Research Interests

• physical oceanography
• global wave dynamics (Rossby wave, equatorial wave, mesoscale eddies)
• air-sea boundary layer (surface wave)
• coupled numerical simulation for coastal environment (CReSS-NHOES)
  

Education

• 2003 - Ph.D. (Earth and Planetary Science), The University of Tokyo, Japan
Dissertation: A Numerical Study on Oceanic Lens Formation with Application to Meddies
• 1998 - M.S. (Earth and Planetary Physics), The University of Tokyo, Japan
• 1996 - B.S. (Mathematics), Nagoya University, Japan

• Editor's Award, from American Meteorological Society, 2019
• Editor's Citation for Excellence in Refereeing from American Geophysical Union, 2014
• The Ryumon Medal from Japan Society of Fluid Mechanics, 2004

• Postdoctoral Fellowships for Foreign Researcher (Standard, Short-term, Summer-program) from JSPS
• Research Scientist at ISEE, Nagoya Univ.
• Japan-Asia Youth Exchange Program in Science from JST

• Joint Research Program at ISEE, Nagoya Univ.

Professional Experience

• Associate Professor, ISEE in Nagoya Univ., Jan. 2016 -
  
• Senior Research Scientist, Application Laboratory in JAMSTEC, Apr. 2010 - Dec. 2015
  
• Research Scientist, RIGC in JAMSTEC, Apr. 2005 - Mar. 2010
  
• Visiting Research Scholar, IPRC in Univ. of Hawaii, USA, Feb. 2007 - Jan. 2009
• Postdoctoral Fellow for Research Abroad, JSPS, Feb. 2007 - Jan. 2009
• Postdoctoral Fellow, FRCGC in JAMSTEC, Apr. 2003 - Mar. 2005
• Research Assistant, FRCGC in NASDA, Apr. 2001 - Mar. 2003
• Research Scholar, JSPS, Apr. 1998 - Mar. 2001
  

     RIGC: Research Institute for Global Change (JAMSTEC)
     FRCGC: Frontier Research Center for Global Change (JAMSTEC/NASDA)

• Aiki, H., 2013: Development of Lagrangian mean theories for baroclinic eddies and wind waves in the ocean, Lecture Note for the 2013 Summer Seminar in Geophysical Fluid Dynamics, 119 pp. (in Japanese)
  

• Aiki, H., M. K. Yoshioka, M. Kato, A. Morimoto, T. Shinoda, K. Tsuboki, 2015: A coupled atmosphere-ocean-surface-wave modeling system for understanding air-sea interactions under tropical cyclone conditions, Bulletin on Coastal Oceanography, 52, 139-148. (in Japanese)

• Aiki, H., R. J. Greatbatch, and M. Claus, 2017: Towards a seamlessly diagnosable expression for the energy flux associated with both equatorial and mid-latitude waves, Prog. Earth Planet. Sci., 4, DOI:10.1186/s40645-017-0121-1.
  
• Aiki, H., X. Zhai, and R. J. Greatbatch, 2016: Energetics of the global ocean: the role of mesoscale eddies, The Indo-Pacific Climate Variability and Predictability (edited by S. K. Behera and T. Yamagata), World Scientific Publisher, Chapter 4, 109-134, doi:10.1142/9789814696623_0004.
  
• Aiki, H., K. Takaya, and R. J. Greatbatch, 2015: A divergence-form wave-induced pressure inherent in the extension of the Eliassen-Palm theory to a three-dimensional framework for all waves at all latitudes, J. Atmos. Sci., 72, 2822-2849.
  
• Aiki, H., and R. J. Greatbatch, 2014: A new expression for the form stress term in the vertically Lagrangian mean framework for the effect of surface waves on the upper ocean circulation, J. Phys. Oceanogr., 44, 3-23.
• Aiki, H., and R. J. Greatbatch, 2013: The vertical structure of the surface wave radiation stress for circulation over a sloping bottom as given by thickness-weighted-mean theory, J. Phys. Oceanogr., 43, 149-164.
• Hua, B. L., C. Menesguen, S. L. Gentil, R. Schopp, B. Marsset, and H. Aiki, 2013: Layering and turbulence surrounding an anticyclonic oceanic vortex: in situ observations and quasi-geostrophic numerical simulations, J. Fluid Mech., 731, 418-442.
  
• Aiki, H., and R. J. Greatbatch, 2012: Thickness-weighted-mean theory for the effect of surface gravity waves on mean flows in the upper ocean, J. Phys. Oceanogr., 42, 725-747.
• Aiki, H., K. J. Richards, and H. Sakuma, 2011: Maintenance of the mean kinetic energy in the global ocean by the barotropic and baroclinic energy routes: the roles of JEBAR and the Ekman dynamics, Ocean Dynamics, 61, 675-700.
  
• Aiki, H., J. P. Matthews, and K.G. Lamb, 2011: Modeling and energetics of tidally generated wave trains in the Lombok Strait: Impact of the Indonesian Throughflow, J. Geophys. Res.-Oceans, 116, C03023.
• Matthews, J.P., H. Aiki, S. Masuda, T. Awaji, and Y. Ishikawa, 2011: Monsoon regulation of Lombok Strait internal waves, J. Geophys. Res.-Oceans, 116, C05007.
• Aiki, H., and K. J. Richards, 2008: Energetics of the global ocean: The role of layer-thickness form drag, J. Phys. Oceanogr., 38, 1845-1869.
• Aiki, H., K. Takahashi, and T. Yamagata, 2006: The Red Sea outflow regulated by the Indian monsoon, Cont. Shelf Res., 26, 1448-1468.
• Aiki, H., and T. Yamagata, 2006: Energetics of the layer-thickness form drag based on an integral identity, Ocean Science, 2, 161-171.
• Jacobson, T., and H. Aiki, 2006: An exact energy for TRM theory. J. Phys. Oceanogr., 36, 558-564.
• Aiki, H., T. Jacobson, and T. Yamagata, 2004: Parameterizing ocean eddy transports from surface to bottom, Geophys. Res. Lett., 31, L19302.
• Aiki, H., and T. Yamagata, 2004: A numerical study on the successive formation of Meddy-like lenses, J. Geophys. Res.-Oceans, 109, C06020.
• Aiki, H., and T. Yamagata, 2000: Successive formation of planetary lenses in an intermediate layer, Geophysical and Astrophysical Fluid Dynamics, 91, 1-29.

1. Three-dimensional view for surface gravity waves
• JONSWAP spectrum
2. Lagrangian coordinates associated with surface gravity waves
• 3D Lagrangian coordinates (Lagrange, 1778)
• 3D semi-Lagrangian coordinates (Andrews and McIntyre, 1978)
• Vertically semi-Lagrangian horizontally Eulerian coordinates (Aiki and Greatbatch, 2012, 2013, 2014)
3. Tidal internal waves in Lombok Strait, Indonesia (dx=140m)
• Nonhydrostatic effects generate the trains of internal solitary-like waves
• The seasonal Indonesian Throughflow modulates the direction of wave radiation
  
4. Typhoon Choiwan 2009 crossing Ogasawara islands (dx=1km)
• Nonhydrostatic effects generate the trains of internal solitary-like waves
5. Typhoon Hai-Tang 2005 crossing Taiwan (dx=4km)
• Sea Surface Temperature, Sub Surface Temperature for 5 days from 2005Jul15 0:00 UTC
• Current speed at sea surface, 50 m depth, 100 m depth, 200 m depth
6. Red Sea outflow (dx=1km-100km)
• Patches of outflow water in the gulf of Aden are characterized by anticyclonic relative vorticity

• hsvcolor.gs : Converting from HSV ( hue-saturation-value) format to RGB (red-green-blue) format
  
• hsvcolor-auto.gs : Setting various color palettes in HSV
  
• Result of the above script