[null,null,[],[[["\u003cp\u003eThe NOAA/VIIRS/001/VNP43IA1 dataset provides daily, global, 500m resolution BRDF and Albedo model parameters derived from the Suomi NPP VIIRS instrument.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset includes three kernel weights (isotropic, volumetric, and geometric) for three spectral bands (I1, I2, I3) to model the anisotropic effects of the Earth's surface.\u003c/p\u003e\n"],["\u003cp\u003eVNP43IA1 data products are generated using 16 days of VIIRS data, temporally weighted to the ninth day, ensuring continuity with NASA's MODIS BRDF/Albedo data products.\u003c/p\u003e\n"],["\u003cp\u003eUsers can access the dataset through Google Earth Engine and are requested to cite the dataset appropriately in publications using the provided DOI.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset covers the period from January 17, 2012, to June 9, 2024.\u003c/p\u003e\n"]]],[],null,["# VNP43IA1: BRDF/Albedo Model Parameters Daily L3 Global 500m SIN Grid\n\nDataset Availability\n: 2012-01-17T00:00:00Z--2024-06-09T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA LP DAAC at the USGS EROS Center](https://doi.org/10.5067/VIIRS/VNP43IA1.001)\n\nCadence\n: 1 Day\n\nTags\n:\n[land](/earth-engine/datasets/tags/land) [nasa](/earth-engine/datasets/tags/nasa) [noaa](/earth-engine/datasets/tags/noaa) [satellite-imagery](/earth-engine/datasets/tags/satellite-imagery) [surface](/earth-engine/datasets/tags/surface) [viirs](/earth-engine/datasets/tags/viirs) \n\n#### Description\n\nThe Suomi National Polar-Orbiting Partnership (Suomi NPP) NASA Visible\nInfrared Imaging Radiometer Suite (VIIRS) Bidirectional Reflectance\nDistribution Function (BRDF) and Albedo Model Parameters (VNP43IA1) Version\n1 product provides kernel weights (parameters) at 500 resolution. The\nVNP43IA1 product is produced daily using 16 days of VIIRS data, temporally\nweighted to the ninth day, which is reflected in the file name. The VNP43IA1\nproduct provides three spectrally dependent kernel weights, also known as\nmodel parameters: isotropic (fiso), volumetric (fvol), and geometric (fgeo),\nwhich can be used to model anisotropic effects of the Earth's surface.\nAll VNP43 data products are designed to promote the continuity of\nNASA's Moderate Resolution Imaging Spectroradiometer (MODIS)\nBRDF/Albedo data product suite.\n\nDocumentation:\n\n- [User's Guide](https://www.umb.edu/spectralmass/viirs-user-guide/vnp43ia1-and-vnp43ma1-brdf-albedo-model-parameters)\n\n- [Algorithm Theoretical Basis Document (ATBD)](https://lpdaac.usgs.gov/documents/194/VNP43_ATBD_V1.pdf)\n\n- [General Documentation](https://lpdaac.usgs.gov/products/vnp43ia1v001/)\n\n- [Land Product Quality Assessment website](https://landweb.modaps.eosdis.nasa.gov/browse?sensor=VIIRS&sat=SNPP)\n\n### Bands\n\n\n**Pixel Size**\n\n500 meters\n\n**Bands**\n\n| Name | Pixel Size | Description |\n|-----------------------------------------|------------|-------------------------------------------|\n| `BRDF_Albedo_Band_Mandatory_Quality_I1` | meters | BRDF/Albedo mandatory quality for band I1 |\n| `BRDF_Albedo_Band_Mandatory_Quality_I2` | meters | BRDF/Albedo mandatory quality for band I2 |\n| `BRDF_Albedo_Band_Mandatory_Quality_I3` | meters | BRDF/Albedo mandatory quality for band I3 |\n| `BRDF_Albedo_Parameters_fiso_I1` | meters | Isotropic parameter for band I1 |\n| `BRDF_Albedo_Parameters_fvol_I1` | meters | Volumetric parameter for band I1 |\n| `BRDF_Albedo_Parameters_fgeo_I1` | meters | Geometric parameter for band I1 |\n| `BRDF_Albedo_Parameters_fiso_I2` | meters | Isotropic parameter for band I2 |\n| `BRDF_Albedo_Parameters_fvol_I2` | meters | Volumetric parameter for band I2 |\n| `BRDF_Albedo_Parameters_fgeo_I2` | meters | Geometric parameter for band I2 |\n| `BRDF_Albedo_Parameters_fiso_I3` | meters | Isotropic parameter for band I3 |\n| `BRDF_Albedo_Parameters_fvol_I3` | meters | Volumetric parameter for band I3 |\n| `BRDF_Albedo_Parameters_fgeo_I3` | meters | Geometric parameter for band I3 |\n\n**BRDF_Albedo_Band_Mandatory_Quality_I1 Class Table**\n\n| Value | Color | Description |\n|-------|-------|---------------------------|\n| 0 | None | Full BRDF inversions |\n| 1 | None | Magnitude BRDF inversions |\n\n**BRDF_Albedo_Band_Mandatory_Quality_I2 Class Table**\n\n| Value | Color | Description |\n|-------|-------|---------------------------|\n| 0 | None | Full BRDF inversions |\n| 1 | None | Magnitude BRDF inversions |\n\n**BRDF_Albedo_Band_Mandatory_Quality_I3 Class Table**\n\n| Value | Color | Description |\n|-------|-------|---------------------------|\n| 0 | None | Full BRDF inversions |\n| 1 | None | Magnitude BRDF inversions |\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\n [LP DAAC 'Citing Our Data' page](https://lpdaac.usgs.gov/citing_our_data)\n for information on citing LP DAAC datasets.\n\n### DOIs\n\n- \u003chttps://doi.org/10.5067/VIIRS/VNP43IA1.001\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/VNP43IA1')\n .filter(ee.Filter.date('2017-03-10', '2017-03-11'));\n\nvar visualization = {\n bands: ['BRDF_Albedo_Parameters_fiso_I1'],\n min: 0,\n max: 1,\n palette: [\n '000080','0000d9','4000ff','8000ff','0080ff','00ffff',\n '00ff80','80ff00','daff00','ffff00','fff500','FFda00',\n 'ffb000','ffa400','ff4f00','ff2500','ff0a00','ff00ff',\n ]\n};\n\nMap.setCenter(89, 58, 3);\n\nMap.addLayer(dataset, visualization, 'Isotropic parameter for band I1');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NOAA/NOAA_VIIRS_001_VNP43IA1) \n[VNP43IA1: BRDF/Albedo Model Parameters Daily L3 Global 500m SIN Grid](/earth-engine/datasets/catalog/NOAA_VIIRS_001_VNP43IA1) \nThe Suomi National Polar-Orbiting Partnership (Suomi NPP) NASA Visible Infrared Imaging Radiometer Suite (VIIRS) Bidirectional Reflectance Distribution Function (BRDF) and Albedo Model Parameters (VNP43IA1) Version 1 product provides kernel weights (parameters) at 500 resolution. The VNP43IA1 product is produced daily using 16 days of VIIRS data, temporally weighted to the ... \nNOAA/VIIRS/001/VNP43IA1, land,nasa,noaa,satellite-imagery,surface,viirs \n2012-01-17T00:00:00Z/2024-06-09T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5067/VIIRS/VNP43IA1.001](https://doi.org/https://doi.org/10.5067/VIIRS/VNP43IA1.001)\n- [https://doi.org/10.5067/VIIRS/VNP43IA1.001](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NOAA_VIIRS_001_VNP43IA1)"]]
