Für die globale Wassermaske werden die SWBD-Daten (SRTM Water Body Data) in Kombination mit MODIS-Daten mit einer räumlichen Auflösung von 250 m verwendet, um eine vollständige globale Karte von Oberflächengewässern mit einer räumlichen Auflösung von 250 m zu erstellen (circa 2000–2002). Dieses Dataset ist für die Verarbeitung von Rasterdaten und zum Ausblenden von Wasser in endgültigen Rasterdatenprodukten vorgesehen.
Bänder
Pixelgröße 250 Meter
Bänder
Name
Pixelgröße
Beschreibung
water_mask
Meter
Land-Wasser-Maske
Bitmaske für water_mask
Bit 0: Land-Wasser-Maske
0: Land
1: Wasser
water_mask_qa
Meter
Gibt an, aus welcher Datenquelle das Wasserpixel stammt.
Bitmaske für water_mask_qa
Bits 0–3: Land-Wasser-Maske HDF Science QA
1: SRTM Water Body Dataset (SWBD) – Wasser
2: MODIS-Treffer für Wasser bei 250 m
3: MODIS-Entscheidungsbaum für Wasser mit 250 m
4. Digitalisiertes Wasser
5: Mosaic of Antarctica (MOA) water
10: Digitalisiertes Land
Nutzungsbedingungen
Nutzungsbedingungen
Für MODIS-Daten und ‑Produkte, die über das LP DAAC bezogen werden, gelten keine Einschränkungen hinsichtlich der weiteren Verwendung, des Verkaufs oder der Weitergabe.
Für die globale Wassermaske werden die SWBD-Daten (SRTM Water Body Data) in Kombination mit MODIS-Daten mit einer räumlichen Auflösung von 250 m verwendet, um eine vollständige globale Karte von Oberflächengewässern mit einer räumlichen Auflösung von 250 m zu erstellen (circa 2000–2002). Dieses Dataset ist für die Verarbeitung von Rasterdaten und zum Ausblenden von Wasser in der endgültigen …
[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)"]]
