OMPS-NPP: Global Ozone and Aerosol Measurements from Suomi-NPP

OMPS-NPP L2 NM data provides total ozone column amounts derived from normalized radiances using two wavelength pairs, 317.5/331.2 nm and 331.2/360 nm. Each daily granule contains data from about 14.5 orbits, with a 2800 km swath width divided into 36 scenes of 50 km x 50 km at nadir. The product also includes measurements of UV aerosol index and reflectivity at 331 nm.

Use Cases

• Monitoring stratospheric ozone depletion and recovery based on total column ozone measurements.
• Tracking global aerosol plumes (e.g., from wildfires or volcanoes) using the UV aerosol index.
• Analyzing surface reflectivity in the UV spectrum for albedo studies from the 331 nm reflectivity data.
• Studying diurnal and seasonal variations in atmospheric composition using the swath-based orbital time series.

Strengths

• Provides global spatial coverage from -90 to 90 degrees latitude.
• Offers high-resolution spatial data with a nadir footprint of 50 km x 50 km across a 2800 km swath.
• Contains multiple derived atmospheric parameters: total ozone, UV aerosol index, and reflectivity.

Limitations

• Metadata completeness is low; specific column names, row counts, and file sizes are not provided by any source.
• Data is restricted to daylight portions of orbits, limiting coverage in polar night regions.
• The license is ambiguously listed as 'other-license-specified' without clear terms.

Provenance

Source

GES_DISC (Goddard Earth Sciences Data and Information Services Center)

Collection Method

Measurements from the Ozone Mapping and Profiling Suite (OMPS) Nadir-Mapper instrument on the Suomi-NPP satellite.

Time Range

Daily orbital data, with each granule covering a full day.

Freshness

2026-04-09 23:27:10.135565

Geography

Global