يقدّم الإصدار 11 من "تعداد السكان في العالم" (GPWv4) توزيعًا
للسكان في العالم خلال الأعوام 2000 و2005 و2010 و2015 و2020
في خلايا شبكية تبلغ مساحتها 30 ثانية قوسية (كيلومتر واحد تقريبًا). يتم توزيع السكان على الخلايا باستخدام التوزيع النسبي للسكان من التعداد السكاني والوحدات الإدارية. يتم جمع بيانات السكان المدخلة بأعلى دقة مكانية متاحة من نتائج جولة التعدادات لعام 2010 التي أُجريت بين عامَي 2005 و2014. يتم استقراء بيانات الإدخال لإنتاج تقديرات عدد السكان لكل سنة تم وضع نموذج لها.
النطاقات
حجم البكسل 927.67 متر
النطاقات
الاسم
الحد الأدنى
الحد الأقصى
حجم البكسل
الوصف
mean_administrative_unit_area
0*
767642*
أمتار
تعرض هذه السمة مساحة كمية تشير إلى حجم وحدات الإدخال بالكيلومترات المربّعة التي يتم منها استخلاص عدد السكان وشبكات الكثافة.
مركز شبكة معلومات علوم الأرض الدولية (CIESIN) في "جامعة كولومبيا" 2016. Gridded Population of the World, Version 4
(GPWv4): Mean Administrative Unit Area, Revision 11.
Palisades, NY: NASA Socioeconomic Data and Applications Center
(SEDAC). https://doi.org/10.7927/H42Z13KG.
تم الوصول إليه في DAY MONTH YEAR.
تحتوي مجموعة البيانات هذه على متوسط مساحة الوحدات المُدخَلة التي يتم إنشاء شبكات عدد السكان وكثافتهم منها. General documentation The Gridded Population of World Version 4 (GPWv4), Revision 11 models the distribution of global human population for the years 2000, 2005, 2010, 2015, and 2020 on 30 arc-second …
[null,null,[],[[["\u003cp\u003eThe Gridded Population of the World, Version 4 (GPWv4) dataset models the global human population distribution for the years 2000, 2005, 2010, 2015, and 2020.\u003c/p\u003e\n"],["\u003cp\u003ePopulation data is distributed to 30 arc-second grid cells using proportional allocation from census and administrative units, based on the 2010 round of censuses.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset provides the mean area of the input units used to create population count and density grids, offering insights into the spatial resolution of the population data.\u003c/p\u003e\n"],["\u003cp\u003eIt is provided by NASA SEDAC at the Center for International Earth Science Information Network and is available under the CC-BY-4.0 license.\u003c/p\u003e\n"]]],["The dataset, provided by NASA SEDAC, models global human population distribution from 2000 to 2020. It uses data from the Gridded Population of the World Version 4 (GPWv4), revision 11. The dataset includes the mean area of input units from which population count and density grids are created. Data is on 30 arc-second grids. It is accessible via Earth Engine, using the snippet `ee.ImageCollection(\"CIESIN/GPWv411/GPW_Mean_Administrative_Unit_Area\")`, with a CC-BY-4.0 license.\n"],null,["# GPWv411: Mean Administrative Unit 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/H42Z13KG)\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 mean area of the input unit(s) from which population count and density grids are created.\n\n[General documentation](https://sedac.ciesin.columbia.edu/data/set/gpw-v4-admin-unit-center-points-population-estimates-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| `mean_administrative_unit_area` | 0\\* | 767642\\* | meters | Displays a quantitative surface that indicates the size of the input units in square kilometers from which population count and density grids are derived. |\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. 2016. Gridded Population of the World, Version 4\n (GPWv4): Mean Administrative Unit Area, Revision 11.\n Palisades, NY: NASA Socioeconomic Data and Applications Center\n (SEDAC). \u003chttps://doi.org/10.7927/H42Z13KG\u003e.\n Accessed DAY MONTH YEAR.\n\n### DOIs\n\n- \u003chttps://doi.org/10.7927/H42Z13KG\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_Mean_Administrative_Unit_Area');\nvar raster = dataset.select('mean_administrative_unit_area');\nvar raster_vis = {\n 'min': 0.0,\n 'palette': [\n 'ffffff',\n '747474',\n '656565',\n '3c3c3c',\n '2f2f2f',\n '000000'\n ],\n 'max': 40000.0\n};\nMap.setCenter(-88.6, 26.4, 1);\nMap.addLayer(raster, raster_vis, 'mean_administrative_unit_area');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/CIESIN/CIESIN_GPWv411_GPW_Mean_Administrative_Unit_Area) \n[GPWv411: Mean Administrative Unit Area (Gridded Population of the World Version 4.11)](/earth-engine/datasets/catalog/CIESIN_GPWv411_GPW_Mean_Administrative_Unit_Area) \nThis dataset contains the mean area of the input unit(s) from which population count and density grids are created. General documentation The Gridded Population of World Version 4 (GPWv4), Revision 11 models the distribution of global human population for the years 2000, 2005, 2010, 2015, and 2020 on 30 arc-second ... \nCIESIN/GPWv411/GPW_Mean_Administrative_Unit_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/H42Z13KG](https://doi.org/https://doi.org/10.7927/H42Z13KG)\n- [https://doi.org/10.7927/H42Z13KG](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/CIESIN_GPWv411_GPW_Mean_Administrative_Unit_Area)"]]
