ECCO V4r4: Daily Sea-Ice and Snow Volume Fluxes, 1992-2017

Daily-averaged sea-ice and snow horizontal volume fluxes on the LLC90 grid from the ECCO Version 4 Release 4 ocean and sea-ice state estimate. The ECCO V4r4 reconstruction is a free-running solution of the MITgcm fit to observations from satellite altimeters, radiometers, gravimeters, and in-situ programs. It covers the period from 1992-01-01 to 2018-01-01.

Use Cases

• Modeling sea-ice transport and mass balance based on daily horizontal volume fluxes.
• Validating climate model outputs against a dynamically consistent ocean and sea-ice reconstruction.
• Analyzing long-term trends in polar cryosphere components over the 26-year period.
• Studying ocean-sea-ice-atmosphere interactions using the assimilated observational constraints.

Strengths

• Covers a 26-year period from 1992 to 2018, providing a long-term climate record.
• Assimilates multiple observational constraints including satellite altimetry, sea surface temperature, and in-situ profiles.
• Provides data on the native high-resolution LLC90 model grid for precise spatial analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect temporal bias inherent to the availability of satellite observations during the 1992-2017 period.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Dynamically and kinematically-consistent reconstruction (state estimate) from the MITgcm, fit to observations in a least-squares sense.

Time Range

1992-01-01 to 2018-01-01

Freshness

Last updated 2026-03-13 03:03:14.716808; freshness should be verified.

Geography

Global