Set data ini berisi perkiraan luas permukaan lahan dalam kilometer persegi per piksel, tidak termasuk es dan air permanen, dalam setiap piksel, dan digunakan untuk menghitung set data kepadatan populasi GPW v4.11.
Gridded Population of World Version 4 (GPWv4), Revision 11 memodelkan distribusi populasi manusia global untuk tahun 2000, 2005, 2010, 2015, dan 2020 pada sel petak 30 detik busur (sekitar 1 km). Populasi didistribusikan ke sel menggunakan alokasi proporsional populasi dari sensus dan unit administratif. Data input populasi dikumpulkan pada resolusi spasial paling detail yang tersedia dari hasil sensus putaran 2010, yang dilakukan antara tahun 2005 dan 2014. Data input diekstrapolasi untuk menghasilkan estimasi populasi untuk setiap tahun yang dimodelkan.
Band
Ukuran Piksel 927,67 meter
Band
Nama
Min
Maks
Ukuran Piksel
Deskripsi
land_area
0*
0,86*
meter
Estimasi luas lahan dalam setiap piksel 30 detik busur.
Center for International Earth Science Information Network - CIESIN -
Columbia University. 2018. Gridded Population of the World, Versi 4
(GPWv4): Land Area, Revisi 11. Palisades, NY: NASA Socioeconomic Data
and Applications Center (SEDAC). https://doi.org/10.7927/H4Z60M4Z.
Diakses pada HARI BULAN TAHUN.
Set data ini berisi perkiraan luas permukaan lahan dalam kilometer persegi per piksel, tidak termasuk es dan air permanen, dalam setiap piksel, dan digunakan untuk menghitung set data kepadatan populasi GPW v4.11. Dokumentasi Umum Gridded Population of World Version 4 (GPWv4), Revision 11 memodelkan distribusi …
[null,null,[],[[["\u003cp\u003eThe Gridded Population of the World Version 4 (GPWv4), Revision 11 dataset models the distribution of global human population for the years 2000, 2005, 2010, 2015, and 2020.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset provides estimates of land area, excluding permanent ice and water, in square kilometers per pixel at a resolution of 927.67 meters.\u003c/p\u003e\n"],["\u003cp\u003ePopulation data is distributed to grid cells using proportional allocation from census and administrative units and extrapolated to produce estimates for each modeled year.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is provided by NASA SEDAC at the Center for International Earth Science Information Network and is licensed under CC-BY-4.0.\u003c/p\u003e\n"],["\u003cp\u003eThis land area dataset was specifically used to calculate the GPWv4 population density datasets.\u003c/p\u003e\n"]]],["The dataset, provided by NASA SEDAC, estimates land surface area per pixel (excluding permanent ice/water) from 2000 to 2020. It models global human population distribution using 30-arc-second grid cells. Data is extrapolated from census information collected between 2005-2014, with a pixel size of 927.67 meters. Users can access it via Earth Engine with the `ee.ImageCollection(\"CIESIN/GPWv411/GPW_Land_Area\")` snippet, under a CC-BY-4.0 license, and explore it using a provided JavaScript code.\n"],null,["# GPWv411: Land Area (Gridded Population of the World Version 4.11)\n\nDataset Availability\n: 2000-01-01T00:00:00Z--2020-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA SEDAC at the Center for International Earth Science Information Network](https://doi.org/10.7927/H4Z60M4Z)\n\nTags\n:\n[ciesin](/earth-engine/datasets/tags/ciesin) [gpw](/earth-engine/datasets/tags/gpw) [nasa](/earth-engine/datasets/tags/nasa) [population](/earth-engine/datasets/tags/population) \n\n#### Description\n\nThis dataset contains the estimate of the surface area of land\nin square kilometers per pixel, excluding permanent ice and water,\nwithin each pixel, and was used to calculate the GPW v4.11 population density\ndatasets.\n\n[General Documentation](https://beta.sedac.ciesin.columbia.edu/data/set/gpw-v4-quality-indicators/docs)\n\nThe Gridded Population of World Version 4 (GPWv4), Revision 11 models the distribution\nof global human population for the years 2000, 2005, 2010, 2015, and 2020\non 30 arc-second (approximately 1 km) grid cells. Population is distributed\nto cells using proportional allocation of population from census and\nadministrative units. Population input data are collected at the most\ndetailed spatial resolution available from the results of the 2010 round of\ncensuses, which occurred between 2005 and 2014. The input data are\nextrapolated to produce population estimates for each modeled year.\n\n### Bands\n\n\n**Pixel Size**\n\n927.67 meters\n\n**Bands**\n\n| Name | Min | Max | Pixel Size | Description |\n|-------------|-----|--------|------------|----------------------------------------------------------|\n| `land_area` | 0\\* | 0.86\\* | meters | Estimates for land area within each 30-arc second pixel. |\n\n\\* estimated min or max value\n\n### Terms of Use\n\n**Terms of Use**\n\n[CC-BY-4.0](https://spdx.org/licenses/CC-BY-4.0.html)\n\n### Citations\n\nCitations:\n\n- Center for International Earth Science Information Network - CIESIN -\n Columbia University. 2018. Gridded Population of the World, Version 4\n (GPWv4): Land Area, Revision 11. Palisades, NY: NASA Socioeconomic Data\n and Applications Center (SEDAC). \u003chttps://doi.org/10.7927/H4Z60M4Z\u003e.\n Accessed DAY MONTH YEAR.\n\n### DOIs\n\n- \u003chttps://doi.org/10.7927/H4Z60M4Z\u003e\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.ImageCollection('CIESIN/GPWv411/GPW_Land_Area');\nvar raster = dataset.select('land_area');\nvar raster_vis = {\n 'min': 0.0,\n 'palette': [\n 'ecefb7',\n '745638'\n ],\n 'max': 0.86\n};\nMap.setCenter(26.4, 19.81, 1);\nMap.addLayer(raster, raster_vis, 'land_area');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/CIESIN/CIESIN_GPWv411_GPW_Land_Area) \n[GPWv411: Land Area (Gridded Population of the World Version 4.11)](/earth-engine/datasets/catalog/CIESIN_GPWv411_GPW_Land_Area) \nThis dataset contains the estimate of the surface area of land in square kilometers per pixel, excluding permanent ice and water, within each pixel, and was used to calculate the GPW v4.11 population density datasets. General Documentation The Gridded Population of World Version 4 (GPWv4), Revision 11 models the distribution ... \nCIESIN/GPWv411/GPW_Land_Area, ciesin,gpw,nasa,population \n2000-01-01T00:00:00Z/2020-01-01T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.7927/H4Z60M4Z](https://doi.org/https://doi.org/10.7927/H4Z60M4Z)\n- [https://doi.org/10.7927/H4Z60M4Z](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/CIESIN_GPWv411_GPW_Land_Area)"]]
