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Investigating precipitation vertical profiles associated with various atmospheric conditions based on satellite observations

Research Project

Project/Area Number 16H06725
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Hydraulic engineering
Research InstitutionThe University of Tokyo

Principal Investigator

Utsumi Nobuyuki  東京大学, 生産技術研究所, 博士研究員 (60594752)

Research Collaborator Kim Hyungjun  
Project Period (FY) 2016-08-26 – 2018-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords降水 / 鉛直プロファイル / 気象システム / 衛星リモートセンシング / 衛星観測 / 雲 / 水文気象学
Outline of Final Research Achievements

Weather system classification algorithm was restructured so that it works for various spatial/temporal resolutions. Also, the database of precipitation vertical profiles for various precipitation types and lower atmospheric conditions was developed based on satellite precipitation radar (TRMM/PR) observations. A new method to estimate the subhourly surface rain accumulation using instantaneous observation was proposed. A proof-of-concept study for this method was carried out based on the developed dataset and high-temporal resolution rain gauge observations. It was shown that time accumulation of surface rainfall on subhourly time scales can be estimated well by taking into account the vertical rain profile information.

Academic Significance and Societal Importance of the Research Achievements

降水をもたらす様々な気象システムを客観的に分類する手法の改良を行った。
また、人工衛星に搭載された降水レーダーによる観測を用いて、様々な降水のタイプや大気状態に対応する降水の鉛直構造のデータベースを開発した。さらに作成したデータベースを用いて、人工衛星による瞬間的な観測情報から、地上降水量の時間積算値を推定する手法の実証実験を行った。これは、瞬時値しか観測できない低軌道衛星観測から、実用上重要な地上降水量の時間積算値を推定できる可能性を示したものである。

Report

(3 results)
  • 2018 Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (9 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Acknowledgement Compliant: 1 results) Presentation (5 results) (of which Int'l Joint Research: 5 results)

  • [Int'l Joint Research] Jet Propulsion Laboratory(米国)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Improving satellite-based sub-hourly surface rain estimates using vertical rain profile information2019

    • Author(s)
      Utsumi Nobuyuki、Kim Hyungjun、Turk F. Joseph、Haddad Ziad. S.
    • Journal Title

      Journal of Hydrometeorology

      Volume: 印刷中 Issue: 5 Pages: 1015-1026

    • DOI

      10.1175/jhm-d-18-0225.1

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Warm Season Satellite Precipitation Biases for Different Cloud Types Over Western North Pacific2018

    • Author(s)
      Utsumi Nobuyuki、Kim Hyungjun
    • Journal Title

      IEEE Geoscience and Remote Sensing Letters

      Volume: 15 Issue: 6 Pages: 808-812

    • DOI

      10.1109/lgrs.2018.2815590

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Relative contributions of weather systems to mean and extreme global precipitation2016

    • Author(s)
      Nobuyuki Utsumi, Hyungjun Kim, Shinjiro Kanae, and Taikan Oki
    • Journal Title

      Journal of Geophysical Research: Atmospheres

      Volume: 122 Issue: 1 Pages: 152-167

    • DOI

      10.1002/2016jd025222

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Improving satellite-based sub-hourly surface rain estimates using vertical rain profile information2018

    • Author(s)
      Utsumi, N., H. Kim, F. J. Turk, and Z. S. Haddad
    • Organizer
      AGU Fall Meeting 2018
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Improving satellite-based sub-hourly surface rain estimates using vertical rain profile information2018

    • Author(s)
      Utsumi, N., H. Kim, F. J. Turk, and Z. S. Haddad
    • Organizer
      9Th Workshop of International Precipitation Working Group
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Systematic Differences in Satellite Precipitation Products Associated with Cloud Types over Western North Pacific2017

    • Author(s)
      Utsumi, N., H. Kim
    • Organizer
      AGU Fall Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Relative contributions of different weather systems to the changes in annual mean and extreme precipitation in CMIP5 models2016

    • Author(s)
      Nobuyuki Utsumi, Hyungjun Kim, Shinjiro Kanae, and Taikan Oki
    • Organizer
      AGU Fall meeting
    • Place of Presentation
      San Francisco (USA)
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Intercomparison of satellite precipitation products for different cloud types2016

    • Author(s)
      Nobuyuki Utsumi, Hyungjun Kim, and Taikan Oki
    • Organizer
      8th IPWG and 5th IWSSM Joint Workshop
    • Place of Presentation
      Bologna (Italy)
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research

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Published: 2016-09-02   Modified: 2020-03-30  

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