Salish Sea and California Current Multi-Stressor Ocean Chemistry Data 2008-2024

SalishCruiseMultistressor_v2025 is an updated NOAA data product containing 6,527 complete records of calculated inorganic carbon parameters for marine heatwave, hypoxia, and ocean acidification research. It includes derived parameters like pH, pCO2, and aragonite saturation states, calculated from DIC, TA, and CTD measurements using the R seacarb package. The dataset covers the southern Salish Sea and northern California Current System from February 2008 to October 2024.

Use Cases

• Analyze trends in pCO2insitu and fCO2insitu alongside CTDTMP_DEG_C_ITS90 to study ocean acidification drivers in the California Current.
• Model aragonite and calcite saturation states (OmegaAragonite, OmegaCalcite) using DIC_UMOL_KG, TA_UMOL_KG, and nutrient measurements to assess impacts on marine calcifiers.
• Compare calculated carbonate system parameters using the Lueker et al. (2000) and Waters et al. (2014) dissociation constants for different salinity regimes.
• Investigate correlations between dissolved oxygen (O2), temperature (CTDTMP_DEG_C_ITS90), and derived pH to research combined hypoxia and acidification stress.

Strengths

• Contains 6,527 complete, quality-flagged records of key carbonate system measurements.
• Provides calculated parameters using two different sets of dissociation constants (Lueker et al. 2000 and Waters et al. 2014) for methodological comparison.
• Covers a 16-year time series from 2008 to 2024 for long-term trend analysis in a critical coastal region.

Limitations

• Sample size of 6,527 records may be limited for highly granular spatial or temporal modeling within the 16-year period.
• Data is derived from bottle samples and CTD casts during specific research cruises, not continuous monitoring, creating temporal gaps.
• Complex derivation of parameters relies on specific software (R seacarb) and chosen constants, requiring user expertise for interpretation.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce (NCEI Accession 0307626).

Collection Method

Parameters calculated using the R seacarb function carb from laboratory-analyzed bottle samples (DIC, TA, nutrients) and CTD measurements (T, S, pressure).

Time Range

2008-02-04 to 2024-10-22

Freshness

Data current through October 2024, with metadata last updated in March 2026.

Geography

Southern Salish Sea and northern California Current System.