Q&A: Identifying Data Types
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
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.
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