GEOS-5 Atmospheric Profiles Co-located with OMI/Aura Satellite Swath

OMUFPITMET provides selected GEOS-5 Forward Processing for Instrument Teams assimilated parameters co-located with the OMI/Aura UV-2 satellite swath. The product includes surface pressure, vertical temperature profiles, wind profiles, and tropopause pressure, with vertical layers reduced from 72 to 47 to manage file size. It was generated by the Global Modeling and Assimilation Office for use by the OMI team and related research.

Use Cases

• Assimilating surface pressure and vertical temperature profiles from GEOS-5 FP-IT to improve OMI UV-2 Level 2 retrieval algorithms.
• Analyzing correlations between model-derived surface wind profiles and satellite-observed atmospheric composition.
• Studying tropopause pressure and boundary layer top pressure dynamics using co-located model and observation data.
• Validating GEOS-5 FP-IT assimilation outputs against satellite swath geometries by leveraging the precise spatiotemporal co-location.

Strengths

• Data is precisely co-located in space and time with the OMI UV-2 satellite swath observations.
• Vertical dimension was reduced from 72 layers to 47 layers to create more manageable file sizes, with each file approximately 45MB.

Limitations

• The spatial resolution of the original GEOS-5 FP-IT data (0.625° lon x 0.5° lat) differs from the OMI UV-2 swath resolution (13km x 24km at nadir), requiring interpolation.
• Specific temporal coverage, total row count, and update frequency are not provided in the description.

Provenance

Source

Global Modeling and Assimilation Office (GMAO) at NASA, distributed via GES DISC.

Collection Method

Parameters from the GEOS-5 FP-IT assimilated product were selected and geo-colocated to the OMI/Aura UV-2 1-Orbit L2 support swath.

Time Range

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Freshness

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Geography

Global coverage corresponding to the OMI/Aura satellite swath.