HIROSE Nariaki

Job title	Resercher/The 5th lab./Department of Atmosphere, Ocean, and Earth System Modeling Research
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Personal
Expertise	Physical Oceanography, Data Assimilation
Degree
Publications	Usui, N., N. Hirose, K. Sakamoto, H. Asai, S. Nishikawa, H. Igarashi, Y. Kawakami, K. Aoki, H. Nakano, Y. Ishikawa (2026): Four-dimensional variational ocean reanalysis for the seas around Japan over 60 years (FORA-JPN60):Part I - system configuration and basic performance, J. Oceanogr., Online First Kawakami, Y., N. Hirose, H. Nakano, L. S. Urakawa, K. Aoki, S. Hirahara, and T. Toyoda (2026): Oceanic cool spot formed off Boso Peninsula in the late June 2022, J. Oceanogr., 82, 109–118 Usui, N., N. Hirose, (2025): Interannual to decadal variability of ocean heat content in the Japan Sea: Role of the Tsushima Warm Current and its relation to the Kuroshio Extension variability, J. Clim., 38, 3593–3607 Toyoda, T., N. Hirose, and Coauthors, (2025): Bottom Topography Effect on the Seasonal Mode Generation of the Tsugaru Warm Current, J. Clim., 38(8), 1791-1811 Yamaguchi, M., N. Usui, N. Hirose (2024): Typhoon Intensity Forecasts using TIFS with Pseudo Ocean Coupling, SOLA, 20, 86–91 Hirose, N., N. Usui, K. Sakamoto, N. Kohno, G. Yamanaka (2022): Superposition of coastal-trapped waves and Kuroshio warm water intrusions caused unusually high sea levels around the southern coasts of Japan in early September 1971, J. Oceanogr., 78(6), 475-493. Toyoda, T., K. Sakamoto, N. Usui, N. Hirose, K. Tanaka, T. Katsumata, D. Takahashi, M. Niki, K. Kutsuwada, T. Miyama, H. Nakano, L. S. Urakawa, K. K. Komatsu, Y. Kawakami, G. Yamanaka (2021): Surface-layer circulations in Suruga Bay induced by intrusions of Kuroshio branch water, Frontiers in Marine Science, 8, 721500. Kosugi, N., N. Hirose, N., T. Toyoda, M. Ishii (2021): Rapid freshening of Japan Sea Intermediate Water in the 2010s. J Oceanogr. 77, 269–281. Hirose, N., N. Usui, K. Sakamoto, H. Tsujino, G. Yamanaka, H. Nakano, S. Urakawa, T. Toyoda, Y. Fujii, N. Kohno (2019): Development of a new operational system for monitoring and forecasting coastal and open-ocean states around Japan, Ocean Dyn,, 69, 1333-1357. Sakamoto, K., H. Tsujino, H. Nakano, S. Urakawa, T. Toyoda, N. Hirose, N. Usui, G. Yamanaka (2019): Development of a 2-km resolution ocean model covering the coastal seas around Japan for operational application, Ocean Dyn., 69, 1181-1202. Toyoda, T., N. Hirose, L. S. Urakawa, H. Tsujino, H. Nakano, N. Usui, Y. Fujii, K. Sakamoto, G. Yamanaka (2019): Effects of inclusion of adjoint sea ice rheology on backward sensitivity evolution examined using an adjoint ocean–sea ice model. Monthly Weather Review, 147, 2145-2162. Usui, N., T. Wakamatsu,Y. Tanaka, N. Hirose, T. Toyoda, S. Nishikawa, Y. Fujii, Y. Takatsuki, H. Igarashi, H. Nishikawa, Y. Ishikawa, T. Kuragano, M. Kamachi (2017): Four-dimensional variational ocean reanalysis: a 30-year high-resolution dataset in the western North Pacific (FORA-WNP30), J. Oceanogr., 73(2), 205-233.
Project	Research on Atmosphere, Ocean, and Earth System Modeling