TOMSN7L3dery: Daily Global UV-B Erythemal Irradiance Grid

Global 1.00 x 1.25 degree latitude/longitude grid provides daily UV-B erythemal local noon irradiance values. The data originates from the Nimbus-7 Total Ozone Mapping Spectrometer (TOMS) version 8, produced by NASA Goddard Space Flight Center's Laboratory for Atmospheres. It is stored in ASCII format and mapped to a consistent 180 x 288 cell global grid.

Use Cases

• Tracking long-term changes in surface UV radiation based on daily gridded irradiance values.
• Assessing regional UV exposure risks using the global geospatial coverage.
• Validating atmospheric models with satellite-derived erythemal irradiance data.
• Studying the relationship between ozone levels and UV-B radiation across the globe.

Strengths

• Provides a consistent global grid of 51,840 cells (180 x 288) for spatial analysis.
• Data is produced by NASA Goddard Space Flight Center's Laboratory for Atmospheres, a recognized authority.
• Available on multiple platforms (Data.gov, NASA Earthdata), indicating established use and importance.

Limitations

• Metadata conflicts on last updated date (1993 on NASA Earthdata vs. 2026 on Data.gov).
• Column names and specific data structure within ASCII files are not documented.
• The temporal coverage of the dataset is not explicitly stated in the provided descriptions.

Provenance

Source

Laboratory for Atmospheres at NASA Goddard Space Flight Center (Code 614)

Collection Method

Satellite observation from the Nimbus-7 Total Ozone Mapping Spectrometer (TOMS).

Freshness

2026-04-09 21:43:35.871115

Geography

Global