California Water and Environmental  Modeling Forum

Promoting Excellence and Consensus in Water and Environmental Modeling

In coordination withCollegeLogos4

    The CWEMF presents

METRIC Evapotranspiration Workshop

Intensive 4-Day Hands-on Training on Applying METRIC (Mapping EvapoTranspiration at high Resolution with Internalized Calibration) for Computing and Mapping Evapotranspiration from Satellite Imagery

Tuesday-Wednesday-Thursday-Friday, August 23-26, 2016 from 8:30am to 4:00pm
Monday-Tuesday-Wednesday-Thursday, August 22-25 (Please Note the Change in Dates)
Plant and Environmental Sciences (PES) Room 1137
University of California Davis, Davis CA 95616
Directions and Parking

Workshop Fee: $1,000 for CWEMF members, $1,200 for non-members, and $1,000 for students
Registration through PayPal ™ (button below) is requested

Visitor Parking is $9.00 per day on the UC Davis campus

All Training will be on desktops. You will not be able to use laptops.

Deadline for priority registration is July 29, 2016 (seats are limited)

This METRIC workshop will provide intensive hands-on training designed for engineers and analysts who wish to learn how to apply the METRIC (Mapping EvapoTranspiration at high Resolution with Internalized Calibration) process. METRIC is a satellite-based energy balance approach for computing and mapping evapotranspiration at the field scale, and is generally applied using Landsat satellite imagery. 

Instructors: Dr. Rick Allen and Dr. Ricardo Trezza of the University of Idaho Kimberly Research and Extension Center and Dr. Ayse Kilic of the University of Nebraska-Lincoln will instruct the course.  Allen’s group developed METRIC over the past 15 years in partnership with Idaho Department of Water Resources and University of Nebraska.

Materials: METRIC application and training is done via Arc-Py and Python-GDAL coding, with some supplemental ERDAS Imagine Modelmaker coding.  Participants will be trained on programming and using Python environments and ERDAS Imagine, the theory and background behind METRIC, how to calibrate and apply METRIC in a proper, intelligent and accurate manner, and how to develop monthly and growing season estimates for ET.  Participants will be provided with a METRIC training manual and the Level 1 METRIC code.

Hardware: Each participant will have access to a desktop computing system. The desktops will be set up with all the necessary software including ERDAS Imagine, Python, Arc-Py and GDAL library. Laptops cannot be used for this workshop.

Prerequisites: Participants should be prepared for this course by having sufficient background in ET fundamentals and aerodynamic and radiation physics.  Basic image processing experience and remote sensing experience is useful but not essential.  A primer for the course that is highly recommended is: "An Introduction to Environmental Biophysics" by Gaylon S. Campbell and John M. Norman, available from Please read chapters 1-8, 10-11, and 14 of this book prior to the course, if you can. A Google search brings up a pdf of the book at:

More information about METRIC is available at:
 and -calibration/

Mosaic of METRIC ET of irrigated land in S Idaho for year 2000 (left) and close-up of METRIC ET image in Spain 2003

Workshop Registration

  1. Send an email to to reserve your spot.
  2. Select one of the registration options in the box, provide the participant’s name and contact information in the
    fields below and click the “Buy Now” button to be redirected to the PayPal web site for credit card payment.

  Electronic Registration and Payment (select one)

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    If PayPal won’t work for you, you may send a check to: CWEMF, P.O. Box 22529  Sacramento, CA 95822
    Or you can bring a check with you on August 22 made payable to “CWEMF”
    For more information, please email