Long-term Fluctuations, Modelling and Predictions of the Snow Accumulation and Ablation Process in Norikura Highland: Study Using an Energy Balance Analysis and Ablation Models

• NISHIMURA Motoshi

  Interdisciplinary Graduate School of Science and Technology, Shinshu University

• SASAKI Akihiko

  Faculty of Science, Shinshu University

• SUZUKI Keisuke

  Faculty of Science, Shinshu University

Bibliographic Information

Other Title

• 乗鞍高原における積雪融解プロセスの経年変動および再現と将来予測
• 乗鞍高原における積雪融解プロセスの経年変動および再現と将来予測 : 熱収支モデルと融解モデルを用いた検討
• ジョウクラ コウゲン ニ オケル セキセツ ユウカイ プロセス ノ ケイネン ヘンドウ オヨビ サイゲン ト ショウライ ヨソク : ネツ シュウシ モデル ト ユウカイ モデル オ モチイタ ケントウ
• ─熱収支モデルと融解モデルを用いた検討─

Abstract

 The effects of climate change on the snow cover and glaciers, such as an acceleration of their ablation in an alpine region (where these effects are more notable), have received increased attention in recent years. However, the meteorological observation network in the Japanese alpine region is relatively undeveloped, so snow accumulation and exhaustion processes as they relate to climate change in this region are not well understood. Therefore, meteorological observations were conducted in the region from November 2002 to October 2017 and an energy balance analysis for the snow cover periods of 2011/2012 to 2016/2017 was performed. In addition, regression models were applied to model the snowmelt process and simulate the sensitivity of the snowmelt rate to increased air temperature due to climate change. Fluctuations in annual mean air temperature, vapor pressure, and wind speed were not observed during the study period. Consequently, the adjusted ablation model was used to model the snowmelt process. The sensitivity of snowmelt to increased air temperature was evident and indicated the possibility that climate change would restrain snow accumulation and thus the amount of snowmelt. These results imply that it is necessary to discuss the effects of increasing snowmelt on the natural environment, and especially to consider the mechanism by which snowmelt occurs if climate change effects become explicit.

Journal

• Journal of Geography (Chigaku Zasshi)

  Journal of Geography (Chigaku Zasshi) 128 (1), 61-75, 2019-02-25

  Tokyo Geographical Society

Keywords

• snowmelt
• energy balance
• ablation model
• alpine region
• climate change

Details

• CRID: 1390282763122429696
• NII Article ID: 130007623220
• NII Book ID: AN00322536
• DOI: 10.5026/jgeography.128.61
• ISSN: 18840884
• ISSN: 0022135X
• NDL BIB ID: 029541692
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029541692
• Web Site: https://www.jstage.jst.go.jp/article/jgeography/128/1/128_128.61/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed