VNP46A1 - VIIRS/NPP Daily Gridded Day Night Band 500m Linear Lat Lon Grid Night
The Suomi National Polar-orbiting Partnership (SNPP) Visible Infrared Imaging Radiometer Suite (VIIRS) supports a Day-Night Band (DNB) sensor that provides global daily measurements of nocturnal visible and near-infrared (NIR) light that are suitable for Earth system science and applications. The VIIRS DNB’s ultra-sensitivity in lowlight conditions enable us to generate a new set of science-quality nighttime products that manifest substantial improvements in sensor resolution and calibration when compared to the previous era of Defense Meteorological Satellite Program/Operational Linescan System’s (DMSP/OLS) nighttime lights image products. Such improvements allow the VIIRS DNB products to better monitor both the magnitude and signature of nighttime phenomena, and anthropogenic sources of light emissions.
The first of two VIIRS DNB-based datasets is a daily, top-of-atmosphere, at-sensor nighttime radiance product called VIIRS/NPP Daily Gridded Day Night Band 15 arc-second Linear Lat Lon Grid Night. Known by its short-name, VNP46A1, this product contains 26 Science Data Sets (SDS) that include sensor radiance, zenith and azimuth angles (at-sensor, solar, and lunar), cloud-mask flags, time, shortwave IR radiance, brightness temperatures, VIIRS quality flags, moon phase angle, and moon illumination fraction. It also provides Quality Flag (QF) information specific to the cloud-mask, VIIRS moderate-resolution bands M10, M11, M12, M13, M15, M16, and DNB.
Links
- Search for Product Files
- Data Archive
- VIIRS Black Marble Nighttime Lights Product Suite Algorithm Theoretical Basis Document
- VIIRS Black Marble Product User Guide
- Northern India and Himalayas at night
- HDF to GeoTIFF on NASA's Marble Products
- VIIRS VNP46A1 File Specifications
- DOI: 10.5067/VIIRS/VNP46A1.001
| Shortname: | VNP46A1 |
| Platform: | Suomi-NPP |
| Instrument: | VIIRS |
| Processing Level: | Level-3 |
| File Size (MB): | ~ 40 |
| Data Format: | HDF5 |
| Spatial Resolution: | 15 arc-second |
| Temporal Resolution: | daily |
| Spatial Coverage: | Global |
| ArchiveSets: | 5000 |
| Collection: | NPP VIIRS collection 1.0 (ArchiveSet 5000) |
| Production Frequency: | 340 – 648 files per day |
| Dataset Originator/Creator: | VIIRS Land Science Investigator-led Processing System (Land SIPS) |
| PGE Number: | PGE554 |
| File Naming Convention: | VNP46A1.AYYYYDDD.hXXvYY.CCC.YYYYDDDHHMMSS.h5
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| Citation: | Please cite the use of this data set in a publication as follows: Román, M.O., Wang, Z., Sun, Q., Kalb, V., Miller, S.D., Molthan, A., Schultz, L., Bell, J., Stokes, E.C., Pandey, B. and Seto, K.C., et al. (2018). NASA's Black Marble nighttime lights product suite. Remote Sensing of Environment 210, 113-143. doi:10.1016/j.rse.2018.03.017. |
| Keywords: | SNPP VIIRS, DNB, Nighttime Lights, at-Sensor TOA Nighttime Radiance |