OMUFPITMET: GEOS-5 Atmospheric Profiles Co-located with OMI/Aura Satellite Swaths

The OMUFPITMET dataset provides selected GEOS-5 Forward Processing for Instrument Teams (FP-IT) assimilated atmospheric parameters, including surface pressure, temperature profiles, wind profiles, and tropopause pressure, co-located in space and time with the OMI/Aura UV-2 satellite swath. The product is generated by the Global Modeling and Assimilation Office (GMAO) for use by the OMI team in their L2 algorithms and for related research. Each orbital file is approximately 45MB in size and is stored in netCDF4 format.

Use Cases

• Validating satellite-derived atmospheric composition products based on co-located model temperature and pressure profiles.
• Analyzing troposphere-stratosphere exchange processes based on tropopause and boundary layer top pressure data.
• Improving wind-driven atmospheric transport models based on the surface and vertical wind profiles.
• Assessing model representation of the planetary boundary layer based on the provided pressure and geopotential fields.

Strengths

• Data is spatially and temporally co-located with the OMI/Aura UV-2 swath for direct comparison.
• Vertical dimension is reduced from 72 to 47 layers to manage file size, which is approximately 45MB per orbital file.
• Uses netCDF4 format, which is compatible with most HDF5 readers and analysis tools.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The original GEOS-5 FP-IT data grid (0.625°x0.5°) is interpolated to the OMI UV-2 resolution (13km x 24km at nadir), which may introduce representation errors.

Provenance

Source

Global Modeling and Assimilation Office (GMAO) at NASA, with product lead Zachary Fasnacht of SSAI.

Collection Method

Parameters from the GEOS-5 FP-IT assimilated product are co-located with the OMI/Aura UV-2 swath.

Time Range

Temporal coverage aligns with OMI/Aura orbital swaths; specific range is not provided.

Freshness

Last updated 2026-03-13 02:31:11.158356; freshness should be verified.

Geography

Global coverage corresponding to the OMI/Aura satellite orbit.