ECCO V4r4: Global Atmosphere Surface Variables Monthly Mean 0.5 Degree Grid, 1992-2017

Global monthly-averaged atmosphere surface temperature, humidity, wind, and pressure interpolated to a 0.5-degree grid. The data is a dynamically consistent reconstruction from the ECCO Version 4 Release 4 ocean and sea-ice state estimate produced by NASA. It covers the period from 1992-01-01 to 2018-01-01.

Use Cases

• Analyzing long-term trends in surface temperature and humidity based on the monthly-averaged atmospheric variables.
• Modeling wind and pressure patterns for climate studies based on the gridded surface wind data.
• Validating other reanalysis products or climate models against the ECCO state estimate's surface atmospheric reconstruction.
• Studying ocean-atmosphere coupling dynamics using the consistent ocean and atmospheric state estimates.

Strengths

• Data spans a 26-year period from 1992 to 2018, providing a long-term climate record.
• Integrates multiple observational constraints including satellite altimetry, radiometry, gravimetry, and in-situ measurements.
• Provides a dynamically and kinematically consistent reconstruction of ocean, sea-ice, and surface atmospheric states.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data freshness should be verified; the last metadata update is listed as 2026-03 13.

Provenance

Source

National Aeronautics and Space Administration (NASA).

Collection Method

Free-running solution of the MITgcm, fit to observations in a least-squares sense using satellite and in-situ data.

Time Range

1992-01-01T12:00:00 to 2018-01-01T00:00:00.

Freshness

Last metadata update listed as 2026-03-13 02:58:11.012527; data coverage ends in 2018.

Geography

Global coverage on a 0.5-degree grid.