MOD44W.006 Terra Land Water Mask Derived From MODIS and SRTM Yearly Global 250m

AI-generated Key Takeaways

• The MOD44W V6 product provides a 250m resolution land/water mask derived from MODIS and SRTM data, distinguishing between land and water.

• It utilizes a decision tree classifier and incorporates masks to mitigate issues caused by terrain, burn scars, clouds, and ice.

• The dataset spans from 2000-01-01 to 2015-01-01 and is available through NASA LP DAAC at the USGS EROS Center.

• It includes a 'water_mask' band indicating land or water and a 'water_mask_QA' band providing quality assurance information.

• MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.

Dataset Availability

2000-01-01T00:00:00Z–2015-01-01T00:00:00Z

Dataset Provider

NASA LP DAAC at the USGS EROS Center

Earth Engine Snippet

ee.ImageCollection("MODIS/006/MOD44W")

Cadence

1 Year

Tags

geophysical mod44w modis nasa srtm surface-ground-water usgs water-mask

Description

The MOD44W V6 land/water mask 250m product is derived using a decision tree classifier trained with MODIS data and validated with the MOD44W V5 product. A series of masks are applied to address known issues caused by terrain shadow, burn scars, cloudiness, or ice cover in oceans.

Bands

Pixel Size
250 meters

Bands

Name	Pixel Size	Description
water_mask	meters	Land-water mask
Bitmask for water_mask Bit 0: Land-water mask 0: Land 1: Water
water_mask_QA	meters	Quality assurance (QA)
Bitmask for water_mask_QA Bits 0-3: Quality assurance (QA) 1: High confidence observation 2: Lower confidence water, but MOD44W V5 is water 3: Lower confidence land 4: Ocean mask 5: Ocean mask, but no water detected 6: Burned area (MCD64A1) 7: Urban or impervious surface 8: No water detected, Version 5 MOD44W shows inland water 10: No data (outside of projected area)

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 for information on citing LP DAAC datasets.

DOIs

• https://doi.org/10.5067/MODIS/MOD44W.006

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Code Editor (JavaScript)

var dataset = ee.ImageCollection('MODIS/006/MOD44W')
                  .filter(ee.Filter.date('2015-01-01', '2015-05-01'));
var waterMask = dataset.select('water_mask');
var waterMaskVis = {
  min: 0,
  max: 1,
  palette: ['bcba99', '2d0491'],
};
Map.setCenter(6.746, 46.529, 2);
Map.addLayer(waterMask, waterMaskVis, 'Water Mask');

Open in Code Editor

MOD44W.006 Terra Land Water Mask Derived From MODIS and SRTM Yearly Global 250m

The MOD44W V6 land/water mask 250m product is derived using a decision tree classifier trained with MODIS data and validated with the MOD44W V5 product. A series of masks are applied to address known issues caused by terrain shadow, burn scars, cloudiness, or ice cover in oceans.

MODIS/006/MOD44W, geophysical,mod44w,modis,nasa,srtm,surface-ground-water,usgs,water-mask

2000-01-01T00:00:00Z/2015-01-01T00:00:00Z

-90 -180 90 180

Google Earth Engine

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

• https://doi.org/10.5067/MODIS/MOD44W.006
• https://doi.org/10.5067/MODIS/MOD44W.006