Rapid Identification of Evapotranspiration Features Using Normalized Difference Latent Heat Index (NDLI)

Yuei An Liou, Le Mai Son

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Knowledge and understanding of evapotranspiration (ET) are crucial for a variety of water and energy balance applications. In the past decades, multiple ground observations and models have been used to evaluate the movement of water into atmosphere from different land cover types, while they cannot be conveniently implemented globally due to the former ones' limited spatial coverage and the later ones' complexity. In this study, we further examine the sensitivity of a newly developed remote sensing index, Normalized Difference Latent Heat Index (NDLI), on the potential ET against the other existing indexes in the literature. Results confirm that the newly developed multi-band NDLI exhibits the highest correlation with ET derived from the Surface Energy Balance Algorithm for Land (SEBAL) model as compared to the other indexes. The correlation coefficients are approximately 0.70 and 0.71 for the eastern part of Chiayi City, Taiwan and Thai Binh Province, Viet Nam, respectively.

Original languageEnglish
Title of host publication2019 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1915-1918
Number of pages4
ISBN (Electronic)9781538691540
DOIs
StatePublished - Jul 2019
Event39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019 - Yokohama, Japan
Duration: 28 Jul 20192 Aug 2019

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)

Conference

Conference39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019
Country/TerritoryJapan
CityYokohama
Period28/07/192/08/19

Keywords

  • evapotranspiration (ET)
  • NDLI
  • potential ET
  • SEBAL

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