The MODIS Normalized Difference Vegetation Index
(NDVI) complements NOAA's Advanced Very High Resolution Radiometer (AVHRR) NDVI
products and provides continuity for time series historical applications. MODIS
also includes a new 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 MODIS Normalized Difference Vegetation Index (NDVI) complements NOAA's Advanced Very High Resolution Radiometer (AVHRR) NDVI products and provides continuity for time series historical applications. MODIS also includes a new Enhanced Vegetation Index (EVI) that minimizes canopy background variations and maintains sensitivity over dense vegetation conditions. The EVI also uses …
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis MODIS dataset (MOD13Q1) provides 16-day global vegetation indices (NDVI and EVI) at 250m resolution.\u003c/p\u003e\n"],["\u003cp\u003eIt includes layers for NDVI, EVI, surface reflectance, quality assessment, and observation geometry.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset covers the period from February 18, 2000, to March 6, 2017, and has been superseded by a newer version (MODIS/061/MOD13Q1).\u003c/p\u003e\n"],["\u003cp\u003eMODIS data and products acquired through the LP DAAC have no restrictions on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"]]],[],null,["# MOD13Q1.005 Vegetation Indices 16-Day Global 250m [deprecated]\n\n**Caution:** This dataset has been superseded by [MODIS/061/MOD13Q1](/earth-engine/datasets/catalog/MODIS_061_MOD13Q1).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--2017-03-06T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA LP DAAC at the USGS EROS Center](https://lpdaac.usgs.gov/dataset_discovery/modis/modis_products_table/mod13q1)\n\nCadence\n: 16 Days\n\nTags\n:\n 16-day \n evi \n global \n mod13q1 \n modis \n ndvi \n terra \n vegetation \nvegetation-indices \n\n#### Description\n\nThe MODIS Normalized Difference Vegetation Index\n(NDVI) complements NOAA's Advanced Very High Resolution Radiometer (AVHRR) NDVI\nproducts and provides continuity for time series historical applications. MODIS\nalso includes a new Enhanced Vegetation Index (EVI) that minimizes canopy\nbackground variations and maintains sensitivity over dense vegetation\nconditions. The EVI also uses the blue band to remove residual atmosphere\ncontamination caused 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 aerosols,\nand cloud shadows.\n\nMOD13AQ1 is comprised of the following layers:\n\n- NDVI: Normalized Difference Vegetation Index, Scale 0.0001\n- EVI: Enhanced Vegetation Index, Scale 0.0001\n- DetailedQA: VI Quality, see MOD13Q1 VI Quality\n- sur_refl_b01: Red surface reflectance, scale 0.0001\n- sur_refl_b02: NIR surface reflectance, scale 0.0001\n- sur_refl_b03: Blue surface reflectance, scale 0.0001\n- sur_refl_b07: MIR surface reflectance, scale 0.0001\n- ViewZenith: View zenith angle, scale 0.01\n- SolarZenith: Solar zenith angle, scale 0.01\n- RelativeAzimuth: Relative azimuth angle, scale 0.1\n- DayOfYear: Julian day of year\n- SummaryQA: Pixel reliability summary QA\n - -1 Fill/No data: Not processed\n - 0 Good data: Use with confidence\n - 1 Marginal data: Useful but look at detailed QA for more information\n - 2 Snow/ice: Pixel covered with snow/ice\n - 3: Cloudy: Pixel is cloudy\n\nMOD13Q1 IV Quality\n\n- Bits 0-1: MODLAND_QA\n - 00 (0): VI produced, good quality\n - 01 (1): VI produced, check other QA\n - 10 (2): Pixel produced, probably cloudy\n - 11 (3): Pixel not produced due to other reason (not clouds)\n- Bits 2-5: VI Usefulness\n - 0000 (0): Highest quality\n - 0001 (1): Lower quality\n - 0010 (2): Decreasing quality\n - 0100 (4): Decreasing quality\n - 1000 (8): Decreasing quality\n - 1001 (9): Decreasing quality\n - 1010 (10): Decreasing quality\n - 1100 (12): Lowest quality\n - 1101 (13): Quality so low that it is not useful\n - 1110 (14): L1B data faulty\n - 1111 (15): Not useful for any other reason/not processed\n- Bits 6-7: Aerosol quantity\n - 00 (0): Climatology\n - 01 (1): Low\n - 10 (2): Average\n - 11 (3): High\n- Bit 8: Adjacent cloud detected\n - 0: No\n - 1: Yes\n- Bit 9: Atmosphere BRDF correction performed\n - 0: No\n - 1: Yes\n- Bit 10: Mixed Clouds\n - 0: No\n - 1: Yes\n- Bits 11-13: Land/Water flag\n - 000 (0): Shallow ocean\n - 001 (1): Land\n - 010 (2): Ocean coastlines and lake shorelines\n - 011 (3): Shallow inland water\n - 100 (4): Ephemeral water\n - 101 (5): Deep inland water\n - 110 (6): Moderate or continental ocean\n - 111 (7): Deep ocean\n- Bit 14: Possible snow/ice\n - 0: No\n - 1: Yes\n- Bit 15: Possible shadow\n - 0: No\n - 1: Yes\n\nPlease visit [LP DAAC 'Citing Our Data' page](https://lpdaac.usgs.gov/citing_our_data) for information on citing LP DAAC datasets.\n\n### Bands\n\n**Bands**\n\n| Name | Pixel Size | Description |\n|------|------------|-------------|\n\n### Terms of Use\n\n**Terms of Use**\n\nMODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.\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[MOD13Q1.005 Vegetation Indices 16-Day Global 250m \\[deprecated\\]](/earth-engine/datasets/catalog/MODIS_MOD13Q1) \nThe MODIS Normalized Difference Vegetation Index (NDVI) complements NOAA's Advanced Very High Resolution Radiometer (AVHRR) NDVI products and provides continuity for time series historical applications. MODIS also includes a new Enhanced Vegetation Index (EVI) that minimizes canopy background variations and maintains sensitivity over dense vegetation conditions. The EVI also uses ... \nMODIS/MOD13Q1, 16-day,evi,global,modis,ndvi,terra,vegetation,vegetation-indices \n2000-02-18T00:00:00Z/2017-03-06T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://lpdaac.usgs.gov/dataset_discovery/modis/modis_products_table/mod13q1)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/MODIS_MOD13Q1)"]]
