Parent Layer: 2022 ESPA

Name: p3940_202204_et.img

Display Field: Value

Type: Raster Layer

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Description: Evapotranspiration data developed using the METRIC (Mapping EvapoTranspiration at high Resolution with Internalized Calibration) model. METRIC is an image-processing model for computing ET data from satellite images. METRIC uses digital image data collected by Landsat or other remote sensing satellites measuring visible, near-infrared, and thermal infrared radiation. METRIC also incorporates USBR AgriMet weather data into the modeling process. Dr. Rick Allen, Dr. M. Tasumi, and Dr. R. Trezza, of the University of Idaho, developed METRIC by making refinements to the Surface Energy Balance Algorithm for Land (SEBAL).METRIC ET data in Idaho is primarily developed using Landsat 5, 7, 8 and 9 data. Most data are in the ERDAS Imagine file format. Filenames include the paths of the Landsat images used and the range of dates for seasonal ET data (e.g. p3940_20210401to20211031_et.img is Landsat paths 39 and 40, ET for the growing season 2021-04-01 to 2021-10-31). Monthly images show the month number (e.g. p3940_202104_et.img is for April of 2021). ET units are millimeters.

Service Item Id: 37ad0e71b49c45839dc515bf6944ad6a

Copyright Text: Idaho Department of Water Resources (IDWR).

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Supports Datum Transformation: true

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Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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