Produk Suomi National Polar-Orbiting Partnership (Suomi NPP) NASA Visible Infrared Imaging Radiometer Suite (VIIRS) Bidirectional Reflectance Distribution Function (BRDF) and Albedo Quality (VNP43IA2) Versi 1 memberikan kualitas BRDF dan Albedo pada resolusi 500 m. Produk VNP43IA2
diproduksi setiap hari menggunakan data VIIRS selama 16 hari dan diberi bobot
secara temporal hingga hari kesembilan, yang tercermin dalam nama file.
Produk VNP43IA2 memberikan informasi terkait kualitas band dan hari pengamatan yang valid dalam periode 16 hari untuk band gambar VIIRS.
Produk data VNP43 dirancang untuk mempromosikan kesinambungan rangkaian produk data BRDF/Albedo Moderate Resolution Imaging Spectroradiometer (MODIS) NASA.
Sudut zenit matahari pada tengah hari matahari lokal
BRDF_Albedo_Platform
meter
Nama platform
BRDF_Albedo_Uncertainty
meter
Bobot Penentuan (WoD) WSA
BRDF_Albedo_ValidObs_I1
d
meter
Hari pengamatan yang valid dalam periode 16 hari untuk band
I1
BRDF_Albedo_ValidObs_I2
d
meter
Hari pengamatan yang valid dalam periode 16 hari untuk band
I2
BRDF_Albedo_ValidObs_I3
d
meter
Hari pengamatan yang valid dalam periode 16 hari untuk band
I3
Snow_BRDF_Albedo
meter
Bendera salju
Tabel Kelas BRDF_Albedo_Band_Quality_I1
Nilai
Warna
Deskripsi
0
Tidak ada
kualitas terbaik, inversi penuh (WoDs, RMSE sebagian besar bagus)
1
Tidak ada
kualitas bagus, inversi penuh
2
Tidak ada
Inversi magnitudo (numobs ≥ 7)
3
Tidak ada
Inversi magnitudo (numobs ≥ 2 & 7)
Tabel Class BRDF_Albedo_Band_Quality_I2
Nilai
Warna
Deskripsi
0
Tidak ada
kualitas terbaik, inversi penuh (WoDs, RMSE sebagian besar bagus)
1
Tidak ada
kualitas bagus, inversi penuh
2
Tidak ada
Inversi magnitudo (numobs ≥ 7)
3
Tidak ada
Inversi magnitudo (numobs ≥ 2 & 7)
BRDF_Albedo_Band_Quality_I3 Class Table
Nilai
Warna
Deskripsi
0
Tidak ada
kualitas terbaik, inversi penuh (WoDs, RMSE sebagian besar bagus)
1
Tidak ada
kualitas bagus, inversi penuh
2
Tidak ada
Inversi magnitudo (numobs ≥ 7)
3
Tidak ada
Inversi magnitudo (numobs ≥ 2 & 7)
Tabel Kelas BRDF_Albedo_LandWaterType
Nilai
Warna
Deskripsi
0
Tidak ada
Laut dangkal
1
Tidak ada
Tanah (Tidak ada yang lain selain tanah)
2
Tidak ada
Garis pantai dan danau
3
Tidak ada
Perairan pedalaman dangkal
4
Tidak ada
Air sementara
5
Tidak ada
Perairan pedalaman yang dalam
6
Tidak ada
Samudra sedang atau benua
7
Tidak ada
Samudra dalam
Tabel Kelas Snow_BRDF_Albedo
Nilai
Warna
Deskripsi
0
Tidak ada
albedo bebas salju diambil
1
Tidak ada
albedo salju diambil
Persyaratan Penggunaan
Persyaratan Penggunaan
Data NASA LP DAAC dapat diakses secara bebas; namun, saat penulis memublikasikan data ini atau karya yang didasarkan pada data tersebut, penulis diminta untuk mengutip set data dalam teks publikasi dan menyertakan referensi ke set data tersebut dalam daftar referensi.
Produk Suomi National Polar-Orbiting Partnership (Suomi NPP) NASA Visible Infrared Imaging Radiometer Suite (VIIRS) Bidirectional Reflectance Distribution Function (BRDF) and Albedo Quality (VNP43IA2) Versi 1 memberikan kualitas BRDF dan Albedo pada resolusi 500 m. Produk VNP43IA2 diproduksi setiap hari menggunakan data VIIRS selama 16 hari dan diberi bobot secara temporal …
[null,null,[],[[["\u003cp\u003eThe NOAA/VIIRS/001/VNP43IA2 dataset provides daily Bidirectional Reflectance Distribution Function (BRDF) and Albedo quality information at 500m resolution, derived from Suomi NPP VIIRS imagery.\u003c/p\u003e\n"],["\u003cp\u003eThe product utilizes 16 days of VIIRS data, temporally weighted to the ninth day, offering insights into band quality and valid observation days.\u003c/p\u003e\n"],["\u003cp\u003eVNP43IA2 includes bands for BRDF inversion information, land/water type, solar zenith angle, platform details, uncertainty, valid observations, and a snow flag.\u003c/p\u003e\n"],["\u003cp\u003eUsers can access the dataset through Google Earth Engine and find comprehensive documentation, including a User's Guide and ATBD, via provided links.\u003c/p\u003e\n"],["\u003cp\u003eIt is crucial to cite the dataset appropriately when publishing research based on it, as detailed on the LP DAAC 'Citing Our Data' page.\u003c/p\u003e\n"]]],[],null,["# VNP43IA2: BRDF/Albedo Quality 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/VNP43IA2.001)\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 Quality (VNP43IA2) Version 1 product\nprovides BRDF and Albedo quality at 500m resolution. The VNP43IA2\nproduct is produced daily using 16 days of VIIRS data and is weighted\ntemporally to the ninth day, which is reflected in the file name.\nThe VNP43IA2 product provides information regarding band quality and days\nof valid observation within a 16-day period for the VIIRS imagery bands.\nThe 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/vnp43ia2_and_vnp43ma2_brdf_albedo_quality_product)\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/vnp43ia2v001/)\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 | Units | Pixel Size | Description |\n|-------------------------------|-------|------------|------------------------------------------------------------|\n| `BRDF_Albedo_Band_Quality_I1` | | meters | BRDF inversion information I1 |\n| `BRDF_Albedo_Band_Quality_I2` | | meters | BRDF inversion information I2 |\n| `BRDF_Albedo_Band_Quality_I3` | | meters | BRDF inversion information I3 |\n| `BRDF_Albedo_LandWaterType` | | meters | Land/Water type |\n| `BRDF_Albedo_LocalSolarNoon` | deg | meters | Solar zenith angle at local solar noon |\n| `BRDF_Albedo_Platform` | | meters | Platform name |\n| `BRDF_Albedo_Uncertainty` | | meters | Weight of Determination (WoD) of WSA |\n| `BRDF_Albedo_ValidObs_I1` | d | meters | Days of valid observation within 16-day period for band I1 |\n| `BRDF_Albedo_ValidObs_I2` | d | meters | Days of valid observation within 16-day period for band I2 |\n| `BRDF_Albedo_ValidObs_I3` | d | meters | Days of valid observation within 16-day period for band I3 |\n| `Snow_BRDF_Albedo` | | meters | Snow flag |\n\n**BRDF_Albedo_Band_Quality_I1 Class Table**\n\n| Value | Color | Description |\n|-------|-------|---------------------------------------------------------|\n| 0 | None | best quality, full inversion (WoDs, RMSE majority good) |\n| 1 | None | good quality, full inversion |\n| 2 | None | Magnitude inversion (numobs ≥ 7) |\n| 3 | None | Magnitude inversion (numobs ≥ 2 \\& 7) |\n\n**BRDF_Albedo_Band_Quality_I2 Class Table**\n\n| Value | Color | Description |\n|-------|-------|---------------------------------------------------------|\n| 0 | None | best quality, full inversion (WoDs, RMSE majority good) |\n| 1 | None | good quality, full inversion |\n| 2 | None | Magnitude inversion (numobs ≥ 7) |\n| 3 | None | Magnitude inversion (numobs ≥ 2 \\& 7) |\n\n**BRDF_Albedo_Band_Quality_I3 Class Table**\n\n| Value | Color | Description |\n|-------|-------|---------------------------------------------------------|\n| 0 | None | best quality, full inversion (WoDs, RMSE majority good) |\n| 1 | None | good quality, full inversion |\n| 2 | None | Magnitude inversion (numobs ≥ 7) |\n| 3 | None | Magnitude inversion (numobs ≥ 2 \\& 7) |\n\n**BRDF_Albedo_LandWaterType Class Table**\n\n| Value | Color | Description |\n|-------|-------|-------------------------------|\n| 0 | None | Shallow ocean |\n| 1 | None | Land (Nothing else but land) |\n| 2 | None | Ocean and lake shorelines |\n| 3 | None | Shallow inland water |\n| 4 | None | Ephemeral water |\n| 5 | None | Deep inland water |\n| 6 | None | Moderate or continental ocean |\n| 7 | None | Deep ocean |\n\n**Snow_BRDF_Albedo Class Table**\n\n| Value | Color | Description |\n|-------|-------|----------------------------|\n| 0 | None | snow-free albedo retrieved |\n| 1 | None | snow albedo retrieved |\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 for information on citing LP DAAC datasets.\n\n### DOIs\n\n- \u003chttps://doi.org/10.5067/VIIRS/VNP43IA2.001\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/VNP43IA2')\n .filter(ee.Filter.date('2021-06-01', '2021-06-03'));\n\nvar visualization = {\n bands: ['BRDF_Albedo_ValidObs_I1'],\n min: 35550,\n max: 45535,\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, 6);\n\nMap.addLayer(dataset, visualization, 'Days of valid observation for band I1');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NOAA/NOAA_VIIRS_001_VNP43IA2) \n[VNP43IA2: BRDF/Albedo Quality Daily L3 Global 500m SIN Grid](/earth-engine/datasets/catalog/NOAA_VIIRS_001_VNP43IA2) \nThe Suomi National Polar-Orbiting Partnership (Suomi NPP) NASA Visible Infrared Imaging Radiometer Suite (VIIRS) Bidirectional Reflectance Distribution Function (BRDF) and Albedo Quality (VNP43IA2) Version 1 product provides BRDF and Albedo quality at 500m resolution. The VNP43IA2 product is produced daily using 16 days of VIIRS data and is weighted temporally ... \nNOAA/VIIRS/001/VNP43IA2, 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/VNP43IA2.001](https://doi.org/https://doi.org/10.5067/VIIRS/VNP43IA2.001)\n- [https://doi.org/10.5067/VIIRS/VNP43IA2.001](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NOAA_VIIRS_001_VNP43IA2)"]]
