![MODIS/061/MYD13Q1](https://developers.google.com/earth-engine/datasets/images/MODIS/MODIS_061_MYD13Q1_sample.png) Dataset Availability : 2002-07-04T00:00:00Z--2026-10-24T00:00:00Z Dataset Producer : [NASA LP DAAC at the USGS EROS Center](https://doi.org/10.5067/MODIS/MYD13Q1.061) Cadence : 16 Days Tags : [16-day](https://developers.google.com/earth-engine/datasets/tags/16-day.md.txt) [aqua](https://developers.google.com/earth-engine/datasets/tags/aqua.md.txt) [evi](https://developers.google.com/earth-engine/datasets/tags/evi.md.txt) [global](https://developers.google.com/earth-engine/datasets/tags/global.md.txt) [modis](https://developers.google.com/earth-engine/datasets/tags/modis.md.txt) [nasa](https://developers.google.com/earth-engine/datasets/tags/nasa.md.txt) [ndvi](https://developers.google.com/earth-engine/datasets/tags/ndvi.md.txt) [usgs](https://developers.google.com/earth-engine/datasets/tags/usgs.md.txt) [vegetation](https://developers.google.com/earth-engine/datasets/tags/vegetation.md.txt) [vegetation-indices](https://developers.google.com/earth-engine/datasets/tags/vegetation-indices.md.txt) myd13q1 #### Description The MYD13Q1 V6.1 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. Documentation: - [User's Guide](https://lpdaac.usgs.gov/documents/103/MOD13_User_Guide_V6.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/MOD13A2) ### Bands **Bands** Pixel size: 250 meters (all bands) | Name | Units | Min | Max | Scale | Pixel Size | Wavelength | Description | |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| | `NDVI` | | -2000 | 10000 | 0.0001 | 250 meters | None | Normalized Difference Vegetation Index | | `EVI` | | -2000 | 10000 | 0.0001 | 250 meters | None | Enhanced Vegetation Index | | `DetailedQA` | | | | | 250 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 | 250 meters | 645nm | Red surface reflectance | | `sur_refl_b02` | | 0 | 10000 | 0.0001 | 250 meters | 858nm | NIR surface reflectance | | `sur_refl_b03` | | 0 | 10000 | 0.0001 | 250 meters | 469nm | Blue surface reflectance | | `sur_refl_b07` | | 0 | 10000 | 0.0001 | 250 meters | 2130nm/2105 - 2155nm | MIR surface reflectance | | `ViewZenith` | deg | 0 | 18000 | 0.01 | 250 meters | None | View zenith angle | | `SolarZenith` | deg | 0 | 18000 | 0.01 | 250 meters | None | Solar zenith angle | | `RelativeAzimuth` | deg | -18000 | 18000 | 0.01 | 250 meters | None | Relative azimuth angle | | `DayOfYear` | | 1 | 366 | | 250 meters | None | Julian day of year | | `SummaryQA` | | | | | 250 meters | None | Quality reliability of VI pixel | | 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 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ### 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/MYD13Q1') .filter(ee.Filter.date('2018-01-01', '2018-05-01')); var ndvi = dataset.select('NDVI'); var ndviVis = { min: 0, max: 8000, 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_MYD13Q1) [MYD13Q1.061 Aqua Vegetation Indices 16-Day Global 250m](https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MYD13Q1.md.txt) The MYD13Q1 V6.1 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 ... MODIS/061/MYD13Q1, 16-day,aqua,evi,global,modis,nasa,ndvi,usgs,vegetation,vegetation-indices 2002-07-04T00:00:00Z/2026-10-24T00:00:00Z -90 -180 90 180 Google Earth Engine https://developers.google.com/earth-engine/datasets - [https://doi.org/10.5067/MODIS/MYD13Q1.061](https://doi.org/https://doi.org/10.5067/MODIS/MYD13Q1.061) - [https://doi.org/10.5067/MODIS/MYD13Q1.061](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MYD13Q1)