Interaction between Ocean fronts and the Atmosphere in the Kuroshio Extension Region.

2011 Fiscal Year Final Research Report

• Project/Area Number: 21540458
• 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: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: TAGUCHI Bunmei 独立行政法人海洋研究開発機構, 地球シミュレータセンター, 研究員 (80435841)
• Co-Investigator(Kenkyū-buntansha): NONAKA Masami 独立行政法人海洋研究開発機構, 地球環境変動領域, チームリーダー (90358771)
• Co-Investigator(Renkei-kenkyūsha): KOMORI Nobumasa 独立行政法人海洋研究開発機構, 地球シミュレータセンター, チームリーダー (80359223)
• Project Period (FY): 2009 – 2011
• Keywords: 中緯度大気海洋相互作用 / 海洋前線 / ストームトラック / 十年規模変動 / 大気海洋結合モデル / 海面熱フラックス / 黒潮続流 / 亜寒帯前線帯

Research Abstract

Interaction between ocean fronts and the atmosphere in the Kuroshio Extension region is investigated using high-resolution atmosphere, ocean, and atmosphere-ocean coupled models. It is demonstrated that sharp sea surface temperature gradients help to maintain atmospheric synoptic disturbance activity and climatological mean atmospheric circulation with the latter sustained by collective feedback from the former. Furthermore, a positive feedback is suggested to be operative between the atmospheric response to axial variations of ocean fronts and the atmospheric forcing that induces the oceanic frontal variation in the first place, a feedback that likely helps enhance the atmosphere-ocean coupled variability in the North Pacific.

Research Products

• [Journal Article] Deep oceanic zonal jets constrained by fine-scale wind stress curls in the South Pacific Ocean : A high-resolution coupled GCM study. (2012)
  • Author(s): Bunmei Taguchi, Ryo Furue, Nobumasa Komori, Akira Kuwano-Yoshida, Masami Nonaka
  • Journal Title: Geophysical Research Letter Volume: 39
  • DOI: DOI:10.1029/2012GL051248.
  • Peer Reviewed
• [Journal Article] Seasonal evolutions of atmospheric response to decadal SST anomalies in the North Pacific subarctic frontal zone : Observations and a coupled model simulation (2012)
  • Author(s): Bunmei Taguchi, Hisashi Nakamura, Masami Nonaka, Nobumasa Komori
  • Journal Title: Journal of Climate Volume: 25 Pages: 111-139
  • URL: http://dx.doi.org/10.1175/JCLI-D-11-00046.1
  • Peer Reviewed
• [Journal Article] Potential predictability of interannual variability in the Kuroshio Extension jet speed in an eddy-resolving OGCM (2012)
  • Author(s): Masami Nonaka, Hideharu Sasaki, Bunmei Taguchi, Hisashi Nakamura
  • Journal Title: Journal of Climate Volume: 25 Pages: 3645-3652
  • URL: http://dx.doi.org/10.1175/JCLI-D-11-00641.1
  • Peer Reviewed
• [Journal Article] Decadal variability of the Kuroshio Extension : Mesoscale eddies and recirculations (2010)
  • Author(s): Bunmei Taguchi, Bo Qiu, Masami Nonaka
  • Journal Title: Ocean Dynamics Volume: 60 Pages: 673-691
  • Peer Reviewed
• [Journal Article] 新用語解説」海面水温前線 (2010)
  • Author(s): 田口文明,野中正見
  • Journal Title: 天気(日本気象学会機関誌) Volume: 57 Pages: 423-425
• [Journal Article] 数値モデルから見た1970年前後の黒潮続流域から親潮域の変動 (2010)
  • Author(s): 野中正見,田口文明,佐々木英治
  • Journal Title: 月刊海洋 Volume: 42 Pages: 404-413
• [Journal Article] Influences of the Kuroshio/Oyashio Extensions on air-sea heat exchanges and storm track activity as revealed in regional atmospheric model simulations for the 2003/4 cold season (2009)
  • Author(s): Bunmei Taguchi, Hisashi Nakamura, Masami Nonaka, Shang-Ping Xie
  • Journal Title: Journal of Climate Volume: 22 Pages: 6536-6560
  • Peer Reviewed
• [Journal Article] Air-sea heat exchanges characteristic to a prominent midlatitude oceanic front in the South Indian Ocean as simulated in a high-resolution coupled GCM (2009)
  • Author(s): Masami Nonaka, Hisashi Nakamura, Bunmei Taguchi, Nobumasa Komori
  • Journal Title: Journal of Climate Volume: 22 Pages: 6515-6535
  • Peer Reviewed
• [Journal Article] North Pacific Gyre oscillation synchronizes climate variability in the eastern and western boundary current systems (2009)
  • Author(s): Lina Ceballos
  • Journal Title: Journal of Climate Volume: 22 Pages: 5163-5174
  • Peer Reviewed
• [Presentation] 北太平洋亜寒帯前線帯の十年規模変動:変動機構と大気応答 (2012)
  • Author(s): 田口文明
  • Organizer: 2012年度日本海洋学会春季大会
  • Place of Presentation: 筑波大学,茨城県つくば市
  • Year and Date: 2012-03-30
• [Presentation] Propagation features of decadal-scale subsurface signals in the North Pacific Ocean (2012)
  • Author(s): Bunmei Taguchi
  • Organizer: 2012 Ocean Science Meeting
  • Place of Presentation: Salt Palace Convention Center, Salt Lake City, Utah, USA
  • Year and Date: 2012-02-21
• [Presentation] Deep oceanic zonal jets constrained by fine-scale wind stress curls in the South Pacific Ocean : A high-resolution coupled GCM study (2011)
  • Author(s): Bunmei Taguchi
  • Organizer: 2011 AGU Fall Meeting
  • Place of Presentation: Moscone Convention Center, San Francisco, California, USA
  • Year and Date: 2011-12-08
• [Presentation] 中緯度海洋前線帯における表層貯熱量、海面水温と海面熱flux変動 (2011)
  • Author(s): 野中正見
  • Organizer: 日本気象学会2011年度秋季大会
  • Place of Presentation: 名古屋大学,愛知県名古屋市
  • Year and Date: 2011-11-18
• [Presentation] Decadal variability of the Kuroshio/Oyashio Extension fronts, their atmospheric influences, and implications to prediction (2011)
  • Author(s): Bunmei Taguchi
  • Organizer: PICES 2011 Annual Meeting
  • Place of Presentation: Official Reception House, Khabarovsk, Russia
  • Year and Date: 2011-10-19
• [Presentation] Propagation features of decadal-scale subsurface signals in the North Pacific Ocean (2011)
  • Author(s): 田口文明
  • Organizer: 2011年度日本海洋学会秋季大会
  • Place of Presentation: 九州大学,福岡県春日市
  • Year and Date: 2011-09-28
• [Presentation] Seasonal evolutions of atmospheric response to decadal SST anomalies in the North Pacific subarctic frontal zone : Observations and a coupled model simulation (2011)
  • Author(s): Bunmei Taguchi
  • Organizer: XXV IUGG General Assembly
  • Place of Presentation: Melbourne Convention & Exhibition Centre, Melbourne, Australia
  • Year and Date: 2011-07-01
• [Presentation] Interannual to decadal variations in the Kuroshio-Oyashio Extension region in an eddy-resolving OGCM (2011)
  • Author(s): Masami Nonaka
  • Organizer: XXV International Union of Geodesy and Geophysics(IUGG) General Assembly
  • Place of Presentation: Melbourne Convention & Exhi
  • Year and Date: 2011-06-30
• [Presentation] 北太平洋亜寒帯前線の十年規模変動に対する大気応答の季節性 (2011)
  • Author(s): 田口文明
  • Organizer: 日本気象学会2011年度春季大会
  • Place of Presentation: 国立オリンピック記念青少年総合センター,東京都渋谷区
  • Year and Date: 2011-05-20
• [Presentation] Decadal SST anomalies confined to the North Pacific subarctic frontal zone and their atmospheric influences (2010)
  • Author(s): Bunmei Taguchi
  • Organizer: CLIVAR WGOMD-GSOP workshop on Decadal Variability, Predictability, and Prediction : Understanding the Role of the Ocean
  • Place of Presentation: Boulder, Colorado, USA
  • Year and Date: 2010-09-21
• [Presentation] 風応力カールの微細な構造で強制された海洋ジェット高解像度大気海洋結合モデルによる研究 (2010)
  • Author(s): 田口文明
  • Organizer: 2010年度日本海洋学会秋季大会
  • Place of Presentation: 東京農業大学オホーツクキャンパス,北海道網走市
  • Year and Date: 2010-09-07
• [Presentation] 北太平洋における表層貯熱量と海面水温の経年・十年規模変動の相関 (2010)
  • Author(s): 野中正見
  • Organizer: 2010年度日本海洋学会秋季大会
  • Place of Presentation: 東京農業大学オホーツクキャンパス,北海道網走市
  • Year and Date: 2010-09-07
• [Presentation] Atmospheric response to decadal SST anomalies confined within the North Pacific subarcticfrontal zone : observations and a coupled model simulation (2010)
  • Author(s): Bunmei Taguchi
  • Organizer: 2010 Ocean Science Meeting
  • Place of Presentation: Oregon Convention Center, Portland, Oregon, USA
  • Year and Date: 2010-02-24
• [Presentation] 北太平洋亜寒帯前線域に集中する十年規模海面水温偏差とその大気への影響-中解像度大気海洋結合モデルによる研究- (2009)
  • Author(s): 田口文明
  • Organizer: 2009年度日本気象学会秋季大会
  • Place of Presentation: アクロス福岡、福岡
  • Year and Date: 2009-11-25
• [Presentation] Decadal variability of Kuroshio/Oyashio Extensions and their atmospheric influences (2009)
  • Author(s): Bunmei Taguchi
  • Organizer: PICES Annual meeting
  • Place of Presentation: International Convention center, Jeju, Korea
  • Year and Date: 2009-10-29
• [Presentation] 北太平洋亜寒帯前線域に集中する十年規模海面水温偏差とその大気への影響-中解像度大気海洋結合モデルによる研究- (2009)
  • Author(s): 田口文明
  • Organizer: 2009年度日本海洋学会秋季大会
  • Place of Presentation: 京都大学、京都
  • Year and Date: 2009-09-26
• [Presentation] Influences of the Kuroshio/Oyashio Extensions on air. sea heat exchanges and storm track activity as revealed in regional atmospheric model simulations for the 2003/4 cold season (2009)
  • Author(s): Bunmei Taguchi
  • Organizer: MOCA-09(IAMAS-IAPSO-IACS 2009 Joint Assembly
  • Place of Presentation: Montreal Convention Center, Montreal, Canada
  • Year and Date: 2009-07-21
• [Remarks] (1)田口文明, Co-convener for the special session "Beta-Plane Dynamics : Jets, Eddies, Waves, and Plumes", AGU Fall Meeting 2011, San Francisco CA, December 2011
• [Remarks] (2)田口文明,海洋研究開発機構横浜研究所施設一般公開「サイエンスカフェ」「気候を変動させる海と大気の交差点を大気海洋シミュレーションで探る」(平成23年11月26日)
• [Remarks] (3)田口文明:北太平洋海洋科学機構Working Group-27北太平洋気候変動・変化作業部会委員(平成23年6月現在)