Estimation of the Global distribution of sub-grid snow-cover ratio using a high resolution satellite data and its evaluation by a land surface model.

• Project/Area Number: 19612004
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: 地球システム変動
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: TAKATA Kumiko Japan Agency for Marine-Earth Science and Technology, 地球環境変動領域, 主任研究員 (60270906)
• Research Collaborator: GLEN E.Liston Colorado State University, Cooperative Institute for Research in the Atmosphere, Senior Research Scientist ; HIRABAYASHI Yukiko 国立大学法人東京大学, 大学院・工学研究科, 准教授 (60377588) ; O'ISHI Ryota 国立大学法人東京大学, 大気海洋研究所, 博士研究員 (90436600) ; SUEYOSHI Tetsuo 独立行政法人海洋研究開発機構, 地球環境変動領域, 技術研究副主任
• Project Period (FY): 2007 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2007: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 陸面水文過程モデル / 積雪被覆率 / 全球規模気候変動 / 陸面過程モデリング / 積雪分布 / 衛星観測データ / 気候変動 / 全球気候変動 / 衛星データ / 全球気候モデル

Research Abstract

The global distribution of sub-grid snow cover ratio was estimated using two satellite observation data in visible radiation band : EASE-Grid data which covered long term period but limited for a medium resolution, and MODIS data which was limited to the recent years but enabled for a high resolution. In a land surface model for climate studies, MATSIRO, snow cover ratio had been estimated by a simple function of snow water equivalent. That was replaced by a scheme of snow cover ratio (SSNOWD) where the physics of the sub-grid distribution of snow cover was considered. It resulted in the significant reductions in negative biases in accumulation season and in positive biases in eastern Siberia.

Research Products

• [Journal Article] Evaluation of forest snow processes models (SnowMIP2) (2009)
  • Author(s): Rutter, N., Y. Hirabayashi(21番目), K.Takata(44番目),ほか50人
  • Journal Title: Journal of Geophysical Research (Atmosphere) 114
  • Peer Reviewed
• [Journal Article] Evaluation of forest snow processes models (SnowMIP2) (2009)
  • Author(s): Rutter, N., R. Essery, J. Pomeroy, N. Altimir, K. Andreadis, I. Baker, A. Barr, P. Bartlett, A. Boone, H. Deng, H Douville, E. Dutra, K. Elder, C. Ellis, X. Feng, A. Gelfan, A. Goodbody, Y. Gusev, D. Gustafsson, R. Hellstroml, Y. Hirabayashi, T. Hirota, T. Jonas, V. Koren, A. Kuragina, D. Lettenmaier, LeW.-P. Li, C. Luce, E. Martin, O. Nasonova, J. Pumpanen, R. D. Pyles, P. Samuelsson, M. Sandells, G. Schadler, A. Shmakin, T. G. Smirnova, M. Stahli, R. Stockli, U. Strasser, H. Su, K. Suzuki, K. Takata, K. Tanaka, E. Thompson, T. Vesala, P. Viterbo, A. Wiltshire, K. Xia, Y. Xue, T. Yamazaki
  • Journal Title: Journal of Geophysical Research (Atmosphere) 114
  • Peer Reviewed
• [Journal Article] Evaluation of forest snow processes models(SnowMIP2) (2009)
  • Author(s): Nick Rutter
  • Journal Title: Journal of Geophysical Research(Atmosphere) 114
  • Peer Reviewed
• [Presentation] サブグリッド積雪被覆スキームの導入による大気大循環モデルMIROC5に対する影響 (2010)
  • Author(s): 大石龍太, 他2名
  • Organizer: 日本気象学会2010年秋季大会
  • Place of Presentation: 仙台。
  • Year and Date: 2010-10-29
• [Presentation] サブグリッド積雪被覆スキームの導入による大気大循環モデルMIROC5に対する影響 (2010)
  • Author(s): 大石龍太
  • Organizer: 日本気象学会2010年秋季大会
  • Place of Presentation: 京都テルサ
  • Year and Date: 2010-10-29
• [Presentation] Improvement of a scheme of sub-grid snow cover fraction in a global climate model, International Symposium on Snow (2010)
  • Author(s): 高田久美子, et al.
  • Organizer: Ice and Humanity in a Changing Climate
  • Place of Presentation: Sapporo.
  • Year and Date: 2010-07-24
• [Presentation] Improvement of a scheme of sub-grid snow cover fraction in a global climate model. (2010)
  • Author(s): Kumiko TAKATA
  • Organizer: International Symposium on Snow, Ice and Humanity in a Changing Climate(International Glaciologocal Society)
  • Place of Presentation: 北海道大学
  • Year and Date: 2010-06-24
• [Presentation] 全球気候モデルにおける積雪サブグリッド被覆率スキームの改良 (2009)
  • Author(s): 高田久美子, 他2名
  • Organizer: 日本気象学会2009年春季大会
  • Place of Presentation: つくば。
  • Year and Date: 2009-05-31
• [Presentation] 全球気候モデルにおける積雪サブグリッド被覆率スキームの改良 (2009)
  • Author(s): 高田久美子
  • Organizer: 日本気象学会2009年春季大会
  • Place of Presentation: つくば (国際会議場)
  • Year and Date: 2009-05-31
• [Presentation] 気候モデルにおける積雪サブグリッド被覆率スキームの改良 (2008)
  • Author(s): 高田久美子, 他2名
  • Organizer: 雪氷研究大会(2008・東京)
  • Place of Presentation: 東京。
  • Year and Date: 2008-09-24
• [Presentation] 気候モデルにおける積雪サブグリッド被覆率スキームの改良 (2008)
  • Author(s): 高田久美子
  • Organizer: 雪氷研究大会 (2008年・東京)
  • Place of Presentation: 東京大学
  • Year and Date: 2008-09-24