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Study on tropical tropopause layer by developing high-performance equatorial atmosphere radar

Research Project

Project/Area Number 19H01967
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 17020:Atmospheric and hydrospheric sciences-related
Research InstitutionKyoto University

Principal Investigator

Hashiguchi Hiroyuki  京都大学, 生存圏研究所, 教授 (90293943)

Co-Investigator(Kenkyū-buntansha) 柴垣 佳明  大阪電気通信大学, 情報通信工学部, 教授 (00319592)
柴田 泰邦  東京都立大学, システムデザイン研究科, 准教授 (10305419)
下舞 豊志  島根大学, 学術研究院理工学系, 准教授 (30325039)
鈴木 順子  国立研究開発法人海洋研究開発機構, 地球環境部門(大気海洋相互作用研究プログラム), 研究員 (50512878)
荻野 慎也  国立研究開発法人海洋研究開発機構, 地球環境部門(大気海洋相互作用研究プログラム), 主任研究員 (80324937)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2019: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Keywords熱帯対流圏界層(TTL) / 赤道大気レーダー(EAR) / STRATEOLE-2 / ケルビン波 / 大気不安定 / 熱帯対流圏界層 / 赤道大気レーダー
Outline of Research at the Start

熱帯対流圏界層(TTL)は熱帯域特有の対流圏から成層圏への遷移領域であり、成層圏・対流圏間の物質交換に重要な役割を果たしている。フランスを中心とするグループによりスーパープレッシャー気球を用いたTTLの観測キャンペーンSTRATEOLE-2が実施予定である。本研究では、STRATEOLE-2キャンペーンに協同して、赤道大気レーダーを用いた大気不安定の高分解能観測、ラジオゾンデによる気温・乱流・オゾンの観測、ライダーによるオゾン・水蒸気・雲微物理量の観測から、TTLにおける、大気不安定の発生メカニズム、雲・エアロゾルとの相互作用、成層圏対流圏間物質交換(STE)を研究する。

Outline of Final Research Achievements

A digital receiving system using a software-defined radio (SDR) was developed to enable multi-channel observations with the Equatorial Atmosphere Radar (EAR). The tropical tropopause later (TTL) is a transition region between the troposphere and the stratosphere peculiar to the tropical zone. Physical and chemical processes in the TTL are important because they affect Stratosphere-Troposphere Exchange (STE). We conducted intensive observations of temperature, turbulence, and ozone profiles using radiosondes in addition to continuous observations of wind velocity profiles with the EAR in collaboration with STRATEOLE-2 (TTL / lower stratospheric observation project using super pressure long duration balloons). We studied the mechanism of atmospheric instability and the STE in the TTL.

Academic Significance and Societal Importance of the Research Achievements

赤道域は地表へ入射する太陽放射エネルギーを最も強く受ける領域で、地球大気の各種現象の駆動源であるが、その中でも特にインドネシア海洋大陸域では、太陽光による島嶼(とうしょ)の加熱と周辺の海洋からの水蒸気供給によって、地球上で最も対流活動が活発で、対流や大気波動の砕波に伴って乱流が発生している。熱帯対流圏界層(TTL)は熱帯域特有の遷移領域であり、成層圏・対流圏間の物質交換に重要な役割を果たしている。本研究では、赤道大気レーダー(EAR)を中心としてキャンペーン観測を実施し、観測データの解析から、赤道ケルビン波に伴う大気不安定や成層圏対流圏間物質交換(STE)に関して新たな知見が得られた。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (36 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (6 results) Journal Article (6 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (24 results) (of which Int'l Joint Research: 10 results,  Invited: 4 results)

  • [Int'l Joint Research] インドネシア航空宇宙庁(LAPAN)(インドネシア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] フランス大気環境宇宙観測研究所 (LATMOS)(フランス)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] インドネシア航空宇宙庁(LAPAN)(インドネシア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] フランス大気環境宇宙観測研究所 (LATMOS)(フランス)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] インドネシア航空宇宙庁(LAPAN)(インドネシア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] フランス大気環境宇宙観測研究所 (LATMOS)(フランス)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Capability of GPM IMERG Products for Extreme Precipitation Analysis over the Indonesian Maritime Continent2022

    • Author(s)
      Ramadhan Ravidho、Marzuki Marzuki、Yusnaini Helmi、Muharsyah Robi、Suryanto Wiwit、Sholihun Sholihun、Vonnisa Mutya、Battaglia Alessandro、Hashiguchi Hiroyuki
    • Journal Title

      Remote Sensing

      Volume: 14 Issue: 2 Pages: 412-412

    • DOI

      10.3390/rs14020412

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Retrieval of Vertical Structure of Raindrop Size Distribution from Equatorial Atmosphere Radar and Boundary Layer Radar2022

    • Author(s)
      Vonnisa Mutya、Shimomai Toyoshi、Hashiguchi Hiroyuki、Marzuki
    • Journal Title

      Emerging Science Journal

      Volume: 6 Issue: 3 Pages: 448-459

    • DOI

      10.28991/esj-2022-06-03-02

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Characteristics of Precipitation Diurnal Cycle over a Mountainous Area of Sumatra Island including MJO and Seasonal Signatures Based on the 15-Year Optical Rain Gauge Data, WRF Model and IMERG2021

    • Author(s)
      Marzuki、Yusnaini Helmi、Ramadhan Ravidho、Tangang Fredolin、Amirudin Abdul Azim Bin、Hashiguchi Hiroyuki、Shimomai Toyoshi、Vonnisa Mutya
    • Journal Title

      Atmosphere

      Volume: 13 Issue: 1 Pages: 63-63

    • DOI

      10.3390/atmos13010063

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On the estimation of vertical air velocity and detection of atmospheric turbulence from the ascent rate of balloon soundings2020

    • Author(s)
      Luce Hubert、Hashiguchi Hiroyuki
    • Journal Title

      Atmospheric Measurement Techniques

      Volume: 13 Issue: 4 Pages: 1989-1999

    • DOI

      10.5194/amt-13-1989-2020

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evaluation of EAR Spaced Antenna Performance Using Multiple Receiving Antennas Orientations2020

    • Author(s)
      N. A. M. Aris, H. Hashiguchi, and M. Yamamoto
    • Journal Title

      Radio Science

      Volume: 55 Issue: 6

    • DOI

      10.1029/2019rs007049

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of Software-Defined Multichannel Receiver for EAR2019

    • Author(s)
      N. A. M. Aris, H. Hashiguchi, and M. Yamamoto
    • Journal Title

      Radio Sci.

      Volume: 54 Issue: 7 Pages: 671-679

    • DOI

      10.1029/2019rs006817

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] インドネシアにおける煙霧のライダー観測計画2022

    • Author(s)
      柴田泰邦・阿保真
    • Organizer
      第16回MUレーダー・赤道大気レーダーシンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Observations of Turbulent Mixing in Tropical Tropopause Layer (TTL)2022

    • Author(s)
      Hiroyuki Hashiguchi, Momoko Hashino, Richard Wilson, Shinya Ogino, and Junko Suzuki
    • Organizer
      LAPAN/BRIN-Kyoto University International Symposium for Equatorial Atmosphere
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A Review on Equatorial Atmosphere Radar (EAR) Observations - Turbulent layer and ozone vertical distribution in tropical tropopause layer (TTL) based on Strateole-2 pre-campaign -2022

    • Author(s)
      Hiroyuki Hashiguchi
    • Organizer
      2nd INternational Conference on Radioscience, Equatorial Atmospheric Science and Environment (INCREASE)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 熱帯対流圏界層(TTL)における乱流層とオゾン鉛直分布の観測2021

    • Author(s)
      橋口浩之・橋野桃子・Richard Wilson・荻野慎也・鈴木順子
    • Organizer
      日本気象学会2021年度春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 熱帯対流圏界層(TTL)における乱流層とオゾン鉛直分布の観測2021

    • Author(s)
      橋口浩之・橋野桃子・Richard Wilson・荻野慎也・鈴木順子
    • Organizer
      日本地球惑星科学連合2021年大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Phased Array Atmospheric Radar2021

    • Author(s)
      H. Hashiguchi
    • Organizer
      International E-Conference on Advances in Information Technology and Research
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 赤道大気レーダー観測に基づいた西スマトラ山岳域での下層風速場の違いによる対流活動の特徴について2021

    • Author(s)
      柴垣佳明・橋口浩之・下舞豊志・山中大学
    • Organizer
      第15回MUレーダー・赤道大気レーダーシンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] インドネシアにおけるライダーを用いた煙霧観測手法の検討2021

    • Author(s)
      柴田泰邦・Isam Ebisawa KUSWAN・阿保真
    • Organizer
      第15回MUレーダー・赤道大気レーダーシンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Development of Software-Defined Multichannel Receiver for Equatorial Atmosphere Radar (EAR)2020

    • Author(s)
      Hiroyuki Hashiguchi, Nor Azlan Bin Mohd Aris, and Mamoru Yamamoto
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observation of ozone vertical mixing due to KH instability in tropical tropopause layer2020

    • Author(s)
      Momoko Hashino, Hiroyuki Hashiguchi, Richard Wilson, Shinya Ogino, and Junko Suzuki
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] スマトラ島で観測されたオゾン変動と力学場の関係について2020

    • Author(s)
      鈴木順子・荻野慎也・木下武也・城岡竜一・岩崎杉紀・米山邦夫
    • Organizer
      第14回MUレーダー・赤道大気レーダーシンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 熱帯対流圏界層における乱流による混合の観測2020

    • Author(s)
      橋野桃子・橋口浩之・Richard Wilson・荻野慎也・鈴木順子
    • Organizer
      第14回MUレーダー・赤道大気レーダーシンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] YMC-BSM2018で観測されたインドシナ半島におけるオゾン変動2020

    • Author(s)
      荻野慎也・鈴木順子・木下武也・城岡竜一
    • Organizer
      第14回MUレーダー・赤道大気レーダーシンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] ライダーによる赤道域対流圏・成層圏のエアロゾル動態モニタリング2020

    • Author(s)
      阿保真・柴田泰邦・長澤親生
    • Organizer
      第14回MUレーダー・赤道大気レーダーシンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 熱帯対流圏界層における乱流による混合の観測2020

    • Author(s)
      橋野桃子・橋口浩之・Richard Wilson・荻野慎也・鈴木順子
    • Organizer
      日本気象学会2020年度秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 熱帯対流圏界層における乱流による混合の観測2020

    • Author(s)
      橋野桃子・橋口浩之・Richard Wilson・荻野慎也・鈴木順子
    • Organizer
      第148回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Observations of turbulent mixing in Tropical Tropopause Layer (TTL)2020

    • Author(s)
      Momoko Hashino, Hiroyuki Hashiguchi, Richard Wilson, Shinya Ogino, and Junko Suzuki
    • Organizer
      The 5th Asia Research Node Symposium on Humanosphere Science
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of Software-Defined Multichannel Receiver for Equatorial Atmosphere Radar (EAR)2020

    • Author(s)
      Hiroyuki Hashiguchi, Nor Azlan Bin Mohd Aris, and Mamoru Yamamoto
    • Organizer
      The 5th Asia Research Node Symposium on Humanosphere Science
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Status of Equatorial MU Radar project in 20192019

    • Author(s)
      山本衛・橋口浩之・横山竜宏・津田敏隆
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 太陽地球系結合過程の研究基盤形成2019

    • Author(s)
      山本衛・橋口浩之・横山竜宏・宮岡宏・小川泰信・塩川和夫・野澤悟徳・吉川顕正・津田敏隆
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] The MU radar, Equatorial Atmosphere Radar, and future project EMU2019

    • Author(s)
      Mamoru Yamamoto, Hiroyuki Hashiguchi, and Toshitaka Tsuda
    • Organizer
      URSI-Japan Radio Science Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of Equatorial Atmosphere Radar (EAR) Spaced-Antenna Performance from Multiple Orientation of the Receiving Antennas2019

    • Author(s)
      Nor Azlan bin Mohd Aris, Hiroyuki Hashiguchi, and Mamoru Yamamoto
    • Organizer
      39th International Conference on Radar Meteorology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] YMC-BSM 2018期間中にコトタバンで観測された水蒸気・上層雲変動2019

    • Author(s)
      鈴木順子・荻野慎也・木下武也・城岡竜一・橋口浩之・米山邦夫
    • Organizer
      日本気象学会2019年度秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Cirrus and Ozone Variabilities in the UTLS over the maritime continent during YMC-Sumatra 2017 Field Campaign2019

    • Author(s)
      Junko Suzuki, Shin-Ya Ogino, Ryuichi Shirooka, Takenari Kinoshita, Shuichi Mori, Suginori Iwasaki, Urip Haryoko, and Kunio Yoneyama
    • Organizer
      AGU Fall Meeting 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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