Globalna maska wody wykorzystuje dane SWBD (SRTM Water Body Data) w połączeniu z danymi MODIS o rozdzielczości 250 m, aby utworzyć kompletną globalną mapę wód powierzchniowych o rozdzielczości przestrzennej 250 m z lat 2000–2002. Ten zbiór danych jest przeznaczony do przetwarzania danych rastrowych i maskowania wody w końcowych produktach danych rastrowych.
Pasma
Rozmiar piksela 250 metrów
Pasma
Nazwa
Rozmiar piksela
Opis
water_mask
metry
Maska lądowo-wodna
Maska bitowa dla water_mask
Bit 0: maska lądu i wody
0: Ląd
1. Woda
water_mask_qa
metry
Wskazuje, które źródło danych dostarczyło piksel wody.
Bitmaska dla water_mask_qa
Bity 0–3: maska lądowo-wodna HDF science QA
1. SRTM water body dataset (SWBD) water
2: MODIS 250m water-hits water
3. MODIS 250m decision-tree water
4. Zdigitalizowana woda
5. Mosaic of Antarctica (MOA) water
10. Zdigitalizowany teren
Warunki korzystania z usługi
Warunki korzystania z usługi
Dane i produkty MODIS uzyskane za pośrednictwem LP DAAC nie podlegają ograniczeniom w zakresie dalszego wykorzystania, sprzedaży ani redystrybucji.
Global Water Mask wykorzystuje dane SWBD (SRTM Water Body Data) w połączeniu z danymi MODIS o rozdzielczości 250 m, aby utworzyć kompletną globalną mapę wód powierzchniowych o rozdzielczości przestrzennej 250 m z okresu 2000–2002. Ten zbiór danych jest przeznaczony do przetwarzania danych rastrowych i maskowania wody w końcowych …
[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)"]]
