VIIRS/JPSS1 OBC NRT: Satellite Sensor Calibration Data

Near Real Time (NRT) data from the VIIRS sensor aboard the JPSS1 satellite, containing on-board calibrator observations for radiometric calibration. The dataset includes space view, solar diffuser, and blackbody view observations, along with associated gain state, HAM side information, and engineering data. It supports the transformation of VIIRS digital counts to radiance and reflectance for Level-1 and Level-2 swath products.

Use Cases

• Calibrating VIIRS imagery channels (I-bands and M-bands) using space view and solar diffuser observations.
• Monitoring sensor performance over time via engineering and housekeeping data.
• Validating radiometric algorithms using the documented formulae and error budgets.
• Supporting the generation of MODIS Level-1 intermediate products from VIIRS digital counts.

Strengths

• Provides detailed calibration data for 5 high-resolution imagery channels and 7 dual-gain bands.
• Includes unscaled data from the Solar Diffuser Stability Monitor (SDSM), supporting precise calibration.
• Documentation is referenced to a specific Operational Algorithm Description (OAD) document.

Limitations

• Column names and dataset size (rows, file size) are not provided on any platform.
• License is ambiguously listed as 'other-license-specified' on Data.gov, with no details on NASA Earthdata.
• The 'last updated' date of 2026-04 09 appears to be a future timestamp, indicating potential metadata error.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Generated from processing 6 minutes of VIIRS data acquired during a JPSS1 satellite overpass.

Time Range

Near Real Time (NRT) coverage, specific date range not provided.

Freshness

2026-04-09 20:47:08.999405 (Note: This is a future date, suggesting a metadata anomaly.)

Geography

Global swath coverage from the JPSS1 satellite orbit.