Nine depth stations from 4 to 80 meters captured partial pressure of CO2, temperature, salinity, and dissolved oxygen off the Washington coast. The dataset contains mean values from the last minute of sampling at each depth, collected by a NOAA NCEI profiling crawler (PRAWLER) during a deployment from July to September 2017. Measurements were taken at a fixed location (47.9633°N, 124.9633°W) using a prototype pCO2 optode with tested soak periods.
Use Cases
- Analyze the relationship between pCO2 and water temperature or salinity across nine depth layers.
- Validate the performance of the Aanderaa pCO2 optode (model #4797) against known uncertainties of 35-72 uatm.
- Compare the effects of 2, 4, and 10-minute sensor soak times on subsequent 8-minute sampling intervals.
- Model vertical carbon distribution using depth-stationed profiles from 3 to 80 meters.
- Assess temporal changes in dissolved oxygen and pCO2 over the two-month deployment period.
Strengths
- Data spans a two-month continuous deployment from 2017-07-12 to 2017-09-17.
- Profiles include nine defined depth stations from 4m to 80m, providing vertical resolution.
- pCO2 measurements were adjusted using a published validation procedure (Chu et al. 2020).
Limitations
- Sample size is limited to a single geographic location and one deployment season.
- Actual sampling depths could vary by 1-4 meters from target stations due to swell height.
- The dataset consists of aggregated mean values from the last seven measurements per depth, not the full raw time series.
Provenance
- Source
- NOAA National Centers for Environmental Information (NCEI Accession 0223133).
- Collection Method
- Data collected by a profiling crawler (PRAWLER) deployed in fixed-depth mode, sampling at 8-second intervals for 8 minutes after variable soak periods.
- Time Range
- 2017-07-12 to 2017-09-17.
- Freshness
- null
- Geography
- Washington coastal area, North Pacific Ocean at 47.9633°N, 124.9633°W.