Impact of the Resolution of GCM output on the Snow Water Equivalent Estimation

DOI

Bibliographic Information

Other Title
  • GCM出力の解像度が積雪水量推定に及ぼす影響

Abstract

Various kinds of GCM output are provided in the<br>SOUSEI program. Compared with 20km GCM, 60km GCM has many number of <br> ensemble members. Although 60km is relatively high resolution in GCMs, complex<br>topography in Japan region is not well represented. In snowy regions, basins<br>facing the Sea of Japan, water from snowmelt can be used as irrigation water.<br>As the evaluation of snow water amount is crucial for assessing the impact of<br>climate change on water resources, effect of the resolution of GCM output on<br>the snow water equivalent is investigated by the land surface model’s output<br>driven by original (20km) resolution and up-scaled (60km) resolution. Annual<br>maximum SWE ratio by 60km-scale analysis and 20km-scale analysis is explained<br>by winter season’s precipitation, standard deviation of sub-grid scale<br>elevation, and precipitation weighted average winter season’s temperature from <br> multiple regression analysis with determination coefficient of 0.92 for 300-600m<br>elevation zone.

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Details 詳細情報について

  • CRID
    1390001205711710208
  • NII Article ID
    130005491869
  • DOI
    10.11520/jshwr.28.0_100030
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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