Data Dictionary
Column Type Label Description Units Media type Result Value Type Statistic Applied
cruise text Cruise

The name or identifier of the research cruise during which the CTD cast was collected.

Seawater actual
station text Station

The name or identifier of the sampling site at which the CTD cast was collected.

Seawater actual
cast numeric Cast
timestamp timestamp Date and Time

The combined date and time of the measurement in Coordinated Universal Time.

utc Seawater actual
year numeric Year

Year of the measurement in Coordinated Universal Time.

utc Seawater actual
month numeric Month

Month of the measurement in Coordinated Universal Time.

utc Seawater actual
day numeric Day

Day of the measurement in Coordinated Universal Time.

utc Seawater actual
hour numeric Hour

Hour of the measurement in Coordinated Universal Time.

utc Seawater actual
minute numeric Minute

Minute of the measurement in Coordinated Universal Time.

utc Seawater actual
second numeric Second

Second of the measurement in Coordinated Universal Time.

utc Seawater actual
latitude numeric Latitude

The latitude at the start of the cast.

degrees north Seawater actual
longitude numeric Longitude

The longitude at the start of the cast.

degrees east Seawater actual
bot_depth numeric Bottom Depth

The depth of the seafloor (bottom depth) at the station.

m Seawater actual
pressure_strain_gauge numeric Water Pressure

The measured pressure in decibars from the CTD’s strain gauge pressure sensor.

db Seawater actual
depth numeric Depth

Depth of the CTD in meters derived from pressure using salt water equations.

m Seawater actual
conductivity numeric Conductivity

Conductivity of seawater measured by the CTD, used to calculate salinity.

ms/cm Seawater actual
salinity_practical numeric Practical Salinity

Practical Salinity calculated from conductivity, temperature, and pressure.

psu Seawater actual
temperature numeric Water Temperature

Water temperature measured by the CTD and reported on the ITS-90 temperature scale.

deg c Seawater actual
potential_temperature numeric Potential Temperature

Temperature the water parcel would have if moved adiabatically to surface (0 dbar).

deg c Seawater actual
density numeric Density

In-situ density of seawater calculated from temperature, salinity, and pressure.

kg/m^3 Seawater actual
density_sigma_theta numeric Potential Density Anamoly

Potential density anomaly, i.e. the density of a seawater sample when it is moved to the sea surface with its pressure effects removed, calculated as density referenced to 0 dbar minus 1000 kg/m³.

kg/m^3 Seawater actual
specific_volume_anomaly numeric Specific Volume Anomaly

Difference between the specific volume of seawater and that of standard seawater.

10^-8 m^3/kg Seawater actual
oxygen_ml_l_1 numeric Oxygen (Volume)

Dissolved oxygen concentration measured by the SBE43 sensor.

ml/l Seawater actual
oxygen_umol_kg_1 numeric Oxygen (Mass-based)

Dissolved oxygen concentration measured by the SBE43 sensor.

umol/kg Seawater actual
oxygen_percent_sat numeric Oxygen (Saturation)

Percent of oxygen saturation relative to equilibrium with the atmosphere.

% saturation Seawater actual
fluorescence_cdom numeric CDOM Flourescence

Colored Dissolved Organic Matter fluorescence signal (CDOM concentration proxy).

mg/m^3 Seawater actual
fluorescence_chlorophyll numeric Chlorophyll-a Flourescence

Chlorophyll-a fluorescence from a WET Labs ECO fluorometer.

mg/m^3 Seawater actual
fluorescence_chlorophyll_2 numeric Chlorophyll-a Flourescence

Chlorophyll-a fluorescence from a WET Labs ECO fluorometer.

mg/m^3 Seawater actual
par numeric Photosynthetically Active Radiation (Water)

Photosynthetically Active Radiation

umol photons/m^2/sec Seawater actual
spar numeric Photosynthetically Active Radiation (Air)

Surface Photosynthetically Active Radiation, measured by a PAR sensor on top deck of the research vessel.

umol photons/m^2/sec Seawater actual
cpar numeric Corrected PAR

Percentage of surface PAR reaching depth.

% Seawater actual
notes text

Any additional notes about this variable

Additional Information
Field label
Study/Dataset Example
Format
CSV
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https://canwin-datahub.ad.umanitoba.ca
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Original url
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Package id
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Resource id
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Size
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State
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Task created
2026-07-24 18:48:44.486537
Url type
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