VJ202GDC_NRT: VIIRS/JPSS2 Near Real Time Calibrated Radiance Swath Data

Near Real Time data from the VIIRS sensor aboard the JPSS-2/NOAA-21 satellite provides calibrated top-of-atmosphere radiances for 7 dual-gain moderate-resolution bands (M1–M5, M7, M13) at 750-meter resolution. The product contains unaggregated sub-pixel samples from nadir and near-nadir zones that are typically discarded during standard processing, offering a unique view of the raw sensor data. Each swath file is generated from 6 minutes of satellite overpass data, with dual-gain bands containing 6304 samples per scan.

Use Cases

• Sensor calibration validation and algorithm refinement based on unaggregated dual-gain band radiances.
• High-resolution atmospheric and surface studies using calibrated top-of-atmosphere radiance from specific spectral bands.
• Radiative transfer modeling and retrieval development leveraging the detailed 6304-sample per scan data structure.
• Near Real Time environmental monitoring (e.g., fires, aerosols) utilizing the 6-minute swath processing window.

Strengths

• Provides unique, typically discarded unaggregated sub-pixel radiance data for 7 specific dual-gain bands.
• Offers Near Real Time availability, with a documented last update date of 2026-04 09.
• Contains high sample density, with dual-gain bands having 6304 samples per scan compared to 3200 for other bands.
• Cross-platform presence on NASA Earthdata and Data.gov signals its importance and operational use.

Limitations

• Column names and detailed schema are unknown across all sources, hindering precise data understanding.
• Dataset size and row counts are not provided, making it difficult to assess data volume.
• License is ambiguously listed as 'other-license-specified' or 'None', requiring further investigation for use.

Provenance

Source

LANCEMODIS (NASA)

Collection Method

Satellite remote sensing from the VIIRS sensor on the JPSS-2/NOAA-21 satellite.

Time Range

Near Real Time (ongoing)

Freshness

2026-04-09 21:00:41.957460

Geography

Global swath coverage from satellite overpass.