MYD13Q1.061 Aqua Vegetation Indices 16-Day Global 250m

Dataset Availability: 2002-07-04T00:00:00Z–2023-02-26T00:00:00
Dataset Provider: NASA LP DAAC at the USGS EROS Center
Earth Engine Snippet: ee.ImageCollection("MODIS/061/MYD13Q1")

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Tags: 16-day aqua evi global modis nasa ndvi usgs vegetation
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:

Bands

Resolution
250 meters

Bands

Name	Units	Min	Max	Scale	Wavelength	Description
`NDVI`		-2000	10000	0.0001		Normalized Difference Vegetation Index
`EVI`		-2000	10000	0.0001		Enhanced Vegetation Index
`DetailedQA`						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	645nm	Red surface reflectance
`sur_refl_b02`		0	10000	0.0001	858nm	NIR surface reflectance
`sur_refl_b03`		0	10000	0.0001	469nm	Blue surface reflectance
`sur_refl_b07`		0	10000	0.0001	2130nm/2105 - 2155nm	MIR surface reflectance
`ViewZenith`	degrees	0	18000	0.01		View zenith angle
`SolarZenith`	degrees	0	18000	0.01		Solar zenith angle
`RelativeAzimuth`	degrees	-18000	18000	0.01		Relative azimuth angle
`DayOfYear`		1	366			Julian day of year
`SummaryQA`						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

Please visit LP DAAC 'Citing Our Data' page for information on citing LP DAAC datasets.

DOIs

https://doi.org/10.5067/MODIS/MYD13Q1.061

Explore in Earth Engine

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: 0.0,
  max: 8000.0,
  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');

MYD13Q1.061 Aqua Vegetation Indices 16-Day Global 250m

MODIS/061/MYD13Q1, 16-day,aqua,evi,global,modis,nasa,ndvi,usgs,vegetation

2002-07-04T00:00:00Z/2023-02-26T00:00:00

Google Earth Engine

https://developers.google.com/earth-engine/datasets

https://doi.org/10.5067/MODIS/MYD13Q1.061

MYD13Q1.061 Aqua Vegetation Indices 16-Day Global 250m

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Description

Bands

Terms of Use

Citations

DOIs

Explore in Earth Engine

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