20世紀の世界陸域水文量の長期変動

• 平林 由希子

  山梨大学大学院医学工学総合研究部

• 鼎 信次郎

  総合地球環境学研究所

• 沖 大幹

  東京大学大学院生産技術研究所

書誌事項

タイトル別名

• Long-term Variation of World Terrestrial Water Cycle in 20th Century

抄録

Long-term simulation of terrestrial water cycle is estimated using a Land Surface Model (LSM). There are no observations long enough to drive LSM except for monthly precipitation and monthly temperature; therefore daily atmospheric forcing which is indispensable to run the LSM is statistically and/or empirically constructed from monthly precipitation and monthly temperature. High correlations of annual runoff variations are obtained at many basins globally, however, the correlations of annual runoff are low in dry areas and cold regions. It was also showed that the model successfully replicated the annual snow covered area in North America and summer soil moisture in Mongolia. Flood and drought indices are then extracted from the estimated 100-year river discharge and compared with those extracted from available runoff observations at large basins. Results showed that the historical large drought and flood were well simulated in the model.

収録刊行物

• 水工学論文集

  水工学論文集 49 409-414, 2005

  公益社団法人 土木学会

キーワード

• Global
• LSM
• global water cycle
• flood and drought

詳細情報

• CRID: 1390282680147479168
• NII論文ID: 130003842152
• DOI: 10.2208/prohe.49.409
• ISSN: 18849172
• ISSN: 09167374
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可