Columbia River Estuary Oceanographic Data from Astoria-Megler Bridge, 1998-2010

NCEI Accession 0161716 contains navigational and physical oceanographic data collected at the Astoria-Megler Bridge South Channel fixed station in the Columbia River estuary. The Center for Coastal Margin Observation & Prediction collected the data, which includes measurements of conductivity, salinity, water temperature, depth, and hydrostatic pressure at frequent intervals from March 1998 to September 2010. NANOOS assembled and submitted the data to NOAA NCEI as part of the Integrated Ocean Observing System Data Assembly Centers Data Stewardship Program.

Use Cases

• Modeling estuarine circulation and salinity intrusion based on conductivity and salinity time series.
• Analyzing seasonal and interannual water temperature variability in a coastal river estuary.
• Studying the relationship between hydrostatic pressure and water depth observations for tidal analysis.
• Calibrating regional oceanographic models using long-term, high-frequency in-situ sensor data.

Strengths

• Data spans over 12 years, from March 1998 to September 2010, providing a long-term record.
• Measurements were taken at frequent intervals, suitable for high-temporal-resolution analysis.
• Data follows the Climate and Forecast (CF) metadata convention and Attribute Convention for Data Discovery (ACDD), enhancing interoperability.

Limitations

• Last updated 2010-09-22 00:00:00; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and exact file size are unknown, which may limit suitability assessment.

Provenance

Source

Center for Coastal Margin Observation and Prediction (CMOP), assembled by Northwest Association of Networked Ocean Observation Systems (NANOOS).

Collection Method

Data collected by sensors at a fixed station (ODOT pier 169) in the Columbia River estuary.

Time Range

1998-03-01 to 2010-09-22

Freshness

Data collection ended in 2010; the dataset is historical.

Geography

Astoria-Megler Bridge South Channel, Columbia River estuary - Washington/Oregon, North East Pacific Ocean.