Comparative study on climate change impact on precipitation and floods in Asian river basins

DOI Web Site 被引用文献4件 参考文献11件
  • Iwami Yoichi
    International Center for Water Hazard and Risk Management (ICHARM), PWRI
  • Hasegawa Akira
    International Center for Water Hazard and Risk Management (ICHARM), PWRI
  • Miyamoto Mamoru
    International Center for Water Hazard and Risk Management (ICHARM), PWRI
  • Kudo Shun
    Hydraulic Engineering Research Group, PWRI
  • Yamazaki Yusuke
    International Center for Water Hazard and Risk Management (ICHARM), PWRI
  • Ushiyama Tomoki
    International Center for Water Hazard and Risk Management (ICHARM), PWRI
  • Koike Toshio
    International Center for Water Hazard and Risk Management (ICHARM), PWRI

書誌事項

公開日
2017
DOI
  • 10.3178/hrl.11.24
公開者
水文・水資源学会／日本地下水学会／日本水文科学会／陸水物理研究会

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説明

<p>As many water related disasters occur frequently around the world, proper assessment of future climate change impact on floods and droughts is essential. In this study, we focused on basin-scale climate change impact assessment as necessary information for studying adaptation measures on the basis of integrated water resources management. We used Meteorological Research Institute-Atmospheric General Circulation Model (MRI-AGCM) 3.2S (20km grid super high resolution model) and a series of simulation methods for climate change analysis. We conducted a comparative study on changes in precipitation, flood discharge and inundation in the future during the wet and dry seasons for five target river basins in the Asian monsoon area. We found that regional precipitation outputs from the high resolution model in this study were in good agreement in the point of tendency of their changes in wet and dry monsoon seasons with the regional precipitation analysis in the Fifth Assessment Report (AR5) of Working Group 1 (WG1) of the International Panel on Climate Change (IPCC, 2013). This study illustrated that the proposed methodology can make more detailed descriptions of climate change possible. The study also found the importance of basin-scale runoff and inundation analysis with downscaling especially for basins where floods occur for a short period, suggesting potential differences between flood change and precipitation change from General Circulation Model (GCM) outputs such as maximum 5-day precipitation index in a basin. As a result, this paper confirms the importance of basin-scale discharge and inundation analysis for climate change considering basin characteristics from the viewpoint of river management.</p>

収録刊行物

  • Hydrological Research Letters

    Hydrological Research Letters 11 (1), 24-30, 2017

    水文・水資源学会／日本地下水学会／日本水文科学会／陸水物理研究会

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