Publication List

2011

• Ito, K., Y. Ishikawa, Y. Miyamoto, and T. Awaji, 2011: Short-timescale process in a mature hurricane as a response to sea surface fluctuations., accepted by J. Atm. Sci.,

2010

• Ito, K., Y. Ishikawa, and T. Awaji, 2010: Specifying air-sea exchange coefficients in the high-wind regime of a mature tropical cyclone by an adjoint data assimilation method, SOLA, vol.6, 13-16, doi:10.2151/sola.2010-004.
• Tomita, H., M. Kubota, M. F. Cronin, S. Iwasaki, M. Konda, and H. Ichikawa, 2010: An assesment of surface heat fluxes from J-OFURO at the KEO and JKEO sites, J. Geophys. Res., vol. 115, C03018, doi:10.1029/2009JC005545.
• Konda, M., H. Ichikawa, H. Tomita, M. F. Cronin, 2010: Surface heat flux variations across the Kuroshio Extension as observed by surface flux buoys, J. Climate, vol. 23(19), 5206--5221.

2009

• Sakamoto, K., K. Akitomo, 2009: The tidally induced bottom boundary layer in the rotating frame: development of the turbulent mixed layer under stratification. J. Fluid Mech., vol. 619 , 235 - 259.
• Konda, M., H. Ichikawa, H. Tomita ,2009: Wind speed and latent heat flux retrieved by simultaneous observation of multiple geophysical parameters by AMSR-E, J. Remote Sens. Soc. Japan,vol. 29(1), 191 -198.
• Masuda, S., T. Awaji, T. Toyoda, Y. Shikama, Y. Ishikawa, 2009: Temporal evolution of the equatorial thermocline associated with the 1991-2006 ENSO. J. Geophys. Res., vol. 114, C03015, doi:10.1029/2008JC004953.
• Mochizuki T., T. Awaji, N. Sugiura, 2009:Possible oceanic feedback in the extratropics in relation to the North Atlantic SST tripole, Geophys. Res. Let., vol. 36, L05710.
• Akitomo, K., K. Tanaka, M. Kumagai, and C. Jiao, 2009: Annual cycle of circulations in Lake Biwa, part 1: model validation. Limnology, vol. 10, 105-118, doi:10.1007/s10201-009-0267-7.
• Akitomo, K., K. Tanaka, M. Kumagai, and C. Jiao, 2009: Annual cycle of circulations in Lake Biwa, part 2: mechanisms. Limnology, vol. 10, 119-129, doi:10.1007/s10201-009-0268-6.
• Toyoda, T., S. Masuda, N. Sugiura, T. Mochizuki, H. Igarashi, M. Kamachi, Y. Ishikawa, and T. Awaji, 2009: A possible role for unstable coupled waves afected by resonance between Kelvin waves and seasonal warming in the development of the strong 1997-1998 El Nino. Deep-Sea Res. I., vol. 56, 495-512.
• Ito, K., Y. Naito, and S. Yoden, 2009: Combined effects of QBO and 11-year solar cycle on the winter hemisphere in a stratosphere-troposphere coupled systemM, Geophys. Res. Lett., vol. 36, L11804, doi:10.1029/2008GL037117.
• Nagano, A., K. Ichikawa, H. Ichikawa, M. Konda, and K. Murakami 2009: Synoptic flow structures in the confluence region of the Kuroshio and the Ryukyu Current, J. Geophys. Res., vol. 114, C06007, doi:10.1029/2008JC005213.

2008

• Ando, K., Y. Masumoto, M. Konda, K. Kutsuwada, K. Mizuno, 2008: Report from the Symposium on "Observational studies of climate variability in the Pacific and Indian Oceans - Roles of surface buoy network -, Umi no Kenkyu vol. 17(1), 63-69 (in Japanese).
• Nagano, A., H. Ichikawa, T. Miura, K. Ichikawa, M. Konda, Y. Yoshikawa, K. Obama, K. Murakami, 2008: Reply to comment by Xie-Hua Zhu et al. on "Current system east of the Ryukyu Islands", J. Geophys. Res., vol. 113, C030021, doi:10.1029/2007JC004561.
• Sugiura, N., T. Awaji, S. Masuda, T. Mochizuki, T. Toyoda, T. Miyama, H. Igarashi, Y. Ishikawa, 2008: Development of a four-dimensional variational coupled data assimilation system for enhanced analysis and prediction of seasonal to interannual climate variations. J. Geophys. Res., vol. 113 C10017, doi:1029/2008JC004741.
• Sakamoto, K., K. Akitomo, 2008: The tidally induced bottom boundary layer in a rotating frame: similarity of turbulence. J. Fluid Mech., vol. 615 , 1 - 25.
• Akitomo, K., 2008: Effects of stratification and mesoscale eddies on Kuroshio path variation south of Japan, Deep-Sea Research I, vol. 55, 997-1008.

2007

• Nagano, A. H. Ichikawa, T. Miura, K. Ichikawa, M. Konda, Y. Yoshikawa, K. Obama, K. Murakami, 2007: Current system east of the Ryukyu Islands. J. Geophys. Res., vol. 112, C06009, doi:10.1029/2006JC003917.
• Nagura, M., M Konda, 2007: The Seasonal Development of an SST Anomaly in the Indian Ocean and Its Relationship to ENSO. J. Climate, vol. 20(1), 38 - 52.
• Akitomo, K., 2007:Restriction of convective depth in the Weddell Sea ., Geophys. Res. Let.,, vol. 34(10), L10610

2006

• Sakamoto, K., K. Akitomo, 2006: Instabilities of the tidally induced bottom boundary layer in the rotating frame and their mixing effect. Dyn. Atm. Ocea., vol. 41, 191-211.
• Konda, M., A Shibata, N Ebuchi, K Arai, 2006:A correction of the effect of the relative wind direction on the wind speed derived by Advanced Microwave Scanning Radiometer. J. Oceanography, vol.62(3), 395-404.
• Nakamura T., T Toyoda, Y Ishikawa,T Awaji, 2006: Enhanced Ventilation in the Okhotsk Sea through tidal mixing at the Kuril Straits, Deep Sea Res., vol.53, 425-448.
• Nakamura T., T Toyoda, Y Ishikawa, T Awaji, 2006: Effects of tidal mixing at the Kuril Straits on the North Pacific ventilation: Adjustment of intermediate layer revealed from numerical experiments, J. Geophys.Res., vol.111, C04003, doi:10.1029/2005JC003142.
• Akitomo K., 2006:Thermobaric deep convection, baroclinic instability, and their roles in vertical heat transport around Maud Rise in the Weddell Sea. , J. Geophys. Res., vol 111(9), C09027.

2005

• Nagura, M., M Konda, 2005: The relationship between the interannual variation of the Indian Ocean SST induced by the Indian Monsoon and ENSO. J. Climate, vol. 18(12), 1942 -1956.
• Konda, M., H. Ichikawa, I. -S. Han, X. H Zhu, K Ichikawa 2005: Variability of current structure due to meso-scale eddies on the bottom slope southeast of Okinawa Island. J. Oceanogr., 61, 1089 - 1099.
• Akitomo, K., 2005: Numerical study of baroclinic instability associated with thermobaric deep convection at high latitudes: Idealized cases. Deep-Sea Res.,52(6),937-957.

2004

• Konda, M., A. Shibata, 2004: An experimental approach to correct the microwave rariometer wind speed affected by the change of the brightness temperature due to the relative wind direction. Geophys. Res. Lett., 31 (9), L09302 10.1029/2004GL019487.
• Akitomo, K., M. Kurogi, and M. Kumagai, 2004: Numerical study of a thermally induced gyre system in Lake Biwa. Limnology, 5, 103 - 114, doi: 10.1007/s10201-004-0122-9.
• Nakamura, T., T. Awaji, 2004: Tidally induced diapycnal mixing in the Kuril Straits and its role in water transformation and transport, J. Geophys. Res., 109, C09S07, doi:10.1029/2003JC001850.
• Toyoda, T., T. Awaji, Y. Ishikawa, T. Nakamura, 2004: Preconditioning of winter mixed layer in the formation of North Pacific eastern subtropical mode water, Geophys. Res. Lett., 31, doi:10.1029/2004GL020677.

2003

• Komori, N., T. Awaji, Y. Ishikawa, and T. Kuragano, 2003: Short-range forecast experiments of the Kuroshio path variabilities south of Japan using TOPEX/Poseidon altimetric data, J. Geophys. Res., 108(C1), 3010, DOI 10.1029/2001JC001282.
• Kurogi, M., K.  Akitomo, 2003: Stable paths of the Kuroshio south of Japan determined by the wind stress field. J. Geophys. Res., 108, 3332,doi:10.1029/2003JC001853.
• Yoshikawa, Y., and K.  Akitomo, 2003: Transverse roll convection in horizontal plane Couette flow. J. Fluid Mech., 493, 191–208.
• Masuda, S., T. Awaji, N. Sugiura, Y. Ishikawa, K. Baba, K. Horiuchi, and N. Komori, 2003: Improved estimates of the dynamical state of the North Pacific Ocean from a 4-dimensional variational data assimilation, Geophys. Res. Lett. 30, doi:10.1029/2003GRL017604.
• Awaji, T., S. Masuda, Y. Ishikawa, N. Sugiura, T. Toyoda, and T. Nakamura, 2003: State estimation of the North Pacific Ocean by a four-dimensional variational data assimilation experiment, J. Oceanogr., 59, 931-943.

2002

• Kubota, M., N. Iwasaka, S. Kizu, M. Konda, and K. Kutsuwada, 2002: Japanese Ocean Flux data sets with Use of Remote sensing Observations (J-OFURO). J. Oceanogr., 58 (1), 213–225.
• Konda, M., N. Imasato, and A. Shibata, 2002: Interannual variability of the sea surface temperature in the Indian Ocean in response to the air-sea turbulent heat exchange. Deep-Sea Res. II, 49, 1527 - 1548.. Deep-Sea Res. II, 49 (7-8), 1527–1548.

2001

• Akitomo, K., and M. Kurogi, 2001: Path transition of the Kuroshio due to mesoscale eddies: A two-layer, wind-driven experiment. J. Oceanogr., 57 (6), 735–741.
• Ishikawa, Y., T. Awaji, and N. Komori, 2001: Dynamical initialization for the numerical forecasting of ocean surface circulations using a variational assimilation system. J. Phys. Oceanogr., 31 (1), 75–93.
• Nakamura, T., and T. Awaji, 2001: A growth mechanism for topographic internal waves generated by an oscillatory flow. J. Phys. Oceanogr., 31 (8), 2511–2524.
• Ostrovskii, A., A. Kaneko, A. Stuart-Menteth, K. Takeuchi, T. Yamagata, J.-H. Park, X. H. Zhu, N. Gohda, H. Ichikawa, K. Ichikawa, A. Isobe, M. Konda, and S.-I. Umatani, 2001: Kuroshio Observation Program: Towards real-time monitoring of the Japanese coastal waters. Ocean and Polar Res., 23 (2), 141–160.
• Tanaka, K., and K. Akitomo, 2001: Baroclinic instability of density current along a sloping bottom and the associated transport process. J. Geophys. Res., 106 (C2), 2621–2638.
• Yoshikawa, Y., K. Akitomo, and T. Awaji, 2001: Formation process of intermediate water in baroclinic current under cooling. J. Geophys. Res., 106 (C1), 1033–1051.

2000

• Masuda, S., and K. Akitomo, 2000: Effects of stratification and bottom topography on the Kuroshio path variation south of Japan. Part II: Path transitions in a multiple equilibrium regime. J. Phys. Oceanogr., 30 (6), 1431–1449.
• Masuko, H., K. Arai, N. Ebuchi, M. Konda, M. Kubota, K. Kutsuwada, T. Manabe, A. Mukaida, T. Nakazawa, A. Nomura, A. Shibata, and Y. Tahara, 2000: Evaluation of vector winds observed by NSCAT in the seas around Japan. J. Oceanogr., 56 (5), 495–505.
• Nakamura, T., T. Awaji, T. Hatayama, K. Akitomo, and T. Takizawa, 2000: Tidal exchange through the Kuril Straits. J. Phys. Oceanogr., 30 (7), 1622–1644.
• Nakamura, T., T. Awaji, T. Hatayama, K. Akitomo, T. Takizawa, T. Kono, Y. Kawasaki, and M. Fukasawa, 2000: The generation of large-amplitude unsteady lee waves by subinertial K₁ tidal flow: A possible vertical mixing mechanism in the Kuril Straits. J. Phys. Oceanogr., 30 (7), 1601–1621.
• Tanaka, K., and K. Akitomo, 2000: Density current descending along continental slope and the associated deep water formation: Two-dimensional numerical experiments with a nonhydrostatic model. J. Oceanogr., 56 (2), 117–130.

1999

• Akitomo, K., 1999: Open-ocean deep convection due to thermobaricity, 1, Scaling argument. J. Geophys. Res., 104 (C3), 5225–5234.
• Akitomo, K., 1999: Open-ocean deep convection due to thermobaricity, 2, Numerical experiments. J. Geophys. Res., 104 (C3), 5235–5249.
• Masuda, S., K. Akitomo, and T. Awaji, 1999: Effects of stratification and bottom topography on the Kuroshio path variation south of Japan. Part I: Dependence of the path selection on velocity. J. Phys. Oceanogr., 29 (9), 2419–2432.
• Yoshikawa, Y., T. Awaji, and K. Akitomo, 1999: Formation and circulation processes of intermediate water in the Japan Sea. J. Phys. Oceanogr., 29 (8), 1701–1722.

1998

1997

• Akitomo, K., S. Masuda, and T. Awaji, 1997: Kuroshio path variation south of Japan: Stability of the paths in a multiple equilibrium regime. J. Oceanogr., 53 (2), 129–142.
• Ishikawa, Y., T. Awaji, and K. Akitomo, 1997: Global surface circulation and its kinetic energy distribution derived from drifting buoys. J. Oceanogr., 53 (5), 489–516.

1996

• Akitomo, K., M. Ooi, T. Awaji, and K. Kutsuwada, 1996: Interannual variability of the Kuroshio transport in response to the wind stress field over the North Pacific: Its relation to the path variation south of Japan. J. Geophys. Res., 101 (C6), 14,057–14,071.
• Hatayama, T., T. Awaji, and K. Akitomo, 1996: Tidal current in the Indonesian Seas and their effect on transport and mixing. J. Geophys. Res., 101 (C5), 12,353–12,373.
• Ishikawa, Y., T. Awaji, K. Akitomo, and B. Qiu, 1996: Successive correction of the mean sea surface height by the simultaneous assimilation of drifting buoy and altimetric data. J. Phys. Oceanogr., 26 (11), 2381–2397.
• Konda, M., N. Imasato, and A. Shibata, 1996: A new method to determine near-sea surface air temperature by using satellite data. J. Geophys. Res., 101 (C6), 14,349–14,360.
• Konda, M., N. Imasato, and A. Shibata, 1996: Analysis of the global relationship of biennial variation of sea surface temperature and air-sea heat flux using satellite data. J. Oceanogr., 52 (6), 717–746.
• Miyama, T., T. Awaji, K. Akitomo, and N. Imasato, 1996: A Lagrangian approach to the seasonal variation of salinity in the mixed layer of the Indonesian Seas. J. Geophys. Res., 101 (C5), 12,265–12,285.

1995

• Akitomo, K., T. Awaji, and N. Imasato, 1995: Open ocean deep convection in the Weddell Sea: Two-dimensional numerical experiments with a nonhydrostatic model. Deep-Sea Res., 42 (1), 53–73.
• Akimoto, K., K. Tanaka, T. Awaji, and N. Imasato, 1995: Deep convection in a lake triggered by wind: Two-dimensional numerical experiments with a nonhydrostatic model. J. Oceanogr., 51 (2), 171–185.
• Miyama, T., T. Awaji, K. Akitomo, and N. Imasato, 1995: Study of seasonal transport variations in the Indonesian Seas. J. Geophys. Res., 100 (C10), 20,517–20,541.

Member List / Publication List / Doctoral Thesis