Details of the Researcher

PHOTO

Imei Shiya
Section
Graduate School of Science
Job title
Associate Professor
Degree

Professional Memberships 3

  • 日本機械学会

  • 日本流体力学学会

  • 日本気象学会

Research Areas 1

  • Natural sciences / Atmospheric and hydrospheric science / Meteorology

Awards 1

  1. 流体力学学会竜門賞

    2002/07 日本流体力学学会 回転2球間クエット流におけるスパイラルTG(Taylor-Gtler)渦の構造と形成の解明

Papers 41

  1. Toward Improved Forecasts of Sea-Breeze Horizontal Convective Rolls at Super High Resolutions. Part I: Configuration and Verification of a Down-Scaling Simulation System (DS3) Peer-reviewed

    Guixing Chen, Xinyue Zhu, Weiming Sha, Toshiki Iwasaki, Hiromu Seko, Kazuo Saito, Hironori Iwai, Shoken Ishii

    MONTHLY WEATHER REVIEW 143 (5) 1849-1872 2015/05

    DOI: 10.1175/MWR-D-14-00212.1  

    ISSN: 0027-0644

    eISSN: 1520-0493

  2. Toward Improved Forecasts of Sea-Breeze Horizontal Convective Rolls at Super High Resolutions. Part II: The Impacts of Land Use and Buildings Peer-reviewed

    Guixing Chen, Xinyue Zhu, Weiming Sha, Toshiki Iwasaki, Hiromu Seko, Kazuo Saito, Hironori Iwai, Shoken Ishii

    MONTHLY WEATHER REVIEW 143 (5) 1873-1894 2015/05

    DOI: 10.1175/MWR-D-14-00230.1  

    ISSN: 0027-0644

    eISSN: 1520-0493

  3. Evaluation of the Warm-Season Diurnal Variability over East Asia in Recent Reanalyses JRA-55, ERA-Interim, NCEP CFSR, and NASA MERRA Peer-reviewed

    Guixing Chen, Toshiki Iwasaki, Huiling Qin, Weiming Sha

    JOURNAL OF CLIMATE 27 (14) 5517-5537 2014/07

    DOI: 10.1175/JCLI-D-14-00005.1  

    ISSN: 0894-8755

    eISSN: 1520-0442

  4. Convective Instability Associated with the Eastward-Propagating Rainfall Episodes over Eastern China during the Warm Season Peer-reviewed

    Guixing Chen, Ryuhei Yoshida, Weiming Sha, Toshiki Iwasaki, Huiling Qin

    JOURNAL OF CLIMATE 27 (6) 2331-2339 2014/03

    DOI: 10.1175/JCLI-D-13-00443.1  

    ISSN: 0894-8755

    eISSN: 1520-0442

  5. An Ensemble Downscaling Prediction Experiment for Medium-Range Forecast of the Daily Mean Surface Temperature Distribution over Northeastern Japan during Summer Peer-reviewed

    Shin Fukui, Toshiki Iwasaki, Weiming Sha

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 92 (6) 505-517 2014

    DOI: 10.2151/jmsj.2014-601  

    ISSN: 0026-1165

    eISSN: 2186-9057

  6. The role of rapid urbanization in surface warming over eastern China Peer-reviewed

    Xinyue Zhu, Guixing Chen, Weiming Sha, Toshiki Iwasaki, Weibiao Li, Zhiping Wen

    INTERNATIONAL JOURNAL OF REMOTE SENSING 35 (24) 8295-8308 2014

    DOI: 10.1080/01431161.2014.985397  

    ISSN: 0143-1161

    eISSN: 1366-5901

  7. Influence of summer monsoon dinural cycle on moisture transport and precipitation over China Peer-reviewed

    Chen, G, W.Sha, M.Sawada, T.Iwasaki

    J. Geophys. Res 118 1-15 2013/02

  8. Diurnal variation of rainfall in the Yangtze River Valley during the spring-summer transition from TRMM measurements. Peer-reviewed

    Chen, G, W. Sha, T. Iwasaki, K.Ueno

    J. Geophys. Res. 117 (1029) 1-14 2012/07

  9. Transient Downslope Winds under the Influence of Stationary Lee Waves from the Zao Mountain Range Peer-reviewed

    Masahiro Sawada, Toshiki Iwasaki, Weiming Sha, Takeshi Yamazaki, Hironori Iwai, Shoken Ishii, Kohei Mizutani, Toshikazu Itabe

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 90 (1) 79-100 2012/02

    DOI: 10.2151/jmsj.2012-105  

    ISSN: 0026-1165

    eISSN: 2186-9057

  10. Urbanization signatures in strong versus weak precipitation over the Pearl River Delta metropolitan regions of China Peer-reviewed

    Weibiao Li, Sheng Chen, Guixing Chen, Weimin Sha, Cong Luo, Yerong Feng, Zhiping Wen, Baomin Wang

    ENVIRONMENTAL RESEARCH LETTERS 6 (3) 60-69 2011/07

    DOI: 10.1088/1748-9326/6/3/034020  

    ISSN: 1748-9326

  11. Low-Level Easterly Winds Blowing through the Tsugaru Strait, Japan. Part I: Case Study and Statistical Characteristics Based on Observations Peer-reviewed

    Teruhisa Shimada, Masahiro Sawada, Weiming Sha, Hiroshi Kawamura

    MONTHLY WEATHER REVIEW 138 (10) 3806-3821 2010/10

    DOI: 10.1175/2010MWR3354.1  

    ISSN: 0027-0644

  12. The temporal evolution and spatial structure of the local easterly wind “Kiyokawa-dashi” in Japan II: Numerical simulation Peer-reviewed

    Sasaki,K, M.Sawada, S.Ishii, H.Kanno, K.Mizutani, T.Aoki, T.Itabe, D.Matsushima, W.Sha, A.Noda, M.Ujie, Y.Matusura, T.Iwasaki

    J. Meteor. Soc. Japan 88 (2) 2010/04

  13. Doppler lidar observation study on the horizontal turbulent structures in the internal boundary layer Peer-reviewed

    小田遼子, 岩井宏徳, 村山泰啓, 石井昌憲, 水谷耕平, 板部敏和, 常松展充, 山田泉, 又吉直樹, 松島大, 余偉明, 山崎剛, 岩崎俊樹

    水工学論文集 54 2010/02

  14. Diurnal variation of precipitation over southeastern China: 2. Impact of the diurnal monsoon variability Peer-reviewed

    Guixing Chen, Weiming Sha, Toshiki Iwasaki

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 114 2009/11

    DOI: 10.1029/2009JD012181  

    ISSN: 2169-897X

    eISSN: 2169-8996

  15. Diurnal variation of precipitation over southeastern China: Spatial distribution and its seasonality Peer-reviewed

    Guixing Chen, Weiming Sha, Toshiki Iwasaki

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 114 2009/07

    DOI: 10.1029/2008JD011103  

    ISSN: 2169-897X

    eISSN: 2169-8996

  16. Dual-doppler lidar observation of horizontal rolls and near-surface streaks Peer-reviewed

    Iwai,H, S.Ishii, N.Tsunematsu, K.Mizutani, Y.Murayama, T.Itabe, I.Yamada, N.Matayoshi, D.Matsushima, W.Sha, T.Yamazaki, T.Iwasaki

    Geophysical Research Letter 33 1-5 2008/09

  17. Transportation of water vapor into the Tibetan Plateau in the case of a passing synoptic-scale trough Peer-reviewed

    Shiori Sugimoto, Kenichi Ueno, Weiming Sha

    Journal of the Meteorological Society of Japan 86 (6) 935-949 2008

    DOI: 10.2151/jmsj.86.935  

    ISSN: 0026-1165

  18. Temporal evolution and spatial structure of the local easterly wind "Kiyokawa-dashi" in Japan part I: Coherent Doppler lidar observations Peer-reviewed

    Shoken Ishii, Kaori Sasaki, Kohei Mizutani, Tetsuo Aoki, Toshikazu Itabe, Hiromitsu Kanno, Dai Matsushima, Weiming Sha, Akira T. Noda, Masahiro Sawada, Masashi Ujiie, Yosuke Matsuura, Toshiki Iwasaki

    Journal of the Meteorological Society of Japan 85 (6) 797-813 2007/12

    DOI: 10.2151/jmsj.85.797  

    ISSN: 0026-1165

  19. コヒーレントドップラーライダーによる清川ダシ観測 Peer-reviewed

    石井昌憲, 水谷耕平, 青木哲郎, 佐々木華織, 菅野洋光, 岩崎俊樹, 余偉明, 松島大, 野田暁, 沢田雅洋, 氏家将志, 松浦洋介

    天気 52 (5) 3-4 2005/12

  20. Relaminarization phenomena and external-disturbance effects in spherical Couette flow Peer-reviewed

    K Nakabayashi, WM Sha, Y Tsuchida

    JOURNAL OF FLUID MECHANICS 534 327-350 2005/07

    DOI: 10.1017/S0022112005004659  

    ISSN: 0022-1120

  21. Observational evidence of the spatial distribution of wind speed and the vertical structure of the local easterly strong wind "Kiyokawa-dashi" on the Shonai Plain, Yamagata Peer-reviewed

    Sasaki,K, H.Kanno, K.Yokoyama, D.Matsushima, M.MOriyama, K.Fukabori, S.Sha

    Tenki 51 (12) 15-28 2004/12/31

  22. A numerical study on the nocturnal frontogenesis of the sea-breeze front Peer-reviewed

    Weiming Sha, Satoshi Ogawa, Toshiki Iwasaki, Zifa Wang

    Journal of the Meteorological Society of Japan 82 (2) 817-823 2004/04

    DOI: 10.2151/jmsj.2004.817  

    ISSN: 0026-1165

  23. A numerical study on the interaction of a sea-breeze front with convective cells in the daytime boundary layer Peer-reviewed

    Satoshi Ogawa, Weiming Sha, Toshiki Iwasaki, Zifa Wang

    Journal of the Meteorological Society of Japan 81 (4) 635-651 2003/08

    DOI: 10.2151/jmsj.81.635  

    ISSN: 0026-1165

  24. Disappearance phenomena of velocity fluctuation in the transition of spherical Couette flow Peer-reviewed

    Koichi Nakabayashi, Weiming Sha, Naofumi Adachi, Yoichi Tsuchida

    Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B 68 (668) 972-978 2002

    Publisher: Japan Society of Mechanical Engineers

    DOI: 10.1299/kikaib.68.972  

    ISSN: 0387-5016

  25. Reverse-bifurcation in the transition process of spherical Couette flow Peer-reviewed

    Koichi Nakabayashi, Weiming Sha, Yoichi Tsuchida, Satoshi Sugawara

    Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B 68 (668) 979-986 2002

    Publisher: Japan Society of Mechanical Engineers

    DOI: 10.1299/kikaib.68.979  

    ISSN: 0387-5016

  26. On The structure and formation mechanism of the spiral Taylor-Gotlax vortices in spherical Couette flow Peer-reviewed

    W. Sha, K. Nakabayashi

    J. Fluid Mech. 431 323-345 2001

    DOI: 10.1017/S0022112000003128  

  27. Behaviors of volatile inorganic components in urban aerosols Peer-reviewed

    H Ueda, T Takemoto, YP Kim, WM Sha

    ATMOSPHERIC ENVIRONMENT 34 (3) 353-361 2000

    DOI: 10.1016/S1352-2310(99)00383-0  

    ISSN: 1352-2310

  28. Numerical modeling of pollutant transport and chemistry during a high-ozone event in North Taiwan Peer-reviewed

    Z.Wang, W.Sha, H.Ueda

    Tellus. 52B 1189-1205 2000

  29. The linear stability of thermally stratified rotating channel flow Peer-reviewed

    WM Sha, K Tsuchiya, K Nakabayashi

    PHYSICS OF FLUIDS 11 (2) 439-449 1999/02

    DOI: 10.1063/1.869870  

    ISSN: 1070-6631

  30. Numerical study on flow pass of a three-dimensional obstacle under a strong stratification condition Peer-reviewed

    W Sha, K Nakabayashi, H Ueda

    JOURNAL OF APPLIED METEOROLOGY 37 (10) 1047-1054 1998/10

    DOI: 10.1175/1520-0450(1998)037<1047:NSOFPO>2.0.CO;2  

    ISSN: 0894-8763

  31. Direct numerical simulation on spherical Couette flow based on a decoupling method with second-order accuracy in time and space Peer-reviewed

    W.Sha, K.Nakabayashi

    Transactions of the Japan Society of Mechanical Engineering 064 (619) 656-661 1998/03

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/kikaib.64.656  

    ISSN: 0387-5016

    More details Close

    A finite-difference method for solving three-dimensional, time-dependent incompressible Navier-Stokes equations in spherical polar coordinates is presented. A new algorithm, which is second-order accurate in time and space, is considered, and decoupling between the velocity and the pressure is achieved by this algorithm. Further, the numerical method is used to simulate the spherical Couette flow between two concentric spheres with the inner one rotating. A comparison of the numerical results with the available experimental measurements was made. It is demonstrated that the numerical code is valid for solving three-dimensional, unsteady incompressible Navier-Stokes equations in spherical polar coordinates.

  32. Computation of 3-D stratified turbulent flow around a mountain Peer-reviewed

    WM Sha

    ENVIRONMENTAL MODELLING & SOFTWARE 13 (3-4) 309-315 1998

    DOI: 10.1016/S1364-8152(98)00032-2  

    ISSN: 1364-8152

  33. An Accurate Second-order Appronimation Factorigation Method for Time-clependent incompressible Narier-Stokes Fquations in spherieal Polar Coordinates Peer-reviewed

    W. Sha, K. Nakabayashi, H. Ueda

    J. Comput. Phys. 142 47-66 1998

  34. Transient turbulence structure in the unstable boundary layer under the condition of step cooling from below Peer-reviewed

    K Fukui, H Ueda, W Sha, K Uehara

    ATMOSPHERIC ENVIRONMENT 30 (16) 2811-2819 1996/08

    DOI: 10.1016/1352-2310(96)00005-2  

    ISSN: 1352-2310

    eISSN: 1873-2844

  35. A numerical experiment on the Adelaide gully wind of South Australia Peer-reviewed

    W Sha, W Grace, W Physick

    AUSTRALIAN METEOROLOGICAL MAGAZINE 45 (1) 19-40 1996/03

    ISSN: 0004-9743

  36. Numerical experiments on the flow around a three-dimensional obstacle in strong stratified temperature condition. Peer-reviewed

    W.Sha, K.Nakabayashi, H.Ueda

    Nagare 14 297-305 1995/02/01

  37. Investigations on the Adelaide Gully Wind of South Australia. Peer-reviewed

    W. Sha, W. Physick, W. Grace

    Math. Compute. Modeling 21 (9) 119-123 1995

  38. Simulations and visualization with supercomputer on large-scale sea/land breezes Peer-reviewed

    W.Sha, K.Kuwahara

    Math. Semi. Mag. 2 2-12 1993/11/01

  39. A numerical study of nocturnal sea breeze : profront Gravity waves in the conpensating flow and inland penetration of the Sea-breese cutoff votex Peer-reviewed

    W. Sha, T. Kawamura, H.Ueda

    J. Atmos. Sci. 50 (8) 1076-1088 1993

    DOI: 10.1175/1520-0469(1993)050<1076:ANSONS>2.0.CO;2  

  40. Numerical study on the detalled stracture and dynamics of land / sea breezes as a gravity current Peer-reviewed

    H.Ueda, W.Sha

    Air pollulion Modeling and Application 6 143-151 1992

  41. A numerical study sea / land breezes as a gravity current : Kelvin-Helmholty biUows and inland penetration of the sea-breeze front. Peer-reviewed

    W. Sha, T. Kawamura, H.Ueda

    J. Atmos. Sci. 48 1649-1665 1991

    DOI: 10.1175/1520-0469(1991)048<1649:ANSOSB>2.0.CO;2  

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Misc. 13

  1. Development and application of an urban meteorological numerical model in Cartesian coordinate(2)

    Sha,W

    CGER'S supercomputer activity report 14-2005 107-109 2007/07

    Publisher: CGER/NIES

  2. 第8回非静力学モデルに関するワークショップの報告

    斉藤和雄, 岩崎俊樹, 佐藤正樹, 本田有機, 加藤輝之, 栗原和夫, 余偉明, 新野宏

    天気 54 (3) 255-260 2007/03

    Publisher: 日本気象学会

    ISSN: 0546-0921

  3. Development and application of an urban meteorological numerical model in Cartesian coordinate

    Sha,W

    CGER/NIES 13-2004 115-118 2006/07

  4. Development of an urban meteorological numerical model in Cartesian

    Sha,W

    CGER'S supercomputer activity report 12-2003 107-111 2005/12

    Publisher: CGER/NIES

  5. Development of a high-resolution local atmospheric numerical model in Cartesian coordinate

    Sha,W

    CGER’S supercomputer activity report 11 85-89 2004/12/01

  6. 直線直角座標系における大気局地数値モデルの開発

    余偉明, 沢田雅洋, 岩崎俊樹

    東北大学情報シナジーセンター大規模科学計算システム広報SENAC 37 (3) 17-28 2004/09/01

  7. 第5回非静力学モデリング短期数値予報国際ワークショップ参加報告

    加藤輝之, 熊谷幸浩, 佐藤正樹, 富田浩文, 余偉明, 本田有機, 安永数明, 佐藤正樹

    天気 51 (3) 169-174 2004/03/01

  8. 第4回非静力学モデルに関するワークショップの報告

    里村雄彦, 岩崎俊樹, 佐藤正樹, 加藤輝之, 重尚一, 余偉明

    天気 50 (4) 259-261 2003/04/01

    Publisher: 日本気象学会

    ISSN: 0546-0921

  9. Numerical simulations of the eddies generated by a large mountain

    穂積祐, 植田洋匡, 余偉明

    京都大学防災研究所年報 46 (46) 347-359 2003/04/01

    Publisher: 京都大学防災研究所

    ISSN: 0386-412X

  10. Development of a dynamical core for the new atmospheric meso-scale numerical model

    Sha,W

    CGER’S supercomputer activity report 10 97-106 2002/12/01

  11. 次世代の大気局地数値モデルの動力学的中核部分の開発

    余偉明

    月刊海洋 2 107-112 2002/11/01

  12. 回転2球間クエット流におけるスパイラルTG(Taylor-Görtler)渦の構造と形成について、日本流体力学学会竜門賞記念解説

    余偉明

    ながれ 21 (3) 206-212 2002/06/01

    Publisher: The Japan Society of Fluid Mechanics

    DOI: 10.11426/nagare1982.21.206  

    ISSN: 0286-3154

  13. 第4回非静力学モデリング短期数値予報国際ワークショップ参加報告

    室井ちあし, 里村雄彦, 余偉明, 佐藤正樹, 富田浩文, 那須野智江, 石田純一

    天気 49 (3) 321-325 2002/05/01

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Books and Other Publications 3

  1. 気象研究ノート 第219号 ラージ・エディ・シミュレーションの気象への応用と検証

    余偉明

    日本気象学会 2008/11/12

  2. Representation of complex topography in cartesian coordinate atmospheric meso-scale numerical model

    W.Sha, H.Ueda

    2002

  3. Vortical structures and velocity fluctuations of spiral and wavy vortices in spherical couette flow

    K.Nakabayashoi, W.Sha

    2000

Research Projects 2

  1. Numerical study on general atmospheric circulation Competitive

    1999/04 -

  2. Numerical study and modeling on meso-scale atmospheric circulation Competitive

    1999/04 -