Produk MCD15A3H Version 6.1 Moderate Resolution Imaging Spectroradiometer (MODIS) Level 4, Combined Fraction of Photosynthetically Active Radiation (FPAR), dan Leaf Area Index (LAI) adalah set data gabungan 4 hari dengan ukuran piksel 500 meter. Algoritma memilih piksel terbaik yang tersedia dari semua akuisisi kedua sensor MODIS yang berada di satelit Terra dan Aqua NASA dalam periode 4 hari.
FPAR yang diserap oleh elemen hijau kanopi vegetasi
Lai
0
100
0,1
meter
Tidak ada
Area daun hijau satu sisi per unit area tanah di kanopi berdaun lebar; setengah dari total area permukaan jarum per unit area tanah di kanopi tumbuhan runjung
FparLai_QC
meter
Tidak ada
Kualitas untuk Lai dan Fpar
Bitmask untuk FparLai_QC
Bit 0: Bit MODLAND_QC
0: Kualitas bagus (algoritma utama dengan atau tanpa saturasi)
1: Kualitas lainnya (algoritma cadangan atau nilai pengisi)
Bit 1: Sensor
0: Terra
1: Aqua
Bit 2: Detektor mati
0: Detektor tampaknya baik untuk hingga 50% saluran 1, 2
1: Pendeteksi yang tidak aktif menyebabkan >50% pengambilan pendeteksi yang berdekatan
Bit 3-4: Status cloud
0: Awan signifikan TIDAK ada (cerah)
1: Awan signifikan ADA
2: Cloud campuran ada di piksel
3: Status awan tidak ditentukan, diasumsikan cerah
Bit 5-7: SCF_QC
0: Metode Utama (RT) yang digunakan tanpa saturasi, hasil terbaik yang mungkin
1: Metode Utama (RT) yang digunakan dengan saturasi, baik, dan sangat dapat digunakan
2: Metode Main (RT) gagal karena geometri yang buruk, algoritma empiris digunakan
3: Metode Utama (RT) gagal karena masalah selain geometri, algoritma empiris digunakan
4: Pixel tidak diproduksi sama sekali, nilai tidak dapat
diambil (kemungkinan alasan: data L1B buruk, data
MOD09GA tidak dapat digunakan)
FparExtra_QC
meter
Tidak ada
Kualitas detail ekstra untuk LAI dan FPAR
Bitmask untuk FparExtra_QC
Bit 0-1: Biaya terkait darat-laut
0: LAND
1: PANTAI
2: AIR TAWAR
3: OCEAN
Bit 2: Es salju
0: Tidak ada salju/es yang terdeteksi
1: Salju/es terdeteksi
Bit 3: Aerosol
0: Tidak ada atau terdeteksi kadar aerosol atmosfer yang rendah
1: Kadar aerosol rata-rata atau tinggi terdeteksi
Bit 4: Cirrus
0: Tidak ada awan sirrus yang terdeteksi
1: Cirrus terdeteksi
Bit 5: Masker awan internal
0: Tidak ada awan
1: Awan terdeteksi
Bit 6: Bayangan awan
0: Tidak ada bayangan awan terdeteksi
1: Bayangan awan terdeteksi
Bit 7: Masker bioma SCF
0: Bioma di luar interval <1,4>
1: Bioma dalam interval <1,4>
FparStdDev
0
100
0,01
meter
Tidak ada
Simpangan baku Fpar
LaiStdDev
0
100
0,1
meter
Tidak ada
Simpangan baku untuk Lai
Persyaratan Penggunaan
Persyaratan Penggunaan
Data dan produk MODIS yang diperoleh melalui LP DAAC tidak memiliki batasan pada penggunaan, penjualan, atau redistribusi berikutnya.
Produk MCD15A3H Version 6.1 Moderate Resolution Imaging Spectroradiometer (MODIS) Level 4, Combined Fraction of Photosynthetically Active Radiation (FPAR), dan Leaf Area Index (LAI) adalah set data gabungan 4 hari dengan ukuran piksel 500 meter. Algoritma memilih piksel terbaik yang tersedia dari semua akuisisi kedua sensor MODIS …
[null,null,[],[[["\u003cp\u003eMCD15A3H V6.1 provides a 4-day composite of global Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR) data at 500m resolution.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset utilizes data from both MODIS sensors on NASA's Terra and Aqua satellites, selecting the best pixel within the 4-day period.\u003c/p\u003e\n"],["\u003cp\u003eLAI represents the one-sided green leaf area per unit ground area, while FPAR quantifies the fraction of photosynthetically active radiation absorbed by vegetation.\u003c/p\u003e\n"],["\u003cp\u003eData quality information is provided through separate bands indicating cloud state, sensor, and retrieval algorithm details for both LAI and FPAR.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is freely available for use, redistribution, and sale through the NASA Land Processes Distributed Active Archive Center (LP DAAC).\u003c/p\u003e\n"]]],[],null,["Dataset Availability\n: 2002-07-04T00:00:00Z--2025-08-21T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA LP DAAC at the USGS EROS Center](https://doi.org/10.5067/MODIS/MCD15A3H.061)\n\nCadence\n: 4 Days\n\nTags\n:\n [fpar](/earth-engine/datasets/tags/fpar) [global](/earth-engine/datasets/tags/global) [lai](/earth-engine/datasets/tags/lai) [modis](/earth-engine/datasets/tags/modis) [nasa](/earth-engine/datasets/tags/nasa) [plant-productivity](/earth-engine/datasets/tags/plant-productivity) [usgs](/earth-engine/datasets/tags/usgs) [vegetation](/earth-engine/datasets/tags/vegetation) \n 4-day \nmcd15a3h \n\nDescription \nThe MCD15A3H Version 6.1 Moderate Resolution Imaging Spectroradiometer (MODIS) Level 4, Combined Fraction of Photosynthetically Active Radiation (FPAR), and Leaf Area Index (LAI) product is a 4-day composite data set with 500 meter pixel size. The algorithm chooses the best pixel available from all the acquisitions of both MODIS sensors located on NASA's Terra and Aqua satellites from within the 4-day period.\n\nDocumentation:\n\n- [User's Guide](https://lpdaac.usgs.gov/documents/624/MOD15_User_Guide_V6.pdf)\n\n- [Algorithm Theoretical Basis Document (ATBD)](https://lpdaac.usgs.gov/documents/90/MOD15_ATBD.pdf)\n\n- [General Documentation](https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/61/MCD15A3H)\n\nBands\n\n\n**Pixel Size**\n\n500 meters\n\n**Bands**\n\n| Name | Min | Max | Scale | Pixel Size | Wavelength | Description |\n|----------------|-----|-----|-------|------------|------------|----------------------------------------------------------------------------------------------------------------------------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `Fpar` | 0 | 100 | 0.01 | meters | 400-700nm | FPAR absorbed by the green elements of a vegetation canopy |\n| `Lai` | 0 | 100 | 0.1 | meters | None | One-sided green leaf area per unit ground area in broadleaf canopies; one-half the total needle surface area per unit ground area in coniferous canopies |\n| `FparLai_QC` | | | | meters | None | Quality for Lai and Fpar |\n| Bitmask for FparLai_QC - Bit 0: MODLAND_QC bits - 0: Good quality (main algorithm with or without saturation) - 1: Other quality (back-up algorithm or fill values) - Bit 1: Sensor - 0: Terra - 1: Aqua - Bit 2: Dead detector - 0: Detectors apparently fine for up to 50% of channels 1, 2 - 1: Dead detectors caused \\\u003e50% adjacent detector retrieval - Bits 3-4: Cloud state - 0: Significant clouds NOT present (clear) - 1: Significant clouds WERE present - 2: Mixed cloud present in pixel - 3: Cloud state not defined, assumed clear - Bits 5-7: SCF_QC - 0: Main (RT) method used with no saturation, best result possible - 1: Main (RT) method used with saturation, good and very usable - 2: Main (RT) method failed due to bad geometry, empirical algorithm used - 3: Main (RT) method failed due to problems other than geometry, empirical algorithm used - 4: Pixel not produced at all, value couldn''t be retrieved (possible reasons: bad L1B data, unusable MOD09GA data) ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n| `FparExtra_QC` | | | | meters | None | Extra detail quality for LAI and FPAR |\n| Bitmask for FparExtra_QC - Bits 0-1: Land-sea pass-thru - 0: LAND - 1: SHORE - 2: FRESHWATER - 3: OCEAN - Bit 2: Snow ice - 0: No snow/ice detected - 1: Snow/ice detected - Bit 3: Aerosol - 0: No or low atmospheric aerosol levels detected - 1: Average or high aerosol levels detected - Bit 4: Cirrus - 0: No cirrus detected - 1: Cirrus detected - Bit 5: Internal cloud mask - 0: No clouds - 1: Clouds were detected - Bit 6: Cloud shadow - 0: No cloud shadow detected - 1: Cloud shadow detected - Bit 7: SCF biome mask - 0: Biome outside interval \\\u003c1,4\\\u003e - 1: Biome in interval \\\u003c1,4\\\u003e ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n| `FparStdDev` | 0 | 100 | 0.01 | meters | None | Standard deviation of Fpar |\n| `LaiStdDev` | 0 | 100 | 0.1 | meters | None | Standard deviation for Lai |\n\nTerms of Use\n\n**Terms of Use**\n\nMODIS data and products acquired through the LP DAAC\nhave no restrictions on subsequent use, sale, or redistribution.\n\nCitations \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\nDOIs\n\n- \u003chttps://doi.org/10.5067/MODIS/MCD15A3H.061\u003e\n\nExplore with Earth Engine **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\nCode Editor (JavaScript) \n\n```javascript\nvar dataset = ee.ImageCollection('MODIS/061/MCD15A3H');\nvar defaultVisualization = dataset.first().select('Fpar');\nvar defaultVisualizationVis = {\n min: 0.0,\n max: 100.0,\n palette: ['e1e4b4', '999d60', '2ec409', '0a4b06'],\n};\nMap.setCenter(6.746, 46.529, 6);\nMap.addLayer(\n defaultVisualization, defaultVisualizationVis, 'Default visualization');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/MODIS/MODIS_061_MCD15A3H) \n[MCD15A3H.061 MODIS Leaf Area Index/FPAR 4-Day Global 500m](/earth-engine/datasets/catalog/MODIS_061_MCD15A3H) \nThe MCD15A3H Version 6.1 Moderate Resolution Imaging Spectroradiometer (MODIS) Level 4, Combined Fraction of Photosynthetically Active Radiation (FPAR), and Leaf Area Index (LAI) product is a 4-day composite data set with 500 meter pixel size. The algorithm chooses the best pixel available from all the acquisitions of both MODIS sensors ... \nMODIS/061/MCD15A3H, fpar,global,lai,modis,nasa,plant-productivity,usgs,vegetation \n2002-07-04T00:00:00Z/2025-08-21T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5067/MODIS/MCD15A3H.061](https://doi.org/https://doi.org/10.5067/MODIS/MCD15A3H.061)\n- [https://doi.org/10.5067/MODIS/MCD15A3H.061](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MCD15A3H)"]]
