VNP46A2: VIIRS Lunar Gap-Filled BRDF Nighttime Lights Daily L3 Global 500m [deprecated]

Caution: This dataset has been superseded by NASA/VIIRS/002/VNP46A2.

Dataset Availability

2012-01-19T00:00:00Z–2024-12-26T00:00:00Z

Dataset Provider

NASA LAADS DAAC

Earth Engine Snippet

ee.ImageCollection("NOAA/VIIRS/001/VNP46A2")

Cadence

1 Day

Tags

brdf

daily

nasa

nighttime

noaa

population

viirs

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:

• User's Guide

• Algorithm Theoretical Basis Document (ATBD)

• General Documentation

Bands

Pixel Size
500 meters

Bands

Name	Min	Max	Pixel Size	Description
DNB_BRDF_Corrected_NTL	0	6553.4	meters	BRDF corrected DNB NTL
Gap_Filled_DNB_BRDF_Corrected_NTL	0	6553.4	meters	Gap Filled BRDF corrected DNB NTL
DNB_Lunar_Irradiance	0	6553.4	meters	DNB Lunar Irradiance
Latest_High_Quality_Retrieval			meters	Latest high quality BRDF corrected DNB radiance retrieval
Mandatory_Quality_Flag	0	3	meters	Mandatory quality flag
Snow_Flag	0	1	meters	Flag for snow cover
QF_Cloud_Mask			meters	Quality flag for cloud mask
Bitmask for QF_Cloud_Mask Bit 0: Day/Night 0: Night 1: Day Bits 1-3: Land/Water Background 0: Land & Desert 1: Land no Desert 2: Inland Water 3: Sea Water 5: Coastal Bits 4-5: Cloud Mask Quality 0: Poor 1: Low 2: Medium 3: High Bits 6-7: Cloud Detection Results & Confidence Indicator 0: Confident Clear 1: Probably Clear 2: Probably Cloudy 3: Confident Cloudy Bit 8: Shadow Detected 0: No 1: Yes Bit 9: Cirrus Detection (IR) (BTM15 - BTM16) 0: No cloud 1: Cloud Bit 10: Snow/Ice Surface 0: No Snow/Ice 1: Snow/Ice

Mandatory_Quality_Flag Class Table

Value	Color	Description
0	None	High-quality, Persistent nighttime lights
1	None	High-quality, Ephemeral nighttime Lights
2	None	Poor-quality, Outlier, potential cloud contamination, or other issues
255	None	No retrieval, Fill value (masked out on ingestion)

Snow_Flag Class Table

Value	Color	Description
0	None	No Snow/Ice
1	None	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

Citations:

• Please visit LP DAAC 'Citing Our Data' page

DOIs

• https://doi.org/10.5067/VIIRS/VNP46A2.001

Explore with Earth Engine

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Code Editor (JavaScript)

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');

Open in Code Editor

VNP46A2: VIIRS Lunar Gap-Filled BRDF Nighttime Lights Daily L3 Global 500m [deprecated]

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 …

NOAA/VIIRS/001/VNP46A2, brdf,daily,nasa,nighttime,noaa,population,viirs

2012-01-19T00:00:00Z/2024-12-26T00:00:00Z

-90 -180 90 180

Google Earth Engine

https://developers.google.com/earth-engine/datasets

• https://doi.org/10.5067/VIIRS/VNP46A2.001
• https://doi.org/10.5067/VIIRS/VNP46A2.001