AI-generated Key Takeaways
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The Normalized Difference Water Index (NDWI) dataset, available from 2000-02-24 to 2023-02-10 and provided by Google, measures the liquid water content of vegetation canopies with a daily cadence.
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The NDWI product, derived from MODIS/MCD43A4 surface reflectance composites, is sensitive to changes in vegetation water content and ranges from -1.0 to 1.0.
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This dataset contains a single band named 'NDWI' with a pixel size of 463.313 meters, representing the Normalized Difference Water Index.
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MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.
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The dataset can be explored and analyzed using Google Earth Engine, a platform free for research, education, and nonprofit use, with example code provided for accessing and visualizing the data.
- Dataset Availability
- 2000-02-24T00:00:00Z–2023-02-10T00:00:00Z
- Dataset Provider
- Cadence
- 1 Day
- Tags
Description
The Normalized Difference Water Index (NDWI) is sensitive to changes in liquid water content of vegetation canopies. It is derived from the Near-IR band and a second IR band, ≈1.24μm when available and the nearest available IR band otherwise. It ranges in value from -1.0 to 1.0. See Gao (1996) for details. This product is generated from the MODIS/006/MCD43A4 surface reflectance composites.
Bands
Bands
| Name | Pixel Size | Description |
|---|---|---|
NDWI |
463.313 meters | Normalized Difference Water Index |
Terms of Use
Terms of Use
MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.
Explore with Earth Engine
Code Editor (JavaScript)
var dataset = ee.ImageCollection('MODIS/MCD43A4_006_NDWI') .filter(ee.Filter.date('2018-04-01', '2018-06-01')); var colorized = dataset.select('NDWI'); var colorizedVis = { min: 0.0, max: 1.0, palette: ['0000ff', '00ffff', 'ffff00', 'ff0000', 'ffffff'], }; Map.setCenter(-7.03125, 31.0529339857, 2); Map.addLayer(colorized, colorizedVis, 'Colorized');