Impact of climate change on hydrological processes over a basin scale in Northern Taiwan

Pao-Shan Yu, Yu Chi Wang

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

This study investigates the impact of climate change on rainfall, evapotranspiration, and discharge in northern Taiwan. The upstream catchment of the Shihmen reservoir in northern Taiwan was chosen as the study area. Both observed discharge and soil moisture were simultaneously adopted to optimize the HBV-based hydrological model, clearly improving the simulation of the soil moisture. The delta change of monthly temperature and precipitation from the grid cell of GCMs (General Circulation Models) that is closest to the study area were utilized to generate the daily rainfall and temperature series based on a weather generating model. The daily rainfall and temperature series were further inputted into the calibrated hydrological model to project the hydrological variables. The studies show that rainfall and discharge will be increased during the wet season (May to October) and decreased during the dry season (November to April of the following year). Evapotranspiration will be increased in the whole year except in November and December.

Original languageEnglish
Pages (from-to)3556-3568
Number of pages13
JournalHydrological Processes
Volume23
Issue number25
DOIs
Publication statusPublished - 2009 Dec 1

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rainfall
climate change
basin
evapotranspiration
soil moisture
temperature
wet season
general circulation model
dry season
catchment
weather
simulation
project

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

Cite this

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abstract = "This study investigates the impact of climate change on rainfall, evapotranspiration, and discharge in northern Taiwan. The upstream catchment of the Shihmen reservoir in northern Taiwan was chosen as the study area. Both observed discharge and soil moisture were simultaneously adopted to optimize the HBV-based hydrological model, clearly improving the simulation of the soil moisture. The delta change of monthly temperature and precipitation from the grid cell of GCMs (General Circulation Models) that is closest to the study area were utilized to generate the daily rainfall and temperature series based on a weather generating model. The daily rainfall and temperature series were further inputted into the calibrated hydrological model to project the hydrological variables. The studies show that rainfall and discharge will be increased during the wet season (May to October) and decreased during the dry season (November to April of the following year). Evapotranspiration will be increased in the whole year except in November and December.",
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Impact of climate change on hydrological processes over a basin scale in Northern Taiwan. / Yu, Pao-Shan; Wang, Yu Chi.

In: Hydrological Processes, Vol. 23, No. 25, 01.12.2009, p. 3556-3568.

Research output: Contribution to journalArticle

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