TOMSN7L3ztoz: Nimbus-7 Daily Ozone Zonal Means

Nimbus-7 Total Ozone Mapping Spectrometer (TOMS) version 8 data provides daily and monthly zonal means of total column ozone. The data are averaged in 5-degree latitude bands and were produced by the Laboratory for Atmospheres at NASA Goddard Space Flight Center. This dataset is stored in ASCII format and is available from the GES DISC.

Use Cases

• Tracking long-term ozone depletion trends based on daily and monthly zonal means.
• Analyzing latitudinal distribution of ozone based on 5-degree band averages.
• Validating atmospheric chemistry models with satellite-derived total column ozone data.
• Studying seasonal and interannual ozone variability from a time-series perspective.

Strengths

• Data originates from the NASA Goddard Space Flight Center Laboratory for Atmospheres, indicating authoritative provenance.
• Provides spatially aggregated data in consistent 5-degree latitude bands, facilitating zonal analysis.

Limitations

• Column names and exact row counts are not provided in the available metadata.
• Conflicting 'last updated' dates exist across platforms (1993-05-06 and 2026-04-09), creating uncertainty about metadata freshness.
• The dataset's temporal coverage (start and end dates) is not explicitly stated.

Provenance

Source

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

Collection Method

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

Freshness

2026-04-09 21:44:25.697939

Geography

Global, aggregated into 5-degree latitude bands.