Global production and free access to Landsat-scale Evapotranspiration with EEFlux and eeMETRIC

Ayse Kilic, Richard Allen, Philip Blankenau, Peter Revelle, Doruk Ozturk, Justin Huntington

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

EEFlux (Earth Engine Evapotranspiration Flux) is a version of the METRIC (mapping evapotranspiration at high resolution with internal calibration) application that operates on the Google Earth Engine (EE). EEFlux has a web-based interface and provides free public access to transform Landsat images into 30 m spatial evapotranspiration (ET) data for terrestrial land areas around the globe. EE holds the entire Landsat archive to power EEFlux along with NLDAS/CFSV2 gridded weather data for estimating reference ET. EEFlux is a part of the upcoming OpenET platform (https://openetdata.org/) that has leveraged nonprofit funding to provide ET information to all of the lower 48 states for free, as a means to foster water exchange between agriculture, cities and environment (Melton et al., 2020). The METRIC version in OpenET is named eeMETRIC, and includes cloud detection and time integration of ET snapshots into monthly ET estimates. EEFlux and eeMETRIC employ METRIC's "mountain" algorithms for estimating aerodynamics and solar radiation in complex terrain. Calibration is automated and ET images are computed for download in seconds using EE's large computational capacity.

Original languageEnglish (US)
Title of host publication6th Decennial National Irrigation Symposium
PublisherAmerican Society of Agricultural and Biological Engineers
ISBN (Electronic)9781713839743
DOIs
StatePublished - 2020
Event6th Decennial National Irrigation Symposium 2020 - San Antonio, United States
Duration: Nov 30 2020Dec 4 2020

Publication series

Name6th Decennial National Irrigation Symposium

Conference

Conference6th Decennial National Irrigation Symposium 2020
Country/TerritoryUnited States
CitySan Antonio
Period11/30/2012/4/20

Keywords

  • EEFLUX
  • EeMETRIC
  • Energy balance
  • Evapotranspiration
  • Google earth engine
  • Landsat
  • METRIC

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Soil Science

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