The MOD13Q1 V6 product provides a Vegetation Index (VI)
value at a per pixel basis. There are two primary vegetation layers.
The first is the Normalized Difference Vegetation Index (NDVI)
which is referred to as the continuity index to the existing National
Oceanic and Atmospheric Administration-Advanced Very High Resolution
Radiometer (NOAA-AVHRR) derived NDVI. The second vegetation layer
is the Enhanced Vegetation Index (EVI) that minimizes canopy background
variations and maintains sensitivity over dense vegetation conditions.
The EVI also uses the blue band to remove residual atmosphere contamination
caused by smoke and sub-pixel thin cloud clouds. The MODIS NDVI
and EVI products are computed from atmospherically corrected bi-directional
surface reflectances that have been masked for water, clouds, heavy
aerosols, and cloud shadows.
The MOD13Q1 V6 product provides a Vegetation Index (VI) value at a per pixel basis. There are two primary vegetation layers. The first is the Normalized Difference Vegetation Index (NDVI) which is referred to as the continuity index to the existing National Oceanic and Atmospheric Administration-Advanced Very High Resolution Radiometer …
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis MOD13Q1 V6 dataset provides vegetation indices (NDVI and EVI) at a 250m resolution, but has been superseded by a newer version.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset covers the globe from 2000-02-18 to 2023-02-02 and includes quality indicators and surface reflectance bands.\u003c/p\u003e\n"],["\u003cp\u003eNDVI and EVI are calculated from atmospherically corrected data, masked for clouds, water, and aerosols, to minimize unwanted variations.\u003c/p\u003e\n"],["\u003cp\u003eMODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.\u003c/p\u003e\n"]]],["This dataset, MOD13Q1 V6, provides 16-day global vegetation index values at a 250-meter pixel size from 2000-02-18 to 2023-02-02. Key data layers include the Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI), derived from atmospherically corrected surface reflectances. Users can access the data via Earth Engine using `ee.ImageCollection(\"MODIS/006/MOD13Q1\")`. It is important to note that this dataset has been superseded by MODIS/061/MOD13Q1.\n"],null,["**Caution:** This dataset has been superseded by [MODIS/061/MOD13Q1](/earth-engine/datasets/catalog/MODIS_061_MOD13Q1). \n\nDataset Availability\n: 2000-02-18T00:00:00Z--2023-02-02T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA LP DAAC at the USGS EROS Center](https://doi.org/10.5067/MODIS/MOD13Q1.006)\n\nCadence\n: 16 Days\n\nTags\n:\n 16-day \n evi \n global \n mod13q1 \n modis \n nasa \n ndvi \n terra \n usgs \n vegetation \nvegetation-indices \n\nDescription \nThe MOD13Q1 V6 product provides a Vegetation Index (VI)\nvalue at a per pixel basis. There are two primary vegetation layers.\nThe first is the Normalized Difference Vegetation Index (NDVI)\nwhich is referred to as the continuity index to the existing National\nOceanic and Atmospheric Administration-Advanced Very High Resolution\nRadiometer (NOAA-AVHRR) derived NDVI. The second vegetation layer\nis the Enhanced Vegetation Index (EVI) that minimizes canopy background\nvariations and maintains sensitivity over dense vegetation conditions.\nThe EVI also uses the blue band to remove residual atmosphere contamination\ncaused by smoke and sub-pixel thin cloud clouds. The MODIS NDVI\nand EVI products are computed from atmospherically corrected bi-directional\nsurface reflectances that have been masked for water, clouds, heavy\naerosols, and cloud shadows.\n\nDocumentation:\n\n- [User's Guide](https://lpdaac.usgs.gov/documents/103/MOD13_User_Guide_V6.pdf)\n\n- [Algorithm Theoretical Basis Document (ATBD)](https://lpdaac.usgs.gov/documents/104/MOD13_ATBD.pdf)\n\n- [General Documentation](https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/6/MOD13A2)\n\nBands\n\n\n**Pixel Size**\n\n250 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Scale | Wavelength | Description |\n|-------------------|-------|--------|-------|--------|----------------------|----------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `NDVI` | None | -2000 | 10000 | 0.0001 | None | Normalized Difference Vegetation Index |\n| `EVI` | None | -2000 | 10000 | 0.0001 | None | Enhanced Vegetation Index |\n| `DetailedQA` | None | | | | None | VI quality indicators |\n| Bitmask for DetailedQA - Bits 0-1: VI quality (MODLAND QA Bits) - 0: VI produced with good quality - 1: VI produced, but check other QA - 2: Pixel produced, but most probably cloudy - 3: Pixel not produced due to other reasons than clouds - Bits 2-5: VI usefulness - 0: Highest quality - 1: Lower quality - 2: Decreasing quality - 4: Decreasing quality - 8: Decreasing quality - 9: Decreasing quality - 10: Decreasing quality - 12: Lowest quality - 13: Quality so low that it is not useful - 14: L1B data faulty - 15: Not useful for any other reason/not processed - Bits 6-7: Aerosol Quantity - 0: Climatology - 1: Low - 2: Intermediate - 3: High - Bit 8: Adjacent cloud detected - 0: No - 1: Yes - Bit 9: Atmosphere BRDF correction - 0: No - 1: Yes - Bit 10: Mixed Clouds - 0: No - 1: Yes - Bits 11-13: Land/water mask - 0: Shallow ocean - 1: Land (nothing else but land) - 2: Ocean coastlines and lake shorelines - 3: Shallow inland water - 4: Ephemeral water - 5: Deep inland water - 6: Moderate or continental ocean - 7: Deep ocean - Bit 14: Possible snow/ice - 0: No - 1: Yes - Bit 15: Possible shadow - 0: No - 1: Yes ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n| `sur_refl_b01` | None | 0 | 10000 | 0.0001 | 645nm | Red surface reflectance |\n| `sur_refl_b02` | None | 0 | 10000 | 0.0001 | 858nm | NIR surface reflectance |\n| `sur_refl_b03` | None | 0 | 10000 | 0.0001 | 469nm | Blue surface reflectance |\n| `sur_refl_b07` | None | 0 | 10000 | 0.0001 | 2130nm/2105 - 2155nm | MIR surface reflectance |\n| `ViewZenith` | deg | 0 | 18000 | 0.01 | None | View zenith angle |\n| `SolarZenith` | deg | 0 | 18000 | 0.01 | None | Solar zenith angle |\n| `RelativeAzimuth` | deg | -18000 | 18000 | 0.01 | None | Relative azimuth angle |\n| `DayOfYear` | None | 1 | 366 | | None | Julian day of year |\n| `SummaryQA` | None | | | | None | Quality reliability of VI pixel |\n| Bitmask for SummaryQA - Bits 0-1: VI quality (MODLAND QA Bits) - 0: Good data, use with confidence - 1: Marginal data, useful but look at detailed QA for more information - 2: Pixel covered with snow/ice - 3: Pixel is cloudy ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\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/MOD13Q1.006\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/006/MOD13Q1')\n .filter(ee.Filter.date('2018-01-01', '2018-05-01'));\nvar ndvi = dataset.select('NDVI');\nvar ndviVis = {\n min: 0,\n max: 8000,\n palette: [\n 'ffffff', 'ce7e45', 'df923d', 'f1b555', 'fcd163', '99b718', '74a901',\n '66a000', '529400', '3e8601', '207401', '056201', '004c00', '023b01',\n '012e01', '011d01', '011301'\n ],\n};\nMap.setCenter(6.746, 46.529, 2);\nMap.addLayer(ndvi, ndviVis, 'NDVI');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/MODIS/MODIS_006_MOD13Q1) \n[MOD13Q1.006 Terra Vegetation Indices 16-Day Global 250m \\[deprecated\\]](/earth-engine/datasets/catalog/MODIS_006_MOD13Q1) \nThe MOD13Q1 V6 product provides a Vegetation Index (VI) value at a per pixel basis. There are two primary vegetation layers. The first is the Normalized Difference Vegetation Index (NDVI) which is referred to as the continuity index to the existing National Oceanic and Atmospheric Administration-Advanced Very High Resolution Radiometer ... \nMODIS/006/MOD13Q1, 16-day,evi,global,modis,nasa,ndvi,terra,usgs,vegetation,vegetation-indices \n2000-02-18T00:00:00Z/2023-02-02T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5067/MODIS/MOD13Q1.006](https://doi.org/https://doi.org/10.5067/MODIS/MOD13Q1.006)\n- [https://doi.org/10.5067/MODIS/MOD13Q1.006](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/MODIS_006_MOD13Q1)"]]
