Le masque d'eau mondial utilise les données SWBD (SRTM Water Body Data) en combinaison avec les données MODIS 250 m pour créer une carte mondiale complète des eaux de surface à une résolution spatiale de 250 m, vers 2000-2002. Cet ensemble de données est destiné à être utilisé pour le traitement des données raster et pour masquer l'eau dans les produits de données raster finaux.
Bracelets
Taille des pixels 250 mètres
Bandes de fréquences
Nom
Taille des pixels
Description
water_mask
mètres
Masque terre-eau
Masque de bits pour water_mask
Bit 0 : masque terre-eau
0 : Terre
1 : Eau
water_mask_qa
mètres
Indique la source de données qui a fourni le pixel d'eau.
1 : Eau de l'ensemble de données SRTM Water Body (SWBD)
2 : MODIS 250m water-hits water
3 : Eau de l'arbre de décision MODIS 250 m
4: Eau numérisée
5 : Eau de la mosaïque de l'Antarctique (MOA)
10 : Terres numérisées
Conditions d'utilisation
Conditions d'utilisation
Les données et produits MODIS acquis via le LP DAAC ne sont soumis à aucune restriction concernant leur utilisation, leur vente ou leur redistribution ultérieures.
Citations
Citations :
Pour savoir comment citer les ensembles de données LP DAAC, consultez la page Citing Our Data (Citer nos données).
Le masque d'eau mondial utilise les données SWBD (SRTM Water Body Data) en combinaison avec les données MODIS 250 m pour créer une carte mondiale complète des eaux de surface à une résolution spatiale de 250 m, vers 2000-2002. Cet ensemble de données est destiné au traitement des données raster et au masquage de l'eau dans les …
[null,null,[],[[["\u003cp\u003eThe MODIS/MOD44W/MOD44W_005_2000_02_24 dataset provides a global water mask at 250m resolution, combining data from SRTM and MODIS to identify surface water.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset, covering circa 2000-2002, is primarily used for processing raster data and masking out water in final products.\u003c/p\u003e\n"],["\u003cp\u003eIt includes two bands: \u003ccode\u003ewater_mask\u003c/code\u003e (indicating land or water) and \u003ccode\u003ewater_mask_qa\u003c/code\u003e (specifying the water pixel's source).\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"],["\u003cp\u003eUsers can explore and analyze this dataset further using Google Earth Engine.\u003c/p\u003e\n"]]],[],null,["# MOD44W.005 Land Water Mask Derived From MODIS and SRTM\n\nDataset Availability\n: 2000-02-24T00:00:00Z--2000-02-24T00:00:00Z\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)\n\nTags\n:\n[geophysical](/earth-engine/datasets/tags/geophysical) [mod44w](/earth-engine/datasets/tags/mod44w) [modis](/earth-engine/datasets/tags/modis) [srtm](/earth-engine/datasets/tags/srtm) [surface-ground-water](/earth-engine/datasets/tags/surface-ground-water) [water-mask](/earth-engine/datasets/tags/water-mask) \n\n#### Description\n\nThe Global Water Mask uses the SWBD (SRTM Water Body\nData) in combination with MODIS 250m data to create a complete\nglobal map of surface water at 250m spatial resolution, circa 2000-2002. This\ndataset is intended for use in processing of raster data and for\nmasking out water in final raster data products.\n\n### Bands\n\n\n**Pixel Size**\n\n250 meters\n\n**Bands**\n\n| Name | Pixel Size | Description |\n|-----------------|------------|---------------------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `water_mask` | meters | Land-water mask |\n| Bitmask for water_mask - Bit 0: Land-water mask - 0: Land - 1: Water ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n| `water_mask_qa` | meters | Shows which data source provided the water pixel. |\n| Bitmask for water_mask_qa - Bits 0-3: Land-water mask HDF science QA - 1: SRTM water body dataset (SWBD) water - 2: MODIS 250m water-hits water - 3: MODIS 250m decision-tree water - 4: Digitized water - 5: Mosaic of Antarctica (MOA) water - 10: Digitized land ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n\n### Terms of Use\n\n**Terms of Use**\n\nMODIS data and products acquired through the LP DAAC\nhave no restrictions on subsequent use, sale, or redistribution.\n\n### Citations\n\nCitations:\n\n- Please visit [LP DAAC 'Citing Our Data' page](https://lpdaac.usgs.gov/citing_our_data)\n for information on citing LP DAAC datasets.\n\n### Explore with Earth Engine\n\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\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.Image('MODIS/MOD44W/MOD44W_005_2000_02_24');\nvar waterMask = dataset.select('water_mask');\nvar waterMaskVis = {\n min: 0.0,\n max: 1,\n};\nMap.setCenter(6.746, 46.529, 2);\nMap.addLayer(waterMask, waterMaskVis, 'Water Mask');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/MODIS/MODIS_MOD44W_MOD44W_005_2000_02_24) \n[MOD44W.005 Land Water Mask Derived From MODIS and SRTM](/earth-engine/datasets/catalog/MODIS_MOD44W_MOD44W_005_2000_02_24) \nThe Global Water Mask uses the SWBD (SRTM Water Body Data) in combination with MODIS 250m data to create a complete global map of surface water at 250m spatial resolution, circa 2000-2002. This dataset is intended for use in processing of raster data and for masking out water in final ... \nMODIS/MOD44W/MOD44W_005_2000_02_24, geophysical,mod44w,modis,srtm,surface-ground-water,water-mask \n2000-02-24T00:00:00Z/2000-02-24T00:00:00Z \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)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/MODIS_MOD44W_MOD44W_005_2000_02_24)"]]
