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).
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.
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 …
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["\u003cp\u003eVNP46A2 provides daily, moonlight- and atmosphere-corrected nighttime lights data using the Bidirectional Reflectance Distribution Function (BRDF).\u003c/p\u003e\n"],["\u003cp\u003eThis dataset, derived from the Suomi NPP VIIRS Day-Night Band, offers improved resolution and calibration compared to previous nighttime lights products.\u003c/p\u003e\n"],["\u003cp\u003eIt includes quality flags for cloud cover and snow, along with a BRDF-corrected nighttime lights layer and a gap-filled version.\u003c/p\u003e\n"],["\u003cp\u003eThe data is freely accessible with attribution to NASA LP DAAC and is available from January 19, 2012, to December 1, 2024.\u003c/p\u003e\n"],["\u003cp\u003eEarth Engine provides tools for analyzing and visualizing this dataset for research, education, and non-profit use.\u003c/p\u003e\n"]]],["The VNP46A2 dataset from NASA LAADS DAAC, available from 2012-01-19 to 2024-12-26, offers daily, 500-meter resolution nighttime light data. It utilizes the VIIRS Day-Night Band (DNB) sensor to provide BRDF-corrected nighttime light measurements and includes quality flags, cloud masks, and snow/ice indicators. The data can be accessed through Google Earth Engine, using the `ee.ImageCollection(\"NOAA/VIIRS/001/VNP46A2\")` snippet, and it is free for research, education, and non-profit purposes. Users should cite the data in any publications.\n"],null,["# VNP46A2: VIIRS Lunar Gap-Filled BRDF Nighttime Lights Daily L3 Global 500m [deprecated]\n\n**Caution:** This dataset has been superseded by [NASA/VIIRS/002/VNP46A2](/earth-engine/datasets/catalog/NASA_VIIRS_002_VNP46A2). \n\nDataset Availability\n: 2012-01-19T00:00:00Z--2024-12-26T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA LAADS DAAC](https://doi.org/10.5067/VIIRS/VNP46A2.001)\n\nCadence\n: 1 Day\n\nTags\n:\n brdf \n daily \n nasa \n nighttime \n noaa \n population \nviirs \n\n#### Description\n\nThe Suomi National Polar-orbiting Partnership (SNPP) Visible Infrared\nImaging Radiometer Suite (VIIRS) supports a Day-Night Band (DNB) sensor\nthat provides global daily measurements of nocturnal visible and\nnear-infrared (NIR) light that are suitable for Earth system science and\napplications. The VIIRS DNB's ultra-sensitivity in lowlight conditions\nenables us to generate a new set of science-quality nighttime products that\nmanifest substantial improvements in sensor resolution and calibration when\ncompared to the previous era of Defense Meteorological Satellite\nProgram/Operational Linescan System's (DMSP/OLS) nighttime lights image\nproducts.\n\nVNP46A2 dataset is a daily moonlight- and atmosphere-corrected Nighttime\nLights (NTL) product using the Bidirectional Reflectance Distribution\nFunction (BRDF).\n\nDocumentation:\n\n- [User's Guide](https://ladsweb.modaps.eosdis.nasa.gov/api/v2/content/archives/Document%20Archive/Science%20Data%20Product%20Documentation/VIIRS_Black_Marble_UG_v1.3_Sep_2022.pdf)\n\n- [Algorithm Theoretical Basis Document (ATBD)](https://ladsweb.modaps.eosdis.nasa.gov/api/v2/content/archives/Document%20Archive/Science%20Data%20Product%20Documentation/Product%20Generation%20Algorithms/VIIRS_Black_Marble_ATBD_v1.1_July_2020.pdf)\n\n- [General Documentation](https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/VNP46A2/)\n\n### Bands\n\n\n**Pixel Size**\n\n500 meters\n\n**Bands**\n\n| Name | Min | Max | Pixel Size | Description |\n|-------------------------------------|-----|--------|------------|-----------------------------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `DNB_BRDF_Corrected_NTL` | 0 | 6553.4 | meters | BRDF corrected DNB NTL |\n| `Gap_Filled_DNB_BRDF_Corrected_NTL` | 0 | 6553.4 | meters | Gap Filled BRDF corrected DNB NTL |\n| `DNB_Lunar_Irradiance` | 0 | 6553.4 | meters | DNB Lunar Irradiance |\n| `Latest_High_Quality_Retrieval` | | | meters | Latest high quality BRDF corrected DNB radiance retrieval |\n| `Mandatory_Quality_Flag` | 0 | 3 | meters | Mandatory quality flag |\n| `Snow_Flag` | 0 | 1 | meters | Flag for snow cover |\n| `QF_Cloud_Mask` | | | meters | Quality flag for cloud mask |\n| 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 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n\n**Mandatory_Quality_Flag Class Table**\n\n| Value | Color | Description |\n|-------|-------|-----------------------------------------------------------------------|\n| 0 | None | High-quality, Persistent nighttime lights |\n| 1 | None | High-quality, Ephemeral nighttime Lights |\n| 2 | None | Poor-quality, Outlier, potential cloud contamination, or other issues |\n| 255 | None | No retrieval, Fill value (masked out on ingestion) |\n\n**Snow_Flag Class Table**\n\n| Value | Color | Description |\n|-------|-------|-------------|\n| 0 | None | No Snow/Ice |\n| 1 | None | Snow/Ice |\n\n### Terms of Use\n\n**Terms of Use**\n\nLP DAAC NASA data are freely accessible; however, when an author\npublishes these data or works based on the data, it is requested that the\nauthor cite the datasets within the text of the publication and include a\nreference to them in the reference list.\n\n### Citations\n\nCitations:\n\n- Please visit [LP DAAC 'Citing Our Data' page](https://lpdaac.usgs.gov/citing_our_data)\n\n### DOIs\n\n- \u003chttps://doi.org/10.5067/VIIRS/VNP46A2.001\u003e\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.ImageCollection('NOAA/VIIRS/001/VNP46A2').filter(\n ee.Filter.date('2013-01-01', '2013-07-01'));\n\n// Bidirectional Reflectance Distribution Function (BRDF)\nvar brdf = dataset.select('DNB_BRDF_Corrected_NTL');\nvar brdfVis = {\n min: 0,\n max: 100,\n palette: ['black', 'purple', 'cyan', 'green', 'yellow', 'red', 'white'],\n};\n\nMap.setCenter(-79.4, 43.1, 8);\n// Day/Night Band (DNB)\n// NightTime Light (NTL)\nMap.addLayer(brdf, brdfVis, 'DNB_BRDF_Corrected_NTL');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NOAA/NOAA_VIIRS_001_VNP46A2) \n[VNP46A2: VIIRS Lunar Gap-Filled BRDF Nighttime Lights Daily L3 Global 500m \\[deprecated\\]](/earth-engine/datasets/catalog/NOAA_VIIRS_001_VNP46A2) \nThe 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 ... \nNOAA/VIIRS/001/VNP46A2, brdf,daily,nasa,nighttime,noaa,population,viirs \n2012-01-19T00:00:00Z/2024-12-26T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5067/VIIRS/VNP46A2.001](https://doi.org/https://doi.org/10.5067/VIIRS/VNP46A2.001)\n- [https://doi.org/10.5067/VIIRS/VNP46A2.001](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NOAA_VIIRS_001_VNP46A2)"]]
