WAPOR Dekadal Reference Evapotranspiration 2.0

AI-generated Key Takeaways

• The FAO/WAPOR/2/L1_RET_D dataset provides dekadal (10-day) reference evapotranspiration (RET) data from 2009 to 2023.

• RET represents the evapotranspiration from a hypothetical reference crop, simulating a well-watered grass surface.

• Data is available at a resolution of 18924 meters and is provided by the Food and Agriculture Organization of the United Nations (FAO).

• The dataset is free to use for research, education, and nonprofit purposes under FAO's Open Data Licensing.

• Values represent the average daily reference evapotranspiration for each dekad in millimeters (mm).

Dataset Availability

2009-01-01T00:00:00Z–2023-03-11T00:00:00Z

Dataset Provider

FAO UN

Earth Engine Snippet

ee.ImageCollection("FAO/WAPOR/2/L1_RET_D")

Cadence

10 Days

Tags

agriculture fao wapor water water-vapor

Description

Reference 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.

Bands

Pixel Size
18924 meters

Bands

Name	Units	Scale	Pixel Size	Description
L1_RET_D	mm	0.1	meters	Reference Evapotranspiration (Dekadal) [mm]

Terms of Use

Terms of Use

The Food and Agriculture Organization of the United Nations (FAO) is mandated to collect, analyze, interpret, and disseminate information related to nutrition, food, and agriculture. In this regard, it publishes a number of databases on topics related to FAO's mandate, and encourages the use of them for scientific and research purposes. Consistent with the principles of openness and sharing envisioned under the Open Data Licensing For Statistical Databases, and consistent with the mandate of FAO, data from the Water Productivity Open Access Portal (WaPOR), as part of AQUASTAT - FAO's Global Information System on Water and Agriculture, is available free to the user community.

Citations

Citations:

• FAO 2018. WaPOR Database Methodology: Level 1. Remote Sensing for Water Productivity Technical Report: Methodology Series. Rome, FAO. 72 pages.

• FAO 2020. WaPOR V2 Database Methodology. Remote Sensing for Water Productivity Technical Report: Methodology Series. Rome, FAO.https://www.fao.org/3/ca9894en/CA9894EN.pdf

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Code Editor (JavaScript)

var coll = ee.ImageCollection('FAO/WAPOR/2/L1_RET_D');
var image = coll.first();
Map.setCenter(17.5, 20, 3);
Map.addLayer(image, {min: 0, max: 100});

Open in Code Editor

WAPOR Dekadal Reference Evapotranspiration 2.0

Reference 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.

FAO/WAPOR/2/L1_RET_D, agriculture,fao,wapor,water,water-vapor

2009-01-01T00:00:00Z/2023-03-11T00:00:00Z

-39.9953437 -30.15 40.0044643 65.13

Google Earth Engine

https://developers.google.com/earth-engine/datasets