An investigation of a shift of source area of Asian dust going toward Japan

• Project/Area Number: 24510017
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Chiba Institute of Technology
• Principal Investigator: MATSUSHIMA Dai 千葉工業大学, 工学部, 教授 (50250668)
• Co-Investigator(Kenkyū-buntansha): KIMURA Reiji 鳥取大学, 乾燥地研究センター, 准教授 (80315457)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 熱慣性 / 土壌水分 / 黄砂発生 / ダスト発生 / 地表面熱収支モデル / 黄砂 / 熱赤外 / 地表面熱収支 / モンゴル国 / ゴビ砂漠 / ツォグトオボー / ダスト発生臨界風速 / 表層土壌水分 / 植生指数

Outline of Final Research Achievements

The Area of where dust emission frequency was high was located the south of 45 degrees North in 1990s. The area shift to the north of 45 degrees in 2000s was found using surface meteorological observations and the back trajectry technique. Correlation between estimated values of thermal inertia retrieved from a heat budget model of the earth surface and observed values of subsurface soil moisture was improved by improving the model. It allowed that the accuracy of estimating soil moisture distribution in the dust emission areas.

Research Products

• [Journal Article] Application of a satellite-based aridity index in dust source regions of northeast Asia (2014)
  • Author(s): Reiji Kimura
  • Journal Title: Journal of Arid Environments Volume: 109 Pages: 31-38
  • DOI: 10.1016/j.jaridenv.2014.05.007
  • Peer Reviewed
• [Presentation] An approach to estimate spatial distribution of surface heat fluxes using satellite data and a heat budget model over a desert steppe (2015)
  • Author(s): 松島 大
  • Organizer: 日本農業気象学会2015年全国大会
  • Place of Presentation: 文部科学省研究交流センター（茨城県つくば市）
  • Year and Date: 2015-03-18
• [Presentation] Downscaling (2014)
  • Author(s): Dai Matsushima
  • Organizer: American Geophysical Union, Fall Meeting 2014
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2014-12-17
• [Presentation] An estimation of spatial distribution of surface soil moisture conditions by a thermal inertia method with an application to Govi Steppe
  • Author(s): Dai Matsushima, Reiji Kimura, Ysunori Kurosaki
  • Organizer: The 2013 International Workshop on Terrestrial Change in Mongolia
  • Place of Presentation: JAMSTEC Tokyo Ofiice, Tokyo
• [Presentation] 熱慣性を指標とする広域土壌水分条件の推定
  • Author(s): 松島 大・木村玲二・黒崎泰典
  • Organizer: 日本農業気象学会2014年全国大会
  • Place of Presentation: 北海道大学学術交流会館, 札幌
• [Presentation] A development of soil moisture products of AMSR2 with higher spatial resolution using combined satellite data and a surface heat budget model
  • Author(s): 松島 大
  • Organizer: 地球環境観測ミッション合同PIワークショップ
  • Place of Presentation: 東京・TKPお茶の水カンファレンスセンター