Generation mechanism of the vertical motion within nimbostratus in tropical mesoscale cloud systems

• Project/Area Number: 19540460
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Kyoto University
• Principal Investigator: NISHI Noriyuki Kyoto University, 大学院・理学研究科, 助教 (00222183)
• Co-Investigator(Kenkyū-buntansha): YAMAMOTO Masayuki 京都大学, 生存圏研究所, 助教 (90346073) ; YASUNAGA Kazuaki 独立行政法人海洋研究開発機構, 地球環境観測研究センター, ポストドクトラル研究員 (50421889)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2007: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 気象学 / リモートセンシング / 地球観測 / 熱帯 / 降水システム

Research Abstract

VHFレーダーによる鉛直流観測を行い、乱層雲中の雨滴落下速度の精密測定に成功し、雲頂部・雲底部において興味深い鉛直流パターンを見いだした。乱層雲の雲頂高度などを静止衛星の赤外観測から継続的・広域的に把握する手法を開発した。降水システム内の鉛直流分布に影響を与える可能性のある独特な温度構造をインド洋域において見いだした。降水システムの鉛直流を再現する数値実験をおこなった。

Research Products

• [Journal Article] Development of the convection in the tropics and atmospheric circulation (2009)
  • Author(s): 安永数明
  • Journal Title: Calorimetry and Thermal Analysis 36 Pages: 10-17
  • NAID: 10025612603
  • Peer Reviewed
• [Journal Article] Cirrus observations in the tropical tropopause layer over the western Pacific. (2009)
  • Author(s): 藤原正智
  • Journal Title: Journal of Geophysical Science (印刷待ち)
  • Peer Reviewed
• [Journal Article] 95-GHz Doppler radar and lidar synergy for simultaneous ice microphysics and in-cloud vertical air motion retrieval. (2009)
  • Author(s): 佐藤可織
  • Journal Title: Journal of Geophysical Research 114
  • Peer Reviewed
• [Journal Article] Development of the convection in the tropics and atmospheric circulation. (2009)
  • Author(s): 安永数明
  • Journal Title: Calorimetry and Thermal Analysis 36 Pages: 10-17
  • NAID: 10025612603
  • Peer Reviewed
• [Journal Article] Cloud type and top height estimation for tropical uppertropospheric clouds using GMS-5 splitwindow measurements combined with cloud radar measurements (2008)
  • Author(s): 濱田篤、西憲敬、岩崎杉紀、大野裕一、黒岩博司、岡本創
  • Journal Title: SOLA 4 Pages: 57-60
  • NAID: 130004940890
  • Peer Reviewed
• [Journal Article] Observation of particle fall velocity in cirriform cloud by VHF and millimeter-wave Doppler radars (2008)
  • Author(s): 山本真之、大野裕一、堀江宏昭、西憲敬、ら13名
  • Journal Title: J. Geophys. Res 113D12210
  • Peer Reviewed
• [Journal Article] Diurnal Variations in Precipitable Water Observed by Shipborne GPS over the Tropical Indian Ocean (2008)
  • Author(s): 安永数明他計7名
  • Journal Title: SOLA 4
  • NAID: 130004448456
  • Peer Reviewed
• [Journal Article] Cloud type and top height estimation for tropical upper-tropospheric clouds using GMS-5 split-window measurements combined with cloud radar measurements. (2008)
  • Author(s): 濱田篤
  • Journal Title: SOLA 4 Pages: 57-60
  • Peer Reviewed
• [Journal Article] Observation of particle fall velocity in cirriform cloud by VHF and millimeter-wave Doppler radars. (2008)
  • Author(s): 山本真之
  • Journal Title: Journal of Geophysical Research 113
  • Peer Reviewed
• [Journal Article] Diurnal variations in precipitable water observed by shipbome GPS over the tropical Indian Ocean. (2008)
  • Author(s): 安永数明
  • Journal Title: Scientific Online Letters in the Atmosphere 4 Pages: 97-100
  • Peer Reviewed
• [Journal Article] Fine structure of vertical motion in the stratiform precipitation region observed by a VHF Doppler radar installed in Sumatra 、 Indonesia (2007)
  • Author(s): 西憲敬、山本真之、下舞豊志、濱田篤、深尾昌一郎
  • Journal Title: J. Applied Meteor. Climatology 46 Pages: 522-537
  • Peer Reviewed
• [Journal Article] Vertical wind observation in the tropical upper troposphere by VHF wind profiler - A case study - (2007)
  • Author(s): 山本真之、西憲敬、堀之内武、庭野将徳、深尾昌一郎
  • Journal Title: Radio Sci 42RS3005
  • Peer Reviewed
• [Journal Article] Fine structure of vertical motion in the stratiform precipitation region observed by a VHF Doppler radar installed in Sumatra, Indonesia. (2007)
  • Author(s): 西 憲敬
  • Journal Title: Journal of Applied Meteorology and Climatology 46 Pages: 522-537
  • Peer Reviewed
• [Journal Article] Vertical wind observation in the tropical upper troposphere by VHF wind profiler: A case study (2007)
  • Author(s): 山本 真之
  • Journal Title: Radio Science 42
  • Peer Reviewed
• [Journal Article] 熱帯対流圏中上部における鉛直風の数値的研究 (2007)
  • Author(s): 西 憲敬
  • Journal Title: 京都大学電波科学計算機実験共同利用研究成果報告書 Pages: 77-79
• [Presentation] 熱帯上部対流圏における準定在循環の構造 (2009)
  • Author(s): 西憲敬
  • Organizer: 第23回大気圏シンポジウム
  • Place of Presentation: 神奈川県相模原市
  • Year and Date: 2009-02-26
• [Presentation] Radar observations of mammatus clouds and turbulence in three frequency bands. (2009)
  • Author(s): 深尾昌一郎
  • Organizer: 第23回大気圏シンポジウム
  • Place of Presentation: 神奈川県相模原市
  • Year and Date: 2009-02-26
• [Presentation] 西インド洋上部対流圏定在循環の鉛直微細構造解析 (2008)
  • Author(s): 西憲敬
  • Organizer: 日本気象学会秋季大会
  • Place of Presentation: 仙台市
  • Year and Date: 2008-11-24
• [Presentation] 赤道大気レーダー(EAR)・雲レーダー(SPIDER)による氷晶の落下速度の観測 (2008)
  • Author(s): 山本真之
  • Organizer: 日本気象学会2008年度秋季大会
  • Place of Presentation: 宮城県仙台市
  • Year and Date: 2008-11-21
• [Presentation] MISMO期間前後にインド洋でみられた3回の雲活動の活発化事例 (2008)
  • Author(s): 安永数明
  • Organizer: 日本気象学会秋季大会
  • Place of Presentation: 仙台市
  • Year and Date: 2008-11-19
• [Presentation] Vertical fine structure of the upper tropospheric circulation over the western Indian Ocean during boreal summer observed by COSMIC RO (2008)
  • Author(s): 西憲敬
  • Organizer: 4th Asian Space Conference & FORMOSAT-3/COSMIC International Workshop
  • Place of Presentation: 台湾・台北
  • Year and Date: 2008-10-03
• [Presentation] Vertical fine structure of the upper tropospheric circulation over the western Indian Ocean during boreal summer observed by COSMIC RO. (2008)
  • Author(s): 西憲敬
  • Organizer: 4th Asian Space Conference & FORMOSAT-3/COSMIC International Workshop
  • Place of Presentation: 台湾・台北
  • Year and Date: 2008-10-03
• [Presentation] CloudSat 雲レーダ観測を用いた静止衛星Split-window 観測による熱帯域上層雲の種別および物理・光学量の推定 (2008)
  • Author(s): 濱田篤
  • Organizer: 第2回赤道大気シンポジウム
  • Place of Presentation: 京都市
  • Year and Date: 2008-09-26
• [Presentation] CloudSat雲レーダ観測を用いた静止衛星Split-window観測による熱帯域上層雲の種別および物理・光学量の推定 (2008)
  • Author(s): 濱田篤
  • Organizer: 第2回赤道大気シンポジウム
  • Place of Presentation: 京都市
  • Year and Date: 2008-09-26
• [Presentation] インド洋域における上部対流圏循環の鉛直微細構造 (2008)
  • Author(s): 西憲敬
  • Organizer: 第2回赤道大気シンポジウム
  • Place of Presentation: 京都市
  • Year and Date: 2008-09-25
• [Presentation] MUレーダーとレイリー/ラマンライダーによる中緯度域の巻雲観測 (2008)
  • Author(s): 山本真之
  • Organizer: 第26回レーザセンシングシンポジウム
  • Place of Presentation: 福岡県朝倉市
  • Year and Date: 2008-09-11
• [Presentation] Niunerical simulations of melting-layer cloud formation. (2008)
  • Author(s): 安永数明
  • Organizer: International Commission on Clouds and Precipitation (ICCP)
  • Place of Presentation: メキシコ・カンクン市
  • Year and Date: 2008-07-04
• [Presentation] VHF帯レーダーとライダーによる巻雲の雲頂付近における風速観測 (2008)
  • Author(s): 山本真之
  • Organizer: 日本気象学会関西支部年会
  • Place of Presentation: 大阪市
  • Year and Date: 2008-06-28
• [Presentation] Wind observation around a top of midlatitude cirriform cloud by VHF Doppler radar and Rayleigh/Raman lidar (2008)
  • Author(s): 山本真之
  • Organizer: 24th International Laser Radar Conference
  • Place of Presentation: 米国・ボルダー
  • Year and Date: 2008-06-26
• [Presentation] Wind observation around a top of midlatitude cirriform cloud by VHF Doppler radar and Ravleigh/Raman lidar (2008)
  • Author(s): 山本真之
  • Organizer: 24th International Laser Radar Conference
  • Place of Presentation: 米国・ボルグー
  • Year and Date: 2008-06-26
• [Presentation] Vertical fine structure of the circulation in the upper troposphere over the western Indian Ocean during boreal summer observed by GPS radio occultation method (2008)
  • Author(s): 西憲敬
  • Organizer: 5th Annual General Meeting, Asia Oceania Geosciences Society
  • Place of Presentation: 韓国・釜山
  • Year and Date: 2008-06-20
• [Presentation] Vertical fine structure of the circulation in the upper troposphere over the western Indian Ocean during boreal summer observed by GPS radio occultation method. (2008)
  • Author(s): 西憲敬
  • Organizer: 5th Annual General Meeting, Asia Oceania Geosciences Society
  • Place of Presentation: 韓国・釜山
  • Year and Date: 2008-06-20
• [Presentation] VHF帯レーダー・ミリ波レーダー・可視光ライダーによる雲内及び周辺の風速観測 (2008)
  • Author(s): 山本真之
  • Organizer: 電子情報通信学会マイクロ波研究会
  • Place of Presentation: 京都府宇治市
  • Year and Date: 2008-05-29
• [Presentation] MISMO期間中に観測された3-4日周期の変動 (2008)
  • Author(s): 安永数明
  • Organizer: 日本気象学会春季大会
  • Place of Presentation: 横浜市
  • Year and Date: 2008-05-21
• [Presentation] MISMO期間中に観測されたMJOの全球雲解像モデルNICAMによる再現実験 (2008)
  • Author(s): 安永数明
  • Organizer: 日本気象学会春季大会
  • Place of Presentation: 横浜市
  • Year and Date: 2008-05-21
• [Presentation] インド洋域における上部対流圏循環の鉛直微細構造 (2008)
  • Author(s): 西憲敬
  • Organizer: 日本気象学会春季大会
  • Place of Presentation: 横浜市
  • Year and Date: 2008-05-20
• [Presentation] MUレーダーとレイリー/ラマンライダーによる中緯度域の巻雲観測 (2008)
  • Author(s): 山本真之
  • Organizer: 日本気象学会2008年度春季大会
  • Place of Presentation: 横浜市
  • Year and Date: 2008-05-18
• [Presentation] Semidiurnal variations in precipitation and atmospheric tides in an Aqua-planet global cloud-resolving model (Aqua-planet-NICAM) (2008)
  • Author(s): 安永数明
  • Organizer: 28th Conference on Hurricanes and Tropical Meteorology
  • Place of Presentation: 米国・オーランド市
  • Year and Date: 2008-05-01
• [Presentation] Semidiurnal variations in precipitation and atmospheric tides in an Aqua-planet slobal cloud-resolving model (Aqua-planet-NICAM). (2008)
  • Author(s): 安永数明
  • Organizer: 28th Conference on Hurricanes and Tropical Meteorology
  • Place of Presentation: 米国・オーランド市
  • Year and Date: 2008-05-01
• [Presentation] MUレーダーとレイリー/ラマンライダーによる中緯度域の巻雲観測 (2008)
  • Author(s): 山本 真之
  • Organizer: 第21回大気圏シンポジウム
  • Place of Presentation: 相模原市(神奈川県)
  • Year and Date: 2008-02-28
• [Presentation] 熱帯上部対流圏における大規模東進擾乱の構造 (2008)
  • Author(s): 西 憲敬
  • Organizer: 第21回大気圏シンポジウム
  • Place of Presentation: 相模原市(神奈川県)
  • Year and Date: 2008-02-27
• [Presentation] Fine structure of vertical motion in the stratiform precipitation region observed by Equatorial Atmosphere Radar (EAR) in Sumatra, Indonesia (2007)
  • Author(s): 西憲敬
  • Organizer: American Meteorological Society
  • Place of Presentation: オーストラリア・ケアンズ
  • Year and Date: 2007-08-06
• [Presentation] Fine structure of vertical motion in the stratiform precipitation region observed by Equatorial Atmosphere Radar (EAR) in Sumatra, Indonesia. (2007)
  • Author(s): 西 憲敬
  • Organizer: 3rd International Conference on Radar Meteorology, Americal Meteorological Society
  • Place of Presentation: ケアンズ(オーストラリア)
  • Year and Date: 2007-08-06
• [Presentation] Cloud Satミリ波雲レータとMTSAT赤外split-windowを用いた熱帯域乱層雲・巻雲の幾何・光学特性の推定 (2007)
  • Author(s): 濱田 篤
  • Organizer: 日本気象学会2007年度春季大会
  • Place of Presentation: 東京
  • Year and Date: 2007-05-16