VJ102IMG - VIIRS/JPSS1 Imagery Resolution 6-Min L1B Swath 375m
VJ102IMG represents the short-name for the Joint Polar-orbiting Satellite System-1 (JPSS-1/NOAA20; referred to hereafter as J1) platform-derived NASA VIIRS L1B calibrated radiances product that comprise five image-resolution or I-bands, which have a 375-meter resolution at nadir. These I-bands comprise three reflective solar bands (RSB) and two thermal emissive bands (TEB). Each of the I-bands has 32 detectors in the along-track direction with 32 rows of pixels per scan that offer a resolution that is twice finer than that of the moderate (M) and Day-Night bands (DNB). Ranging in wavelengths from 0.6 µm to 12.4 µm, the I-bands are sensitive to visible/reflective, near-, shortwave-, mediumwave-, and longwave-infrared wavelengths. Derived from the NASA VIIRS L1A raw radiances, this product includes calibrated and geolocated radiance and reflectance data, quality flags, and granule- and collection-level metadata. In contrast to a MODIS L1B product, which temporally spans 5 minutes, the VIIRS L1B calibrated radiances product contains a nominal temporal duration of 6 minutes. The image dimensions of the 375-m swath product measure 6464 lines by 6400 pixels.
The variables in the observation data in the J1-derived VIIRS L1B calibration product are almost similar to those from the SNPP-VIIRS L1B (collection-1) except for one major change: The J1 VIIRS L1B calibration product’s quality flags include a detector quality flag with associated masks, their values and meanings for all the bands (I, M, and DNB).
| Shortname: | VJ102IMG |
| Platform: | JPSS-1 |
| Instrument: | VIIRS |
| Processing Level: | Level-1B |
| Data Format: | netCDF4/HDF5 |
| Spatial Resolution: | 375 m |
| Temporal Resolution: | 6 minute |
| ArchiveSets: | 5201, 5200 |
| Collection: | NPP and JPSS1 VIIRS data 2.1 (ArchiveSet 5201) |
| PGE Number: | PGE502 |
| File Naming Convention: | Syntax: ESDT.AYYYYDDD.HHMM.CCC.YYYYDDDHHMMSS.Format
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| Keywords: | JPSS-1 VIIRS, L1B, Image resolution, I-bands, Calibrated Radiances |