L'evapotraspirazione di riferimento (ETR) è definita come l'evapotraspirazione di una coltura di riferimento ipotetica e simula il comportamento di una superficie erbosa ben irrigata. Il valore di ogni pixel rappresenta la media dell'evapotraspirazione
di riferimento giornaliera per quella specifica decade.
Bande
Dimensioni in pixel 18924 metri
Bande
Nome
Unità
Scala
Dimensioni dei pixel
Descrizione
L1_RET_D
mm
0,1
metri
Evapotraspirazione di riferimento (decadale) [mm]
Termini e condizioni d'uso
Termini e condizioni d'uso
L'Organizzazione delle Nazioni Unite per l'alimentazione e l'agricoltura (FAO) ha il mandato di raccogliere, analizzare, interpretare e diffondere informazioni relative a nutrizione, alimenti e agricoltura. A questo proposito, pubblica una serie di database su argomenti correlati al mandato della FAO e ne incoraggia l'utilizzo per scopi scientifici e di ricerca. In linea con i principi
di apertura e condivisione previsti dalla licenza per dati aperti per
database statistici e
in linea con il mandato della FAO, i dati del Water Productivity Open
Access Portal (WaPOR), nell'ambito
di AQUASTAT, il sistema
informativo globale della FAO su acqua e agricoltura, sono disponibili senza costi per la community di utenti.
Citazioni
Citazioni:
FAO 2018. WaPOR Database Methodology: Level 1. Telerilevamento per l'acqua
Report tecnico sulla produttività: serie di metodologie. Roma, FAO. 72 pagine.
FAO 2020. WaPOR V2 Database Methodology. Telerilevamento per l'acqua
Report tecnico sulla produttività: serie di metodologie. Roma, FAO.https://www.fao.org/3/ca9894en/CA9894EN.pdf
L'evapotraspirazione di riferimento (ETR) è definita come l'evapotraspirazione di una coltura di riferimento ipotetica e simula il comportamento di una superficie erbosa ben irrigata. Il valore di ogni pixel rappresenta la media dell'evapotraspirazione di riferimento giornaliera per quella specifica decade.
[null,null,[],[[["\u003cp\u003eThe FAO/WAPOR/2/L1_RET_D dataset provides dekadal (10-day) reference evapotranspiration (RET) data from 2009 to 2023.\u003c/p\u003e\n"],["\u003cp\u003eRET represents the evapotranspiration from a hypothetical reference crop, simulating a well-watered grass surface.\u003c/p\u003e\n"],["\u003cp\u003eData is available at a resolution of 18924 meters and is provided by the Food and Agriculture Organization of the United Nations (FAO).\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is free to use for research, education, and nonprofit purposes under FAO's Open Data Licensing.\u003c/p\u003e\n"],["\u003cp\u003eValues represent the average daily reference evapotranspiration for each dekad in millimeters (mm).\u003c/p\u003e\n"]]],["The FAO WaPOR database provides dekadal (10-day) reference evapotranspiration (RET) data from January 1, 2009, to March 11, 2023. This dataset, accessible via Google Earth Engine, simulates evapotranspiration from a well-watered grass surface. Each pixel represents the average daily RET for a dekad in millimeters. It's available for free use, emphasizing open data for research purposes. Users can access the data via the provided Earth Engine snippet, and the dataset's provided citation links.\n"],null,["# WAPOR Dekadal Reference Evapotranspiration 2.0\n\nDataset Availability\n: 2009-01-01T00:00:00Z--2023-03-11T00:00:00Z\n\nDataset Provider\n:\n\n\n [FAO UN](https://wapor.apps.fao.org/catalog/WAPOR_2/1/L1_RET_D)\n\nCadence\n: 10 Days\n\nTags\n:\n[agriculture](/earth-engine/datasets/tags/agriculture) [fao](/earth-engine/datasets/tags/fao) [wapor](/earth-engine/datasets/tags/wapor) [water](/earth-engine/datasets/tags/water) [water-vapor](/earth-engine/datasets/tags/water-vapor) \n\n#### Description\n\nReference evapotranspiration (RET) is defined as the evapotranspiration from a\nhypothetical reference crop and it simulates the behaviour of a well-watered\ngrass surface. The value of each pixel represents the average of the daily\nreference evapotranspiration for that specific dekad.\n\n### Bands\n\n\n**Pixel Size**\n\n18924 meters\n\n**Bands**\n\n| Name | Units | Scale | Pixel Size | Description |\n|------------|-------|-------|------------|-----------------------------------------------|\n| `L1_RET_D` | mm | 0.1 | meters | Reference Evapotranspiration (Dekadal) \\[mm\\] |\n\n### Terms of Use\n\n**Terms of Use**\n\nThe Food and Agriculture Organization of the United Nations (FAO) is\nmandated to collect, analyze, interpret, and disseminate information related\nto nutrition, food, and agriculture. In this regard, it publishes a number\nof databases on topics related to FAO's mandate, and encourages the use of\nthem for scientific and research purposes. Consistent with the principles\nof openness and sharing envisioned under the [Open Data Licensing For\nStatistical Databases](http://www.fao.org/3/ca7570en/ca7570en.pdf), and\nconsistent with the mandate of FAO, data from the [Water Productivity Open\nAccess Portal (WaPOR)](https://wapor.apps.fao.org/home/WAPOR_2/1), as part\nof [AQUASTAT](http://www.fao.org/aquastat/en/) - FAO's Global Information\nSystem on Water and Agriculture, is available free to the user community.\n\n### Citations\n\nCitations:\n\n- FAO 2018. WaPOR Database Methodology: Level 1. Remote Sensing for Water\n Productivity Technical Report: Methodology Series. Rome, FAO. 72 pages.\n- FAO 2020. WaPOR V2 Database Methodology. Remote Sensing for Water\n Productivity Technical Report: Methodology Series. Rome, FAO.\u003chttps://www.fao.org/3/ca9894en/CA9894EN.pdf\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 coll = ee.ImageCollection('FAO/WAPOR/2/L1_RET_D');\nvar image = coll.first();\nMap.setCenter(17.5, 20, 3);\nMap.addLayer(image, {min: 0, max: 100});\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/FAO/FAO_WAPOR_2_L1_RET_D) \n[WAPOR Dekadal Reference Evapotranspiration 2.0](/earth-engine/datasets/catalog/FAO_WAPOR_2_L1_RET_D) \nReference evapotranspiration (RET) is defined as the evapotranspiration from a hypothetical reference crop and it simulates the behaviour of a well-watered grass surface. The value of each pixel represents the average of the daily reference evapotranspiration for that specific dekad. \nFAO/WAPOR/2/L1_RET_D, agriculture,fao,wapor,water,water-vapor \n2009-01-01T00:00:00Z/2023-03-11T00:00:00Z \n-39.9953437 -30.15 40.0044643 65.13 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://wapor.apps.fao.org/catalog/WAPOR_2/1/L1_RET_D)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/FAO_WAPOR_2_L1_RET_D)"]]
