METRIC-GIS: An advanced energy balance model for computing crop evapotranspiration in a GIS environment

Authors

J. M. Ramírez-Cuesta, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Murcia, SpainFollow
R G. Allen, University of IdahoFollow
D. S. Intrigliolo, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Murcia, Spain
Ayse Kilic, University of Nebraska-LincolnFollow
Clarence W. Robison, University of IdahoFollow
Ricardo Trezza, University of Idaho Research and Extension Center, KimberlyFollow
C. Santos, IFAPA, Centro “Alameda del Obispo”
I. J. Lorite, IFAPA, Centro “Alameda del Obispo”

Document Type

Article

Date of this Version

2020

Citation

Published in Environmental Modelling and Software 131 (2020) 104770

doi:10.1016/j.envsoft.2020.104770

Comments

Copyright © 2020 Elsevier Ltd. Used by permission.

Abstract

A novel ArcGIS toolbox that applies the Mapping Evapotranspiration with Internalized Calibration model was developed and tested in a semi-arid environment. The tool, named METRIC-GIS, facilitates the pre-processing operations and the automatic identification of potential calibration and pixels review. The energy balance components obtained from METRIC-GIS were contrasted with those from the original METRIC version (R² = 1; RMSE = 0 W m^–2 or mm day^–1 for ET_c) Additionally, an irrigated scheme located at southern Spain was considered for assessing Kc variability in the maize fields with METRIC-GIS. The identified spatial variability was mainly due to differences in irrigation regimes, crop management practices, and planting and harvesting dates. This information is critical for developing irrigation advisory strategies that contribute to the area sustainability. The developed tool facilitates data input introduction and reduces computational time by up to 50%, providing a more user-friendly alternative to other existing platforms that use METRIC.