Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
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The Effect of Climate Change on Water Quality Analysis in a Dam River Basin

기후변화시나리오에 따른 댐유역의 장기 수질변화 예측

  • Jung, Je Ho (School of Archi. & Civil Engineering, Kyungpook National Univ.) ;
  • Kim, Dong Il (School of Archi. & Civil Engineering, Kyungpook National Univ.) ;
  • Choi, Hyun Gu (National Institute of Environmental Research) ;
  • Han, Kun Yeun (School of Archi. & Civil Engineering, Kyungpook National Univ.)
  • 정제호 (경북대학교 건축.토목공학부) ;
  • 김동일 (경북대학교 건축.토목공학부) ;
  • 최현구 (국립환경과학원) ;
  • 한건연 (경북대학교 건축.토목공학부)
  • Received : 2010.11.18
  • Accepted : 2011.02.14
  • Published : 2011.04.30
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Abstract

To assess the impact of climate change on water quality in an impounded river basin, this study estimated future air temperature and rainfall in the years of 2020, 2050 and 2080 by statistically downscaling the simulation results from two GCM models combined with two emission scenarios (A2 and B1). Both scenarios were selected from the Special Report on Emission Scenarios (SRES) suggested by IPCC. The A2 scenario represents an extreme condition whereas the B1 scenario represents a clean and energy efficient condition which is similar to that of study basin. With the results of estimated climate factors and land use data, the discharge and the concentrations of BOD, TN and TP in the Andong dam basins were simulated using the SWAT model. The change in BOD concentration for the B1 emission scenario was greater than the A2 scenario in the annual increase range and the pollution level. The concentration of TN was decreased during March? June which is drought period and increased again afterward. In contrast to TN, the concentration of TP was generally decreased. The change in TP concentration was greater for the B1 scenario than the A2 scenario.

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References

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