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Toward investigating ultra dense and rapid lightning observation data assimilation for the torrential rainfall forecast

Research Project

Project/Area Number 18K13614
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 17020:Atmospheric and hydrospheric sciences-related
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Yasumitsu Maejima  国立研究開発法人理化学研究所, 計算科学研究センター, 特別研究員 (90509564)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsデータ同化 / メソ気象学 / 数値気象予報 / 気象予報 / 豪雨予測 / 気象災害 / 数値天気予報 / 局地的豪雨 / メソ気象 / 大気力学 / 気象学
Outline of Final Research Achievements

The local torrential rainfall that often occur mainly during warm weather periods is a disasterable weather and are considered one of the most difficult weather phenomena to predict. In this project, we adopted "ultra high dense and frequent lightning position data" as the latest big data from meteorological observations, and assimilated it using the numerical weather forecast system "SCALE-LETKF" which developed at RIKEN, in order to dramatically improve the forecast accuracy of torrential rainfall. The research aimed to dramatically improve the accuracy of forecasting the severe weather. As part of the results of this project, we received the SOLA Paper Award from the Meteorological Society of Japan in 2022.

Academic Significance and Societal Importance of the Research Achievements

我が国ではほぼ毎年のように「これまで経験したことないような雨」と形容されるような豪雨が発生する状況にある一方、その予測においては、短時間で急速に発達するという物理特性に加え、災害が発生しやすい地域で具体的にどの程度降水が起きるのか、定量的に示すこは難しいという課題があった。
本研究では、これまで数値天気予報で用いられていない「雷発光データ」の同化技術を確立したこと、それによる「豪雨予測改善の道筋を立てたこと」において学術的意義を持つ。さらに、本研究成果が現業の予報等に利活用されるこによって、豪雨による社会負担軽減へつながっていくことに、社会的意義を持つ。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (41 results)

All 2023 2022 2021 2020 2019 2018 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (31 results) (of which Int'l Joint Research: 17 results,  Invited: 6 results) Book (1 results) Remarks (3 results)

  • [Journal Article] Observing System Simulation Experiments of a Rich Phased Array Weather Radar Network Covering Kyushu for the July 2020 Heavy Rainfall Event2022

    • Author(s)
      Maejima Yasumitsu、Kawabata Takuya、Seko Hiromu、Miyoshi Takemasa
    • Journal Title

      SOLA

      Volume: 18 Issue: 0 Pages: 25-32

    • DOI

      10.2151/sola.2022-005

    • ISSN
      1349-6476
    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of the Real‐Time 30‐s‐Update Big Data Assimilation System for Convective Rainfall Prediction With a Phased Array Weather Radar: Description and Preliminary Evaluation2022

    • Author(s)
      Honda T.、Amemiya A.、Otsuka S.、Lien G.‐Y.、Taylor J.、Maejima Y.、Nishizawa S.、Yamaura T.、Sueki K.、Tomita H.、Satoh S.、Ishikawa Y.、Miyoshi T.
    • Journal Title

      Journal of Advances in Modeling Earth Systems

      Volume: 14 Issue: 6 Pages: 14-20

    • DOI

      10.1029/2021ms002823

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Advantage of 30‐s‐Updating Numerical Weather Prediction With a Phased‐Array Weather Radar Over Operational Nowcast for a Convective Precipitation System2022

    • Author(s)
      Honda T.、Amemiya A.、Otsuka S.、Taylor J.、Maejima Y.、Nishizawa S.、Yamaura T.、Sueki K.、Tomita H.、Miyoshi T.
    • Journal Title

      Geophysical Research Letters

      Volume: 49 Issue: 11 Pages: 49-60

    • DOI

      10.1029/2021gl096927

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Predictability of the July 2020 Heavy Rainfall with the SCALE-LETKF2021

    • Author(s)
      Taylor James、Amemiya Arata、Honda Takumi、Maejima Yasumitsu、Miyoshi Takemasa
    • Journal Title

      SOLA

      Volume: 17 Issue: 0 Pages: 48-56

    • DOI

      10.2151/sola.2021-008

    • NAID

      130008002570

    • ISSN
      1349-6476
    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impact of the Window Length of Four-Dimensional Local Ensemble Transform Kalman Filter: A Case of Convective Rain Event2020

    • Author(s)
      Maejima Yasumitsu、Miyoshi Takemasa
    • Journal Title

      SOLA

      Volume: 16 Issue: 0 Pages: 37-42

    • DOI

      10.2151/sola.2020-007

    • NAID

      130007801611

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impact of Dense and Frequent Surface Observations on 1-Minute-Update Severe Rainstorm Prediction: A Simulation Study2019

    • Author(s)
      Yasumitsu MAEJIMA, Takemasa MIYOSHI, Masaru KUNII, Hiromu SEKO, Kae SATO
    • Journal Title

      Journal of the Meteorological Society of Japan. Ser. II

      Volume: 97 Issue: 1 Pages: 253-273

    • DOI

      10.2151/jmsj.2019-014

    • NAID

      130007593038

    • ISSN
      0026-1165, 2186-9057
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] A Control Simulation Experiment for August 2014 Severe Rainfall Event Using a Regional Model2023

    • Author(s)
      Yasumitsu Maejima and Takemasa Miyoshi
    • Organizer
      The 5th R-CCS International Symposium
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 領域気象モデルを使った局地豪雨の制御シミュレーション実験2023

    • Author(s)
      前島 康光, 三好建正
    • Organizer
      第13回データ同化ワークショップ
    • Related Report
      2022 Annual Research Report
  • [Presentation] 領域気象モデルを使った局地豪雨の制御シミュレーション実験2023

    • Author(s)
      前島 康光, 三好建正
    • Organizer
      第14回理研・京大データ同化研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 富岳を用いた2021年夏季リアルタイムゲリラ豪雨予測の結果解析2023

    • Author(s)
      前島 康光
    • Organizer
      「富岳」成果創生加速プログラム・2022年度成果報告会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 令和2年7月豪雨を対象とした高密度PAWRの観測システムシミュレーション実験2023

    • Author(s)
      前島 康光
    • Organizer
      第8回先端的データ同化と巨大アンサンブル研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 領域気象モデルを使った局地豪雨の制御シミュレーション実験2022

    • Author(s)
      前島 康光, 三好建正
    • Organizer
      日本気象学会2022年度春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] A Control Simulation Experim領域気象モデルを使った局地豪雨の制御シミュレーション実験2022

    • Author(s)
      前島 康光, 三好建正
    • Organizer
      日本気象学会2022年度秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] A Control Simulation Experiment for August 2014 Severe Rainfall Event Using a Regional Model2022

    • Author(s)
      Yasumitsu Maejima and Takemasa Miyoshi
    • Organizer
      Japan Geoscience Union 2022 Annual Meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 富岳を用いた2021年夏季リアルタイムゲリラ豪雨予測の結果解析2022

    • Author(s)
      前島康光
    • Organizer
      「富岳」成果創生加速プログラム・2022年度シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 富岳を用いた2021年夏季リアルタイムゲリラ豪雨予測の結果解析2022

    • Author(s)
      前島 康光, 藤田駿, 三好建正
    • Organizer
      第24回非静力学モデルに関するワークショップ
    • Related Report
      2022 Annual Research Report
  • [Presentation] A Control Simulation Experiment for August 2014 Severe Rainfall Event Using a Regional Model2022

    • Author(s)
      Yasumitsu Maejima and Takemasa Miyoshi
    • Organizer
      Europian Geosciences Union General Assembly 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Toward assimilation of high-precision 3-D lightning location data for severe thunderstorm forecast2021

    • Author(s)
      前島 康光、冨澤 風翔、牛尾知雄、三好建正
    • Organizer
      Japan Geoscience Union Mmeeting 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Big Data Assimilation: Real-time Demonstration Experiment of 30-second-update Forecasting in Tokyo in August 20202021

    • Author(s)
      三好建正、本田匠、雨宮新、大塚成徳、前島康光、Taylor James、富田浩文、西澤誠也、末木健太、山浦剛、石川裕、佐藤晋介、牛尾知雄、小池佳奈、星絵里香、中島研吾
    • Organizer
      Japan Geoscience Union Mmeeting 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 高頻度・高分解能雷観測データBOLTの同化に向けた観測演算子の構築2021

    • Author(s)
      前島 康光、冨澤 風翔、牛尾知雄、三好建正
    • Organizer
      日本気象学会2021年度春季大会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 雷観測データBOLTの同化に向けた観測演算子の設計調査2020

    • Author(s)
      前島 康光, 牛尾 知雄, 三好 建正
    • Organizer
      日本気象学会2020年度春季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] EFSOを用いた稠密地上観測データ同化のインパクト評価2020

    • Author(s)
      前島 康光, 三好 建正
    • Organizer
      日本気象学会2020年度秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Toward assimilation of dense and frequent 3-D lightning location data for severe local thunderstorm forecast2020

    • Author(s)
      Yasumitsu Maejima, Tomoo Ushio and Takemasa Miyoshi
    • Organizer
      The 3rd R-CCS International Symposium
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Yasumitsu Maejima, Tomoo Ushio and Takemasa Miyoshi2020

    • Author(s)
      Toward assimilation of dense and frequent 3-D lightning location data on a severe local rainfall forecast
    • Organizer
      Japan Geoscience Union Meeting 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 高頻度・高解像度3次元 雷発光データ同化に向けた取り組み2020

    • Author(s)
      前島 康光, 牛尾 知雄, 三好 建正
    • Organizer
      令和2年度 「富岳」成果創生加速プログラム成果報告会
    • Related Report
      2020 Research-status Report
  • [Presentation] Big Data Assimilation: Real-Time Workflow for 30-Second-Update Forecasting and Perspectives Toward DA-AI Integration2020

    • Author(s)
      Takemasa Miyoshi, Takumi Honda, Marimo Ohhigashi, Shigenori Otsuka, Arata Amemiya, Yasumitsu Maejima, Shunji Kotsuki, Yoshihiro Ishikawa, Hiromu Seko, Yoshito Yoshizaki, Naonori Ueda, Hirofumi Tomita, Yutaka Ishikawa, Shinsuke Satoh, Tomoo Ushio, Kana Koike, Yasuhiko Nakada
    • Organizer
      100th American Meteorological Society Annual Meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Toward an integrated NWP-DA-AI system for 30-second-update precipitation prediction2020

    • Author(s)
      Shigenori Otsuka, Yasumitsu Maejima, Pierre Tandeo, Takemasa Miyoshi
    • Organizer
      ECMWF-ESA Workshop on Machine Learning for Earth System Observation and Prediction
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 深層学習と数値天気予報の融合による降水予測に向けて2020

    • Author(s)
      大塚成徳, 前島康光, Pierre Tandeo, 三好建正
    • Organizer
      日本気象学会2020年度秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Assimilating every 30-second phased array weather radar data in a torrential rainfall event on July 6, 2018 around Kobe city2020

    • Author(s)
      Yasumitsu Maejima, Shigenori Otsuka and Takemasa Miyoshi
    • Organizer
      The 2nd R-CCS International Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 平成30年7月豪雨を対象とした 高頻度・高解像度フェーズドアレイ気象レーダーデータ同化実験2019

    • Author(s)
      前島康光, 大塚成徳, 三好建正
    • Organizer
      日本気象学会2019年度春季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Assimilating every 30-second phased array weather radar data in a torrential rainfall event on July 6, 2018 around Kobe city2019

    • Author(s)
      Yasumitsu Maejima, Shigenori Otsuka and Takemasa Miyoshi
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Assimilating every 30-second phased array weather radar data in a torrential rainfall event on July 6, 2018 around Kobe city2019

    • Author(s)
      Yasumitsu Maejima, Shigenori Otsuka and Takemasa Miyoshi
    • Organizer
      39th International Conference on Radar Meteorology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Assimilating every 30-second phased array weather radar data in a torrential rainfall event on July 6, 2018 around Kobe city2019

    • Author(s)
      Yasumitsu MAEJIMA, Shigenori OTSUKA, Takemasa MIYOSHI
    • Organizer
      7th International Symposium on Data Assimilation
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Assimilating every 30-second phased array weather radar data in a torrential rainfall event on July 6, 2018 around Kobe city2019

    • Author(s)
      Yasumitsu MAEJIMA, Shigenori OTSUKA, Takemasa MIYOSHI
    • Organizer
      The 1st R-CCS Symposium
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Impact of every 30-second phased array weather radar data on simulating a torrential rainfall event on July 6, 2018 around Kobe city.2018

    • Author(s)
      Yasumitsu MAEJIMA, Shigenori OTSUKA, Takemasa MIYOSHI
    • Organizer
      5th International Workshop on Nonhydrostatic Models
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 高頻度・高分解能雷観測データと100 m メッシュSCALE-LETKF によるシミュレーションとの比較2018

    • Author(s)
      前島康光, 牛尾知雄, 三好建正
    • Organizer
      日本気象学会2018年度秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 30-second cycle LETKF assimilation of dual phased array weather radar observations to short-range convective forecasts2018

    • Author(s)
      James TAYLOR, Guo-Yuan LIEN, Shinsuke SATOH, Takemasa MIYOSHI, Yasumitsu MAEJIMA
    • Organizer
      5th International Workshop on Nonhydrostatic Models
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Book] On the Use of the Ensemble Kalman Filter for Torrential Rainfall Forecasts; Floods - Understanding Existing and Emerging Risk Drivers in a Climate Change Context2022

    • Author(s)
      Yasumitsu Maejima
    • Total Pages
      12
    • Publisher
      Intechopen
    • Related Report
      2022 Annual Research Report
  • [Remarks] データ同化研究チーム 研究業績

    • URL

      http://www.data-assimilation.riken.jp/jp/achievements/index.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] 理化学研究所データ同化研究チーム

    • URL

      http://www.data-assimilation.riken.jp/

    • Related Report
      2020 Research-status Report
  • [Remarks] 理化学研究所計算科学研究センターデータ同化チーム2019年度研究業績

    • URL

      http://www.data-assimilation.riken.jp/jp/achievements/2019.html

    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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