OMUVBG: Daily Global Gridded UVB Irradiance and Erythemal Dose

0.25-degree gridded daily data provides global surface UVB irradiance and erythemal dose measurements from the Aura-OMI satellite. The Level-2G product bins, but does not average, swath pixel data into global grids, preserving all ancillary parameters like latitude, longitude, time, and solar angles for each observed scene. Scientists can apply custom filtering and averaging schemes to these binned 'candidate' pixels to create derived Level-3 products.

Use Cases

• Calculating daily erythemal dose for skin cancer risk studies based on spectral surface UVB irradiance.
• Generating custom Level-3 climate data products by applying quality filters to the binned pixel 'candidates'.
• Analyzing spatial patterns of ultraviolet radiation using the 0.25x0.25 degree global geospatial grid.
• Studying solar and viewing angle effects on UV measurements using saved ancillary parameters.

Strengths

• Provides a high spatial resolution of 0.25x0.25 degrees for global UV analysis.
• Preserves raw pixel-level data as 'candidates' within each grid, enabling flexible, user-defined processing.
• Contains multiple ancillary geolocation and observational parameters like solar angles for each pixel.

Limitations

• Key metadata such as row count, column names, and exact file size are unspecified across all sources.
• License information is inconsistently reported as 'other-license-specified' on one platform and null on another.
• Data is limited to the sunlit portion of the globe each day, leaving polar night regions unobserved.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Satellite observations from the Aura-OMI instrument, processed into Level-2G gridded product.

Freshness

2026-04-09 23:27:52.524504

Geography

Global