VJ202MOD_NRT: VIIRS/JPSS2 Near-Real-Time Calibrated Radiance Swaths

NASA's VIIRS instrument on the JPSS-2/NOAA-21 satellite provides near-real-time Level 1B data with a spatial resolution of 750 meters at nadir. Each 6-minute granule contains calibrated radiance and reflectance for sixteen spectral bands, ranging from visible to longwave infrared wavelengths, across a swath measuring 3232 lines by 3200 pixels. The product includes geolocation, quality flags, and metadata for eleven reflective solar bands and five thermal emissive bands.

Use Cases

• Monitoring active wildfires and thermal anomalies based on thermal emissive band (TEB) radiances.
• Analyzing aerosol optical depth and cloud properties using reflective solar band (RSB) reflectance data.
• Mapping sea surface temperature and ice cover using calibrated radiances from mediumwave- and longwave-infrared bands.
• Assessing vegetation health and land cover change with data from visible and near-infrared wavelengths.

Strengths

• Provides near-real-time (NRT) data with a consistent 6-minute temporal duration per granule.
• Offers calibrated radiances across a wide spectral range from 0.402 µm to 12.49 µm.
• Delivers data at a defined spatial resolution of 750 meters with a swath dimension of 3232 lines by 3200 pixels.

Limitations

• Column names and detailed data structure are not provided in the available metadata.
• The dataset's size, row count, and specific license terms are not explicitly stated across all sources.
• Relies on user-provided documentation for complete technical understanding.

Provenance

Source

NASA VIIRS instrument on the Joint Polar-orbiting Satellite System-2 (JPSS-2/NOAA-21) platform, processed by LANCEMODIS.

Collection Method

Derived from VIIRS Level 1A raw radiances through radiometric calibration and geolocation processing.

Time Range

Near-real-time coverage; specific start date not provided.

Freshness

Last updated on 2026-04 09 21:01:09.430636 according to two platforms.

Geography

Global swath coverage from a polar-orbiting satellite.