Study on estimating the evapotranspiration cover coefficient for stream flow simulation through remote sensing techniques

Chih-Da Wu, Chichuan Cheng, Hannchung Lo, Yeongkeung Chen

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This study focuses on using remote sensing techniques to estimate the evapotranspiration cover coefficient (CV) which is an important parameter for stream flow. The objective is to derive more accurate stream flow from the estimated CV. The study area is located in the Dan-Shuei watershed in northern Taiwan. The processes include the land-use classification using hybrid classification and four Landsat-5 TM images; the CV estimations based on remote sensing and traditional approaches; comparison of stream flow simulation according to the above two CV values. The result indicated that the study area was classified into seven land-use types with 88.3% classification accuracy. The simulated stream flow using remote sensing approach could represent more accurate hydrological characteristics than a traditional approach. Obviously integrating remote sensing technique and the SEBAL model is a useful approach to estimate the CV. The CV parameter estimated by remote sensing technique did improve the accuracy of the stream flow simulation. Therefore, the results can be extended to further studies such as forest water management.

Original languageEnglish
Pages (from-to)225-232
Number of pages8
JournalInternational Journal of Applied Earth Observation and Geoinformation
Volume12
Issue number4
DOIs
Publication statusPublished - 2010 Jan 1

Fingerprint

Stream flow
Evapotranspiration
Flow simulation
streamflow
evapotranspiration
Remote sensing
remote sensing
simulation
Land use
Water management
Watersheds
Landsat
water management
watershed
land use

All Science Journal Classification (ASJC) codes

  • Global and Planetary Change
  • Earth-Surface Processes
  • Computers in Earth Sciences
  • Management, Monitoring, Policy and Law

Cite this

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Study on estimating the evapotranspiration cover coefficient for stream flow simulation through remote sensing techniques. / Wu, Chih-Da; Cheng, Chichuan; Lo, Hannchung; Chen, Yeongkeung.

In: International Journal of Applied Earth Observation and Geoinformation, Vol. 12, No. 4, 01.01.2010, p. 225-232.

Research output: Contribution to journalArticle

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