Comparative Analysis of two Remote Sensing Models Estimating Evapotranspiration of As'Suwaiq Region

Ahsan Ali, Yaseen Al-Mulla

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

3 Citations (Scopus)

Abstract

Oman is a hot, arid and highly water-stressed country. The less amount of rainfall, not exceeding 100 mm per annum, leads to the dire need of optimum water management practices. Evapotranspiration estimates plays an important role in water management practices. Traditional methods to estimate actual evapotranspiration (ETa) are dependent on climatological data providing only point-based outcomes. In this study, two remote sensing surface energy-based models namely Surface Energy Balance Algorithm for Land (SEBAL) and Mapping EvapoTranspiration at high Resolution with Internalized Calibration (METRIC) were applied to estimate ETa in the city of As'Suwaiq, Oman over a period of two years. Results shown that SEBAL model under estimating ETa especially, in the peak summer. Whereas strong correlation of METRIC model with Penman Monteith model with R2 value of 0.71 as compared to R2 value of 0.13 with SEBAL. The study concluded that METRIC model performed better than SEBAL in estimating ETa for As'Suwaiq region as it provided results with high spatial and temporal resolution.

Original languageEnglish
Title of host publication2020 Mediterranean and Middle-East Geoscience and Remote Sensing Symposium, M2GARSS 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages273-276
Number of pages4
ISBN (Electronic)9781728121901
DOIs
Publication statusPublished - Mar 2020
Externally publishedYes
Event2020 Mediterranean and Middle-East Geoscience and Remote Sensing Symposium, M2GARSS 2020 - Tunis, Tunisia
Duration: Mar 9 2020Mar 11 2020

Publication series

Name2020 Mediterranean and Middle-East Geoscience and Remote Sensing Symposium, M2GARSS 2020 - Proceedings

Conference

Conference2020 Mediterranean and Middle-East Geoscience and Remote Sensing Symposium, M2GARSS 2020
Country/TerritoryTunisia
CityTunis
Period3/9/203/11/20

Keywords

  • Evapotranspiration
  • Heat Flux
  • LANDSAT-8
  • Remote Sensing

ASJC Scopus subject areas

  • Management, Monitoring, Policy and Law
  • Instrumentation
  • Earth and Planetary Sciences (miscellaneous)
  • Atmospheric Science
  • Computers in Earth Sciences
  • Earth-Surface Processes
  • Aerospace Engineering
  • Global and Planetary Change

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