![MODIS/061/MOD13A3](https://developers.google.com/earth-engine/datasets/images/MODIS/MODIS_061_MOD13A3_sample.png) Dataset Availability : 2000-02-01T00:00:00Z--2026-10-01T00:00:00Z Dataset Producer : [NASA LP DAAC at the USGS EROS Center](https://doi.org/10.5067/MODIS/MOD13A3.061) Cadence : 1 Month Tags : [evi](https://developers.google.com/earth-engine/datasets/tags/evi) [global](https://developers.google.com/earth-engine/datasets/tags/global) [modis](https://developers.google.com/earth-engine/datasets/tags/modis) [monthly](https://developers.google.com/earth-engine/datasets/tags/monthly) [nasa](https://developers.google.com/earth-engine/datasets/tags/nasa) [ndvi](https://developers.google.com/earth-engine/datasets/tags/ndvi) [terra](https://developers.google.com/earth-engine/datasets/tags/terra) [usgs](https://developers.google.com/earth-engine/datasets/tags/usgs) [vegetation](https://developers.google.com/earth-engine/datasets/tags/vegetation) [vegetation-indices](https://developers.google.com/earth-engine/datasets/tags/vegetation-indices) #### Description The MOD13A3 V6.1 product data is provided monthly at 1 kilometer (km) spatial resolution. In generating this monthly product, the algorithm ingests all the MOD13A2 products that overlap the month and employs a weighted temporal average. Vegetation indices are used for global monitoring of vegetation conditions and are used in products displaying land cover and land cover changes. These data may be used as input for modeling global biogeochemical and hydrologic processes as well as global and regional climate. Additional applications include characterizing land surface biophysical properties and processes, such as primary production and land cover conversion. Documentation: - [User's Guide](https://lpdaac.usgs.gov/documents/621/MOD13_User_Guide_V61.pdf) - [Algorithm Theoretical Basis Document (ATBD)](https://lpdaac.usgs.gov/documents/104/MOD13_ATBD.pdf) - [General Documentation](https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/61/MOD13A3) ### Bands **Bands** Pixel size: 1000 meters (all bands) | Name | Units | Min | Max | Scale | Pixel Size | Wavelength | Description | |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| | `NDVI` | | -2000 | 10000 | 0.0001 | 1000 meters | None | Monthly NDVI average | | `EVI` | | -2000 | 10000 | 0.0001 | 1000 meters | None | Monthly EVI average | | `DetailedQA` | | | | | 1000 meters | None | VI Quality indicators | | 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 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| | `sur_refl_b01` | | 0 | 10000 | 0.0001 | 1000 meters | 620-670nm | Surface reflectance band 1 (red) | | `sur_refl_b02` | | 0 | 10000 | 0.0001 | 1000 meters | 841-876nm | Surface reflectance band 2 (near-infrared) | | `sur_refl_b03` | | 0 | 10000 | 0.0001 | 1000 meters | 459-479nm | Surface reflectance band 3 (blue) | | `sur_refl_b07` | | 0 | 10000 | 0.0001 | 1000 meters | 2105-2155nm | Surface reflectance band 7 (mid-infrared) | | `ViewZenith` | deg | 0 | 18000 | 0.01 | 1000 meters | None | View zenith angle of VI Pixel | | `SolarZenith` | deg | 0 | 18000 | 0.01 | 1000 meters | None | Sun zenith angle of VI pixel | | `RelativeAzimuth` | deg | -18000 | 18000 | 0.01 | 1000 meters | None | Relative azimuth angle of VI pixel | | `SummaryQA` | | | | | 1000 meters | None | Quality reliability of VI pixel | **SummaryQA Class Table** | Value | Color | Description | |---|---|---| | 0 | None | Good Data: use with confidence | | 1 | None | Marginal Data: useful, but look at other QA information | | 2 | None | Snow/Ice: target covered with snow/ice | | 3 | None | Cloudy: target not visible, covered with cloud | ### Terms of Use **Terms of Use** MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution. ### Citations Citations: - Please visit [LP DAAC 'Citing Our Data' page](https://lpdaac.usgs.gov/citing_our_data) for information on citing LP DAAC datasets. ### DOIs - ### Explore with Earth Engine > [!NOTE] > **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) ### Code Editor (JavaScript) ```javascript var dataset = ee.ImageCollection('MODIS/061/MOD13A3') .filter(ee.Filter.date('2020-01-01', '2023-05-01')); var ndvi = dataset.select('NDVI'); var ndviVis = { min: 0, max: 9000, palette: [ 'ffffff', 'ce7e45', 'df923d', 'f1b555', 'fcd163', '99b718', '74a901', '66a000', '529400', '3e8601', '207401', '056201', '004c00', '023b01', '012e01', '011d01', '011301' ], }; Map.setCenter(6.746, 46.529, 2); Map.addLayer(ndvi, ndviVis, 'NDVI'); ``` [Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/MODIS/MODIS_061_MOD13A3) [MOD13A3.061 Vegetation Indices Monthly L3 Global 1 km SIN Grid](https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MOD13A3) The MOD13A3 V6.1 product data is provided monthly at 1 kilometer (km) spatial resolution. In generating this monthly product, the algorithm ingests all the MOD13A2 products that overlap the month and employs a weighted temporal average. Vegetation indices are used for global monitoring of vegetation conditions and are used in ... MODIS/061/MOD13A3, evi,global,modis,monthly,nasa,ndvi,terra,usgs,vegetation,vegetation-indices 2000-02-01T00:00:00Z/2026-10-01T00:00:00Z -90 -180 90 180 Google Earth Engine https://developers.google.com/earth-engine/datasets - [https://doi.org/10.5067/MODIS/MOD13A3.061](https://doi.org/https://doi.org/10.5067/MODIS/MOD13A3.061) - [https://doi.org/10.5067/MODIS/MOD13A3.061](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MOD13A3)