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Blog Home » Q&A: Identifying Data Types

Q&A: Identifying Data Types

unlabled data from a HydroCAT-EP multiparameter probe

The data above came from a HydroCAT-EP multiparameter CTD in a shallow embayment from April – November. Can you correctly label the 4 plots shown above? The HydroCAT-EP measures the following parameters:

  • Temperature
  • Conductivity
  • Pressure
  • Dissolved oxygen
  • pH
  • Chlorophyll
  • Turbidity

Hint: this area is subject to periods of eutrophication during the late summer/early fall.

Find the Answer

Time series of temperature, chlorophyll, dissolved oxygen, and pH in a shallow embayment

From top to bottom, the plots contain:

  • Temperature (°C)
  • Chlorophyll (µg/L)
  • Dissolved Oxygen (mg/L)
  • pH

Chlorophyll and dissolved oxygen are monitored closely at this site, as nitrate loading from a nearby harbor contributes to low dissolved oxygen conditions. Multiparameter instruments like the HydroCAT-EP help to catch these events and tie each parameter into a broader context.

April 29, 2021

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