TOMSN7L3dtoz: Daily Global Ozone Measurements from Nimbus-7 Satellite

NASA's Nimbus-7 Total Ozone Mapping Spectrometer (TOMS) Version 8 data product provides daily global measurements of total column ozone. The data are mapped to a 180 x 288 cell grid with a 1.00 x 1.25 degree latitude-longitude resolution and stored in ASCII format. This dataset was produced by the Laboratory for Atmospheres at NASA Goddard Space Flight Center.

Use Cases

• Tracking daily global ozone distribution based on satellite remote sensing data.
• Analyzing long-term trends in atmospheric ozone concentration from the gridded time series.
• Validating atmospheric chemistry models using the 1.00 x 1.25 degree gridded measurements.
• Studying spatial patterns of ozone depletion over specific geographic regions.

Strengths

• Provides a consistent, daily global grid of 51,840 cells (180 x 288) for spatial analysis.
• Produced by NASA's authoritative Laboratory for Atmospheres at Goddard Space Flight Center.
• Available on multiple major data platforms, indicating established use and importance.

Limitations

• Column names and detailed data structure are not provided in the available metadata.
• Conflicting 'last updated' dates (1993 and 2026) create uncertainty about data currency or metadata maintenance.
• Data is stored in ASCII format, which may require specialized parsing compared to modern binary or netCDF formats.

Provenance

Source

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

Collection Method

Satellite remote sensing via the Nimbus-7 Total Ozone Mapping Spectrometer (TOMS).

Time Range

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Freshness

2026-04-09 21:31:36.768349

Geography

Global, mapped to a 1.00 x 1.25 degree latitude-longitude grid.