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Reproducing the climate variability of Chichi-jima and Haha-jima at Ogasawara (Bonin) Islands based on the analysis of meteorological data and old documents

Research Project

Project/Area Number 21H00630
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 04010:Geography-related
Research InstitutionTokyo Metropolitan University

Principal Investigator

MATSUYAMA Hiroshi  東京都立大学, 都市環境科学研究科, 教授 (50264586)

Co-Investigator(Kenkyū-buntansha) 菅野 洋光  国立研究開発法人農業・食品産業技術総合研究機構, 農業環境研究部門, 再雇用職員 (30355276)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Fiscal Year 2023: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2022: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Keywords気象データ / 古文書 / 小笠原諸島 / 父島,母島 / 気候変動 / 父島 / 母島
Outline of Research at the Start

父島では 1906 年から,大村というところで気象庁による気象観測が始まった.それ以前には大村から 3 km 離れた扇浦というところで気象観測が行なわれており,研究代表者は,扇浦における 19 世紀末以降の気象観測記録をデジタル化した.これを用いて 19 世紀末以降の父島の気候変動について明らかにする.扇浦と大村のデータを接続させるため,扇浦で 3 年間総合気象観測を行ない,各気象要素の回帰式を作成する.さらに,研究代表者は,一般には利用できない,返還後の父島・母島の気象データを入手済みである.これらと一般に公開されているデータを解析して,小笠原諸島の気候変動の地域差について明らかにする.

Outline of Final Research Achievements

(1) Using meteorological data at Ohgiura, Chichi-jima, we investigated the long-term variability of precipitation at Chichi-jima after the end of 19th century. Precipitation at Chichi-jima has been decreasing during the 20th century, however, precipitation at the end of 19th century showed smaller value as well.
(2) Meteorological observations before June 1906 at Chichi-jima was conducted at Ohgiura, which was about 3 km southeast of Ohmura where Chichi-jima Meteorological Observatory is currently located. To connect both data at Ohgiura and Ohmura, we have carried out meteorological observations at Ohgiura. Precipitation at Ohgiura is systematically larger than that at Ohmura.
(3) Using NOT-publicly available precipitation data at Haha-jima after 1973, along with open precipitation there, we investigated the long-term variability of precipitation at Haha-jima and Chichi-jima. During 1973-2022, both precipitation at Haha-jima and Chichi-jima show significant increasing trend (p < 0.05).

Academic Significance and Societal Importance of the Research Achievements

従来の研究では,20 世紀中の父島の降水量は第二次世界大戦を境に,戦後の方が少なくなってきたことが指摘されていた.しかしながら,本研究によって 19 世紀末も降水量が少ない時期であることが分かった.
降水量が単調減少なのか周期的変化なのかは,動物や植物の生態を考えるうえでも貴重な情報である.小笠原には動植物の固有種も多く,本研究はそういった分野にも貢献すると考えられる.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (16 results)

All 2024 2023 2022 2021 Other

All Journal Article (9 results) (of which Peer Reviewed: 5 results,  Open Access: 6 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 5 results) Remarks (1 results)

  • [Journal Article] Supplement to the Characteristics of Precipitation at Haha-jima, Ogasawara (Bonin) Islands2023

    • Author(s)
      松山 洋
    • Journal Title

      Journal of Geography (Chigaku Zasshi)

      Volume: 132 Issue: 6 Pages: 515-525

    • DOI

      10.5026/jgeography.132.515

    • ISSN
      0022-135X, 1884-0884
    • Year and Date
      2023-12-25
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characteristics of Precipitation at Haha-jima, Ogasawara (Bonin) Islands in Comparison with Those at Chichi-jima2023

    • Author(s)
      松山 洋
    • Journal Title

      Journal of Geography (Chigaku Zasshi)

      Volume: 132 Issue: 1 Pages: 17-31

    • DOI

      10.5026/jgeography.132.17

    • ISSN
      0022-135X, 1884-0884
    • Year and Date
      2023-02-25
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 小笠原の昔の気象のはなし2023

    • Author(s)
      松山 洋
    • Journal Title

      天気

      Volume: 70 Pages: 213-218

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Investigating the Effects of Drought on the Vegetation Activity Using Remote Sensing Data: A Case Study at Chichi-jima, Ogasawara (Bonin) Islands2022

    • Author(s)
      三好周斗・松山 洋
    • Journal Title

      Journal of Geography (Chigaku Zasshi)

      Volume: 131 Issue: 3 Pages: 365-380

    • DOI

      10.5026/jgeography.131.365

    • ISSN
      0022-135X, 1884-0884
    • Year and Date
      2022-06-25
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 母島 大関文庫を用いた父島の降水量の復元-Kanno & Matsuyama (2021) の舞台裏-2022

    • Author(s)
      松山 洋
    • Journal Title

      小笠原研究年報

      Volume: 45 Pages: 45-62

    • Related Report
      2022 Annual Research Report
    • Open Access
  • [Journal Article] 古文書を用いた気候変動の復元-小笠原諸島を事例に-2022

    • Author(s)
      松山 洋・菅野洋光
    • Journal Title

      ESTRELA

      Volume: 339 Pages: 10-15

    • Related Report
      2022 Annual Research Report
  • [Journal Article] The Influence of Tropical Cyclones on the Seasonal Variability of Precipitationon Chichi-jima in the Ogasawara (Bonin) Islands during El Ni&ntilde;o/La Ni&ntilde;a Events2021

    • Author(s)
      フローレス慈英・松山 洋
    • Journal Title

      Journal of Geography (Chigaku Zasshi)

      Volume: 130 Issue: 3 Pages: 353-368

    • DOI

      10.5026/jgeography.130.353

    • NAID

      130008066578

    • ISSN
      0022-135X, 1884-0884
    • Year and Date
      2021-06-25
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pre-1906 Extension of Precipitation Data for Chichi-Jima in the Ogasawara (Bonin) Islands Based on the Analysis of Historical Documents2021

    • Author(s)
      Kanno, H. and Matsuyama, H.
    • Journal Title

      SOLA

      Volume: 17 Issue: 0 Pages: 170-176

    • DOI

      10.2151/sola.2021-030

    • NAID

      130008101357

    • ISSN
      1349-6476
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 干ばつの心配は,日本ではもうなくなったのか?(招待論文)2021

    • Author(s)
      松山 洋
    • Journal Title

      地理

      Volume: 66(6) Pages: 23-27

    • Related Report
      2021 Annual Research Report
  • [Presentation] 小笠原の昔の気象のはなし2024

    • Author(s)
      松山 洋
    • Organizer
      東京都立大学公開講座
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 小笠原の昔の気象のはなし2024

    • Author(s)
      松山 洋
    • Organizer
      小笠原環境計画研究所講演会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Why severe drought occurred at Ogasawara (Bonin) Islands during El Nino event in 2018-2019?2023

    • Author(s)
      Matsuyama, H.
    • Organizer
      The International Workshop on Climate, Water, Land, and Life in Monsoon Asia
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Pre-1906 extension of precipitation data for Chichi-jima in the Ogasawara (Bonin) Islands based on the analysis of historical documents.2023

    • Author(s)
      Kanno, H. and Matsuyama, H.
    • Organizer
      The International Workshop on Climate, Water, Land, and Life in Monsoon Asia
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 古文書に基づく小笠原諸島 父島における1906年以前の降水量の復元(2)父島 扇浦における気象観測2023

    • Author(s)
      菅野洋光・松山 洋
    • Organizer
      日本地理学会 2023 年春季学術大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 小笠原諸島の水環境-渇水と台風に注目して-2022

    • Author(s)
      松山 洋
    • Organizer
      東京都立大学 オープンユニバーシティ
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Remarks] 東京都立大学 地理情報学研究室

    • URL

      https://www.comp.tmu.ac.jp/lagis/

    • Related Report
      2022 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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