- Dataset Availability
- 2012-01-19T00:00:00Z–2023-02-05T00:00:00
- Dataset Provider
- NASA LP DAAC at the USGS EROS Center
- Earth Engine Snippet
-
ee.ImageCollection("NOAA/VIIRS/001/VNP46A2")Sign up for Earth Engine
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- Tags
Description
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 enables 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.
VNP46A2 dataset is a daily moonlight- and atmosphere-corrected Nighttime Lights (NTL) product using the Bidirectional Reflectance Distribution Function (BRDF).
Documentation:
Bands
Resolution
500 meters
Bands
| Name | Min | Max | Description | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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DNB_BRDF_Corrected_NTL |
0 | 6553.4 | BRDF corrected DNB NTL |
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Gap_Filled_DNB_BRDFCorrected_NTL |
0 | 6553.4 | Gap Filled BRDF corrected DNB NTL |
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DNB_Lunar_Irradiance |
0 | 6553.4 | DNB Lunar Irradiance |
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Latest_High_Quality_Retrieval |
Latest high quality BRDF corrected DNB radiance retrieval |
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Mandatory_Quality_Flag |
0 | 3 | Mandatory quality flag |
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Snow_Flag |
0 | 1 | Flag for snow cover |
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QF_Cloud_Mask |
Quality flag for cloud mask |
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Mandatory_Quality_Flag Class Table
| Value | Color | Description |
|---|---|---|
| 0 | High-quality, Persistent nighttime lights | |
| 1 | High-quality, Ephemeral nighttime Lights | |
| 2 | Poor-quality, Outlier, potential cloud contamination, or other issues | |
| 255 | No retrieval, Fill value (masked out on ingestion) |
Snow_Flag Class Table
| Value | Color | Description |
|---|---|---|
| 0 | No Snow/Ice | |
| 1 | Snow/Ice |
Terms of Use
Terms of Use
LP DAAC NASA data are freely accessible; however, when an author publishes these data or works based on the data, it is requested that the author cite the datasets within the text of the publication and include a reference to them in the reference list.
Citations
Please visit LP DAAC 'Citing Our Data' page
DOIs
Explore in Earth Engine
var dataset = ee.ImageCollection('NOAA/VIIRS/001/VNP46A2').filter(
ee.Filter.date('2013-01-01', '2013-07-01'));
// Bidirectional Reflectance Distribution Function (BRDF)
var brdf = dataset.select('DNB_BRDF_Corrected_NTL');
var brdfVis = {
min: 0,
max: 100,
palette: ['black', 'purple', 'cyan', 'green', 'yellow', 'red', 'white'],
};
Map.setCenter(-79.4, 43.1, 8);
// Day/Night Band (DNB)
// NightTime Light (NTL)
Map.addLayer(brdf, brdfVis, 'DNB_BRDF_Corrected_NTL');