哥伦比亚大学国际地球科学信息网络中心 (CIESIN)。2018 年。Gridded Population of the World, Version 4
(GPWv4): Basic Characteristics, Revision 11. Palisades, NY: NASA Socioeconomic Data and
Applications Center (SEDAC). doi:10.7927/H46M34XX.
访问日期：DAY MONTH YEAR。
[null,null,[],[[["\u003cp\u003eThe Gridded Population of the World, Version 4 (GPWv4) dataset provides global population estimates by age and sex for the years 2000, 2005, 2010, 2015, and 2020.\u003c/p\u003e\n"],["\u003cp\u003ePopulation data is modeled on 30 arc-second (approximately 1km) grid cells, based on the 2010 round of national censuses.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset is provided by NASA SEDAC at the Center for International Earth Science Information Network and is available through Google Earth Engine.\u003c/p\u003e\n"],["\u003cp\u003eThe data is licensed under CC-BY-4.0 and requires attribution when used.\u003c/p\u003e\n"]]],["The dataset provides gridded population estimates from 2000 to 2020, updated every five years, sourced from NASA SEDAC. It models the global human population distribution per 30 arc-second (approximately 1km) grid cells, using data from the 2010 census round. Estimates are broken down by age and sex, with each cell's population ranging from 0 to 140852. Users can access the data via Earth Engine using `ee.ImageCollection(\"CIESIN/GPWv411/GPW_Basic_Demographic_Characteristics\")` and visualize it.\n"],null,["# GPWv411: Basic Demographic Characteristics (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/H46M34XX)\n\nCadence\n: 5 Years\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 population estimates, by age and sex, per\n30 arc-second grid cell consistent with national censuses and population\nregisters. There is one image for each modeled age and sex category based\non the 2010 round of Census.\n\n[General Documentation](https://sedac.ciesin.columbia.edu/data/set/gpw-v4-basic-demographic-characteristics-rev11/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| `basic_demographic_characteristics` | 0\\* | 140852\\* | meters | The estimated number of persons, by age and sex, per 30 arc-second grid cell. |\n\n\\* estimated min or max value\n\n### Image Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|-----------|--------|-----------------------------------------|\n| Sex | STRING | The sex of a population subgroup. |\n| Age_Group | STRING | The age range of a population subgroup. |\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): Basic Characteristics, Revision 11. Palisades, NY: NASA Socioeconomic Data and\n Applications Center (SEDAC). [doi:10.7927/H46M34XX](https://doi.org/10.7927/H46M34XX).\n Accessed DAY MONTH YEAR.\n\n### DOIs\n\n- \u003chttps://doi.org/10.7927/H46M34XX\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_Basic_Demographic_Characteristics').first();\nvar raster = dataset.select('basic_demographic_characteristics');\nvar raster_vis = {\n 'max': 1000.0,\n 'palette': [\n 'ffffe7',\n '86a192',\n '509791',\n '307296',\n '2c4484',\n '000066'\n ],\n 'min': 0.0\n};\nMap.setCenter(79.1, 19.81, 3);\nMap.addLayer(raster, raster_vis, 'basic_demographic_characteristics');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/CIESIN/CIESIN_GPWv411_GPW_Basic_Demographic_Characteristics) \n[GPWv411: Basic Demographic Characteristics (Gridded Population of the World Version 4.11)](/earth-engine/datasets/catalog/CIESIN_GPWv411_GPW_Basic_Demographic_Characteristics) \nThis dataset contains population estimates, by age and sex, per 30 arc-second grid cell consistent with national censuses and population registers. There is one image for each modeled age and sex category based on the 2010 round of Census. General Documentation The Gridded Population of World Version 4 (GPWv4), Revision ... \nCIESIN/GPWv411/GPW_Basic_Demographic_Characteristics, 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/H46M34XX](https://doi.org/https://doi.org/10.7927/H46M34XX)\n- [https://doi.org/10.7927/H46M34XX](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/CIESIN_GPWv411_GPW_Basic_Demographic_Characteristics)"]]
