Sea-Bird Scientific | News

Q&A: Identifying Data Types

Written by Sea-Bird Scientific | Apr 28, 2021 4:00:00 AM

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.

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.