SASSIE ECCO: Arctic Ocean Bottom Pressure and Sea Surface Height Anomalies, 2014-2021

SASSIE ECCO V1R1 provides instantaneous ocean bottom pressure and sea surface height anomalies from a high-resolution 4D ocean circulation model. The dataset covers the Arctic region from 2014-01-15 to 2021-02-07, produced by downscaling a global state estimate to a 1/12-degree grid. NASA's POCLOUD organization generated this data to support the Salinity and Stratification at the Sea Ice Edge (SASSIE) field experiment.

Use Cases

• Analyzing ocean bottom pressure anomalies to study deep ocean currents and mass redistribution in the Arctic.
• Investigating sea surface height anomalies to understand steric effects and freshwater input from melting sea ice.
• Validating and improving general circulation models (GCMs) using dynamically consistent, observationally-informed state estimates.
• Studying the impact of salinity stratification on upper ocean dynamics, as referenced in the SASSIE experiment goals.

Strengths

• Data is derived from the ECCO 4D ocean circulation model, which combines observations with a general circulation model for consistency.
• Covers a specific time period from 2014-01-15T12:00:00 to 2021-02-07T12:00:00.
• Provides high-resolution data downscaled to a 1/12-degree grid for the Arctic domain.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Last updated 2021-02-08 00:00:00; freshness should be verified.
• Row count and file size are unknown, which may limit suitability assessment.

Provenance

Source

POCLOUD, as part of NASA's SASSIE field experiment and the ECCO (Estimating the Circulation and Climate of the Ocean) project.

Collection Method

Produced by downscaling the global ECCO state estimate from 1/3 to 1/12 degree grid cells, using the global solution for initial/boundary conditions and atmospheric forcing.

Time Range

2014-01-15T12:00:00 to 2021-02-07T12:00:00

Freshness

Last updated 2021-02-08 00:00:00.

Geography

Arctic polar region, consolidated onto a single curvilinear grid face using the llc1080 native grid.