NASA Aura Project: GEOS-5 Assimilated Meteorological Data Co-Located with OMI Swaths

The NASA Aura Project provides assimilated meteorological data from the GEOS-5 FP-IT model co-located with satellite observations from the Ozone Monitoring Instrument (OMI). The data includes fields such as layer pressure thickness, surface pressure, vertical temperature profiles, and wind profiles, geo-collected to the OMI UV-2 and VIS swaths at a 13km x 24km resolution. The product lead is Zachary Fasnacht of SSAI, with Joanna Joiner as the responsible NASA official, and the data is available under a CC-BY-4.0 license.

Use Cases

• Validating atmospheric chemistry models based on co-located ozone and meteorological profiles.
• Analyzing correlations between aerosol concentrations and meteorological conditions like temperature and pressure.
• Developing data assimilation techniques for satellite instruments using the provided model-layer assimilated data.
• Studying atmospheric dynamics and vertical structure using the provided temperature and wind profiles.

Strengths

• Data is co-located in space and time with high-resolution OMI satellite swaths (13km x 24km at nadir).
• Files are in netCDF4 format, which is compatible with most standard scientific data tools.
• Each data file is approximately 45MB in size, providing a consistent and manageable unit for analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and total dataset size are unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Global Modeling and Assimilation Office (GMAO) at NASA.

Collection Method

Selected fields from the GEOS-5 Forward Processing for Instrument Teams (FP-IT) assimilated product, geo-colocated to OMI/Aura satellite swaths.

Time Range

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Freshness

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Geography

Global, based on OMI satellite coverage.