1931 to 1955 data contains water salinity, temperature, and sigma t (density) measurements binned at 10-meter depth intervals from 0 to 300 meters. The dataset includes over 500,000 temperature-salinity profiles for the Northwest Atlantic, sourced from the Canadian Fisheries and Oceans Hydrographic database. NOAA's National Centers for Environmental Information (NCEI) provides this historical collection.
Use Cases
- Analyzing temporal trends in water salinity and temperature at specific 10-meter depth bins over a 24-year period.
- Modeling ocean density (sigma t) as a function of measured salinity and temperature profiles.
- Calibrating regional ocean circulation models using historical hydrographic bottle and CTD cast data from the Gulf of Maine.
- Investigating vertical stratification changes by comparing data across the 0 to 300 meter depth range.
Strengths
- Over 500,000 temperature-salinity profiles provide a substantial historical record.
- Data spans a 24-year period (1931-1955) for longitudinal analysis.
- Measurements are binned at consistent 10-meter depth intervals from 0 to 300 meters.
Limitations
- Data is temporally stale, with the last update recorded in 1955.
- The specific row count and column schema for this Gulf of Maine subset are unknown.
- Data originates from multiple instrument types (bottles, CTDs, bathythermographs), which may introduce measurement inconsistencies.
Provenance
- Source
- Canadian Fisheries and Oceans Hydrographic database, via NOAA NCEI.
- Collection Method
- Acquired from hydrographic bottles, CTD casts, bathythermographs, and Batfish tows.
- Time Range
- 1931 to 1955.
- Freshness
- null
- Geography
- Gulf of Maine, within the Northwest Atlantic (35°-80° N, 42°-100° W).