Numerical modeling studies on the long-term climate variability aimed at detecting anthropogenic signals on the climate change

• Project/Area Number: 18310016
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: National Institute for Environmental Studies
• Principal Investigator: NOZAWA Toru National Institute for Environmental Studies, 大気圏環境研究領域, 室長 (10311325)
• Co-Investigator(Kenkyū-buntansha): NAGASHIMA Tatsuya 独立行政法人国立環境研究所, アジア自然共生研究グループ, 研究員 (50391131) ; SHIOGAMA Hideo 独立行政法人国立環境研究所, 地球環境研究センター, NIESポスドクフェロー (30391113)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥18,040,000 (Direct Cost: ¥15,700,000、Indirect Cost: ¥2,340,000); Fiscal Year 2008: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2007: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000); Fiscal Year 2006: ¥7,900,000 (Direct Cost: ¥7,900,000)
• Keywords: 気候変動 / 統計数学 / 温暖化要因推定

Research Abstract

人間活動に伴う気候変化シグナルの検出に資するために、長期内部変動である気候の揺らぎに対して外的な気候変動要因が及ぼす影響について調べた。温室効果ガスの増加など人為的な気候変動要因のみ考慮した場合や、太陽変動など自然的な気候変動要因のみ考慮した場合など、仮想的な数値シミュレーション結果を統計的に比較解析した結果、気候の揺らぎは外的な気候変動要因による著しい変調を受けないと考えられることが示唆された。

Research Products

• [Journal Article] The influence of volcanic activity and changes in solar irradiance on surface air temperatures in the early twentieth century (2006)
  • Author(s): Shiogama, H., T. Nagashima, T, Yokohata, S.A. Crooks, and T. Nozawa
  • Journal Title: CGER'S SUPERCOMPUTER ACTIVITY REPORT 14 Pages: 25-31
• [Journal Article] The influence of volcanic activity and changes in solar irradiance on surface air temperatures in the early twentieth century (2006)
  • Author(s): Hideo Shiogama et al.
  • Journal Title: OGER'S SUPERCOMPUTER ACTIVITY REPORT 14 Pages: 25-31
• [Presentation] Primary results of aerosols impact on precipitation change (2009)
  • Author(s): Nozawa, et al.
  • Organizer: Spring Meeting of the International ad hoc Detection and Attribution Group 2009
  • Place of Presentation: Boulder, USA
  • Year and Date: 2009-01-21
• [Presentation] Primary Results of Aerosols Impact on Precipitation Change (2009)
  • Author(s): Nozawa, et al.
  • Organizer: Spring Meeting of the International ad hoc Detection and Attribution Group 2009
  • Place of Presentation: Boulder, USA
  • Year and Date: 2009-01-21
• [Presentation] Additivity of temperature responses in the global and continental scales (2008)
  • Author(s): Shiogama, et al.
  • Organizer: Spring Meeting of the International ad hoc Detection and Attribution Group 2008
  • Place of Presentation: Boulder, USA
  • Year and Date: 2008-01-29
• [Presentation] Additivity of temperature responses in the global and continental scales (2008)
  • Author(s): Shiogama, et. al.
  • Organizer: Spring Meeting of the International ad hoc Detectiong and Attribution Group 2008
  • Place of Presentation: Boulder,USA
  • Year and Date: 2008-01-29