Das Dataset „CPC Unified Gauge-Based Analysis of Global Daily Precipitation“ bietet tägliche Schätzungen der Niederschläge über Land von 1979 bis heute.
Die von NOAA's Climate Prediction Center (CPC) entwickelte Methode nutzt eine optimale Interpolationstechnik, um Daten aus einem globalen Netzwerk von Regenmessgeräten zu kombinieren. Über 30.000 Messgeräte tragen zur retrospektiven Version (1979–2005) und etwa 17.000 zur Echtzeitversion (2006 bis heute) bei.
Die Daten werden mit einer Auflösung von 0,5 Grad bereitgestellt und enthalten sowohl Niederschlagsmengen (in 0,1 mm) als auch die Anzahl der für jede Gitterzelle verwendeten Messgeräte, sodass Nutzer die Datenqualität bewerten können.
Die Qualität des Datasets ist in tropischen Gebieten Afrikas und in der Antarktis schlecht und variiert im Allgemeinen mit der Dichte der Messgeräte. Echtzeitdaten können überarbeitet werden, sobald vollständigere Stationsdaten verfügbar sind.
Dieser Ordner enthält die gesamte technische Dokumentation.
HINWEIS: Die Verlaufsdaten von 1979 bis 2005 sind in der aktuellen Version des Datasets nicht verfügbar.
Bänder
Pixelgröße 55.500 Meter
Bänder
Name
Einheiten
Min.
Max.
Pixelgröße
Beschreibung
precipitation
mm
0*
10671,5*
Meter
Geschätzte tägliche Gesamtniederschlagsmenge in 0,1 mm
num_gauges
0*
121*
Meter
Anzahl der Regenmesser, die zur Niederschlagsmenge in der 0,5-Grad-Gitterzelle beitragen
* geschätzter Mindest- oder Höchstwert
Nutzungsbedingungen
Nutzungsbedingungen
Die NOAA CPC-Datasets können ohne Einschränkungen verwendet oder weitergegeben werden. NOAA PSL bittet darum, dass der Nutzer die Quelle der Daten, NOAA PSL, gegebenenfalls richtig angibt.
Zitate
Zitate:
(Interpolationsalgorithmus) Xie_et_al_2007_JHM_EAG.pdf Xie,
P., A. Yatagai, M. Chen, T. Hayasaka, Y. Fukushima, C. Liu und S. Yang (2007), A gauge-based analysis of daily precipitation over East
Asia, J. Hydrometeorol., 8.607. 626.
(Gauge Algorithm Evaluation) Chen_et_al_2008_JGR_Gauge_Algo.pdf
Chen, M., W. Shi, P. Xie, V. B. S. Silva, V. E. Kousky, R. Wayne Higgins und J. E. Janowiak (2008), Assessing objective techniques for
gauge-based analyses of global daily precipitation,
J. Geophys. Gel., 113, D04110,
doi:10.1029/2007JD009132
Das Dataset „CPC Unified Gauge-Based Analysis of Global Daily Precipitation“ bietet tägliche Schätzungen der Niederschläge über Land von 1979 bis heute. Sie wurde vom Climate Prediction Center (CPC) der NOAA entwickelt und nutzt eine optimale Interpolationstechnik, um Daten aus einem globalen Netzwerk von Regenmessern zu kombinieren. Über 30.000 Messgeräte tragen zu … bei.
[null,null,[],[[["\u003cp\u003eThe NOAA/CPC/Precipitation dataset provides daily precipitation estimates over global land areas from 1979 to present, using a gauge-based analysis.\u003c/p\u003e\n"],["\u003cp\u003eData is available at a 0.5-degree resolution and includes both precipitation amounts (in 0.1 mm) and the number of gauges used for each grid cell.\u003c/p\u003e\n"],["\u003cp\u003eWhile data quality is generally good, it's noted to be poor over tropical Africa and Antarctica, and real-time data (from 2006 onward) is subject to revision.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is freely available for use and distribution with proper attribution to NOAA PSL.\u003c/p\u003e\n"],["\u003cp\u003eHistorical data from 1979 to 2005 is not included in the current version available through Earth Engine.\u003c/p\u003e\n"]]],[],null,["Dataset Availability\n: 2006-01-01T00:00:00Z--2025-09-04T00:00:00Z\n\nDataset Provider\n:\n\n\n [NOAA Physical Sciences Laboratory](https://psl.noaa.gov/data/gridded/data.cpc.globalprecip.html)\n\nTags\n:\n[daily](/earth-engine/datasets/tags/daily) [noaa](/earth-engine/datasets/tags/noaa) [precipitation](/earth-engine/datasets/tags/precipitation) [weather](/earth-engine/datasets/tags/weather) \n\nDescription \nThe CPC Unified Gauge-Based Analysis of Global Daily Precipitation dataset\noffers daily precipitation estimates over land from 1979 to the present.\nDeveloped by NOAA's Climate Prediction Center (CPC), it leverages an optimal\ninterpolation technique to combine data from a global network of rain\ngauges, with over 30,000 gauges contributing to the retrospective version\n(1979-2005) and around 17,000 to the real-time version (2006-present).\nData is provided at a 0.5-degree resolution and includes both precipitation\namounts (in 0.1 mm) and the number of gauges used for each grid cell,\nallowing users to assess data quality.\n\nThe dataset's quality is acknowledged to be poor over tropical Africa and\nAntarctica, and generally varies with gauge density. Real-time data is\nsubject to revision as more complete station data becomes available.\n\n[This](https://ftp.cpc.ncep.noaa.gov/precip/CPC_UNI_PRCP/GAUGE_GLB/DOCU/)\nfolder has all the technical documentation.\n\nNOTE: The historical data spanning from 1979 to 2005 is not available in the\ncurrent version of the dataset.\n\nBands\n\n\n**Pixel Size**\n\n55500 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|-----------------|-------|-----|-----------|------------|--------------------------------------------------------------------------------------------------|\n| `precipitation` | mm | 0\\* | 10671.5\\* | meters | Daily total precipitation estimate in 0.1 mm |\n| `num_gauges` | | 0\\* | 121\\* | meters | Number of rain gauges contributing to the precipitation estimate within the 0.5-degree grid cell |\n\n\\* estimated min or max value\n\nTerms of Use\n\n**Terms of Use**\n\nThe NOAA CPC datasets are available without restriction\non use or distribution. NOAA PSL does request that the\nuser give proper attribution and identify NOAA PSL, where applicable,\nas the source of the data.\n\nCitations \nCitations:\n\n- (Interpolation algorithm) Xie_et_al_2007_JHM_EAG.pdf Xie,\n P., A. Yatagai, M. Chen, T. Hayasaka, Y. Fukushima, C. Liu, and\n S. Yang (2007), A gauge-based analysis of daily precipitation over East\n Asia, J. Hydrometeorol., 8, 607. 626.\n- (Gauge Algorithm Evaluation) Chen_et_al_2008_JGR_Gauge_Algo.pdf\n Chen, M., W. Shi, P. Xie, V. B. S. Silva, V E. Kousky, R. Wayne Higgins,\n and J. E. Janowiak (2008), Assessing objective techniques for\n gauge-based analyses of global daily precipitation,\n J. Geophys. Res., 113, D04110,\n [doi:10.1029/2007JD009132](https://doi.org/10.1029/2007JD009132)\n\nDOIs\n\n- \u003chttps://doi.org/10.1029/2007JD009132\u003e\n\nExplore with Earth Engine **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\nCode Editor (JavaScript) \n\n```javascript\nvar dataset = ee.ImageCollection('NOAA/CPC/Precipitation')\n .filter(ee.Filter.date('2018-01-01', '2019-01-01'));\nvar precipitation = dataset.select('precipitation');\nvar precipitationVis = {\n min: 0,\n max: 150,\n palette: ['#ADD8E6', '#008000', '#FFFF00', '#FFA500', '#FF0000', '#800080'],\n};\nMap.setCenter(-68.36, -6.73, 3);\nMap.addLayer(precipitation, precipitationVis, 'NOAA CPC Precipitation');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NOAA/NOAA_CPC_Precipitation) \n[CPC Global Unified Gauge-Based Analysis of Daily Precipitation](/earth-engine/datasets/catalog/NOAA_CPC_Precipitation) \nThe CPC Unified Gauge-Based Analysis of Global Daily Precipitation dataset offers daily precipitation estimates over land from 1979 to the present. Developed by NOAA's Climate Prediction Center (CPC), it leverages an optimal interpolation technique to combine data from a global network of rain gauges, with over 30,000 gauges contributing to ... \nNOAA/CPC/Precipitation, daily,noaa,precipitation,weather \n2006-01-01T00:00:00Z/2025-09-04T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.1029/2007JD009132](https://doi.org/https://psl.noaa.gov/data/gridded/data.cpc.globalprecip.html)\n- [https://doi.org/10.1029/2007JD009132](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NOAA_CPC_Precipitation)"]]
