Google Earth Engine ——MOD44W V6陆地/水面掩膜250米产品是使用用MODIS数据

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.

MOD44W V6陆地/水面掩膜250米产品是使用用MODIS数据训练的决策树分类器得出的，并通过MOD44W V5产品进行验证。一系列的掩膜被应用于解决由地形阴影、烧伤疤痕、云量或海洋中的冰盖造成的已知问题。

Dataset Availability

2000-01-01T00:00:00 - 2015-01-01T00:00:00

Dataset Provider

NASA LP DAAC at the USGS EROS Center

Collection Snippet

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

Resolution

250 meters

Bands Table

• Bit 0: Land-water mask
  • 0: Land
  • 1: Water

water_mask_QAQuality assurance (QA)water_mask_QA Bitmask

• 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)

使用说明：

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

数据引用：

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

LP DAAC - MOD44W

代码：

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: 0.0,
  max: 1.0,
  palette: ['bcba99', '2d0491'],
};
Map.setCenter(6.746, 46.529, 2);
Map.addLayer(waterMask, waterMaskVis, 'Water Mask');