS)";
String standard_name_vocabulary "CF Standard Name Table v90";
String summary "This dataset includes all physicochemical parameters measured during the ice-free months: from July 3 to September 26, 2023, and from May 10 to October 22, 2024, at a maximum depth of 5.5 m at high tide. During these periods, high-frequency measurements were taken every 15 minutes using an autonomous logger (HOBO®) attached to a mooring to record pH, practical salinity, light, temperature, and water level. Note that in 2024, data are missing from May 15 to 21 due to partial burial caused by a significant episode of sediment resuspension.";
String time_coverage_end "2024-10-22T12:15:00Z";
String time_coverage_start "2023-07-03T18:00:00Z";
String title "Physico-Chemical and Carbonate Chemistry Parameters in the Shallow Coastal Zone of Pointe-au-Père (St. Lawrence Estuary) : High Frequency Measurement";
Float64 Westernmost_Easting -68.47045;
}
}
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