Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Computation of Actual Evapotranspiration using Drone-based Remotely Sensed Information: Preliminary Test for a Drought Index

드론 원격정보를 활용한 실제증발산량의 산정: 가뭄지수를 위한 사전테스트

  • 이근상 (전주비전대학교 지적토목학과) ;
  • 김성욱 (지아이 지반정보연구소) ;
  • 함세영 (부산대학교 지질환경과학과) ;
  • 이길하 (대구대학교 건설시스템공학과)
  • Received : 2016.08.17
  • Accepted : 2016.10.31
  • Published : 2016.12.31
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Abstract

Drought is a reoccurring worldwide natural hazard that affects not only food production but also economics, health, and infrastructure. Drought monitoring is usually performed with precipitation-based indices without consideration of the actual state and amount of the land surface properties. A drought index based on the actual evapotranspiration can overcome these shortcomings. The severity of a drought can be quantified by making a spatial map. The procedure for estimating actual evapotranspiration is costly and complicated, and requires land surface information. The possibility of utilizing drone-driven remotely sensed data for actual evapotranspiration estimation was analyzed in this study. A drone collected data was used to calculate the normalized difference vegetation index (NDVI) and soil-adjusted vegetation index (SAVI). The spatial resolution was 10 m with a grid of $404{\times}395$. The collected data were applied and parameterized to an actual evapotranspiration estimation. The result shows that drone-based data is useful for estimating actual evapotranspiration and the corresponding drought indices.

Keywords

References

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  1. Influence of Scaling in Drone-based Remotely Sensed Information on Actual Evapotranspiration Estimation vol.27, pp.2, 2018, https://doi.org/10.5322/JESI.2018.27.2.135