Research field (2)：
Atmospheric and hydrospheric science
, Statistical science
Research keywords (12)：
Ocean Prediction
, Coupled Data Assimilation
, Data Assimilation
, Optimization
, Adjoint Method
, Observing System Evaluation
, エルニーニョ
, ENSO
, 海洋データ同化
, El-Nino
, ENSO
, Ocean Data Assimilation
Research theme for competitive and other funds (13)：
2024 - 2029 Comprehensive data assimilation for optimal representation of atmospheric and oceanic environment with discontinuities
2022 - 2025 Research on long-term wave characteristics of the Japan coasts by high-resolution reanalysis
2017 - 2022 結合データ同化システム開発の方法と応用
2015 - 2018 熱帯太平洋観測システム効率化への成長擾乱・時空間変動特性の利用に関する研究
2014 - 2017 Overturning circulation that connects the surface and intermediate layers in the North Pacific: A new perspective on its three-dimensional structure and variability
S. Hirahara, I. Ishikawa, Y. Fujii, H. Nakano, H. Tsujino, Y. Adachi, H. Naoe. Tropospheric and Stratospheric Boreal Winter Jet Response to Eddying Ocean in a Seasonal Forecast System. Journal of Geophysical Research: Atmospheres. 2024. 129. 11
Yosuke Fujii, Elisabeth Remy, Magdalena Alonso Balmaseda, Shoichiro Kido, Jennifer Waters, K. Andrew Peterson, Gregory C. Smith, Ichiro Ishikawa, Kamel Chikhar. The international multi-system OSEs/OSSEs by the UN Ocean Decade Project SynObs and its early results. Frontiers in Marine Science. 2024. 11
Yosuke Fujii, Takuma Yoshida, Hiroyuki Sugimoto, Ichiro Ishikawa, Shogo Urakawa. Evaluation of a global ocean reanalysis generated by a global ocean data assimilation system based on a four-dimensional variational (4DVAR) method. Frontiers in Climate. 2023. 4
Y. Fujii, T. Yoshida, Y. Kubo. Ensemble Member Generation Based on the BFGS Formula in a Variational Data Assimilation System. Proceedings of the Institute of Statistical Mathematics. 2022. 70. 2. 209-233
Y. Niwa, Y. Fujii. Estimation of a Posterior Error Covariance Matrix Using Conjugate Vectors and the BFGS Formula. Proceedings of the Institute of Statistical Mathematics. 2022. 70. 2. 195-208
Detlef Stammer, Daniel E. Amrhein, Magdalena Alonso Balmaseda, Laurent Bertino, Massimo Bonavita, Carlo Buontempo, Nico Caltabiano, Francois Counillon, Ian Fenty, Raffaele Ferrari, et al. Earth System Reanalysis in Support of Climate Model Improvements. Bulletin of the American Meteorological Society. 2024. 105. 8. E1399-E1406
Y. Fujii. SynObs: A Synergistic Observing Network for Ocean Prediction. Ocen Newsletter. 2023. 547. 2-3
藤井陽介, 藤井陽介, 高谷祐平, 石川一郎. Plan of Observing System Experiments (OSEs) for evaluating the new configuration of the Tropical Pacific Observing System (TPOS). 日本地球惑星科学連合大会予稿集(Web). 2023. 2023
Development of Four-Dimensional Variational Global Ocean Data Assimilation System for Coupled Predictions in Japan Meteorological Agency
(NOAA's S2S Application Workshop 2024)
Preliminary results of SynObs flagship Observing System Experiments
(14th International Workshop on Modeling the Ocean 2024 2024)
Impact of Ocean observations in S2S forecasts: results from ECMWF and the wider OSES for S2S initiative
(8th WMO Workshop on the Impact of Various Observing Systems on NWP 2024)
Past achievements and ongoing efforts of ocean in situ data evaluation made by the international ocean and S2S prediction community
(8th WMO Workshop on the Impact of Various Observing Systems on NWP 2024)
2024/01 - Meteorological Society of Japan Journal of Meteorological Society of Japan Paper Award Japan Meteorological Agency/Meteorological Research Institute Coupled Prediction System version 3 (JMA/MRI-CPS3)
2016/02 - Meteorological Research Institute Director General Award Contribution to developing global ocean data assimilation system and introducing it to the seasonal forecasting system
