4 papers
An extended Perron-Frobenius operator filter for nonlinear state estimation
Yuta Miwa, Yoshihiko Susuki, Shunji Kotsuki
We propose an extended Perron--Frobenius Operator Filter (PFOF) for nonlinear state estimation. The method learns the Perron--Frobenius operator, an infinite-dimensional linear ope…
A Real-Time Remote-Sensing-Guided Decision-Support Framework for Cloud-Seeding Operations: A Field Demonstration Using Himawari-9 and C-band Phased Array Weather Radar
Shunji Kotsuki, Kazuaki Yasunaga, Atsushi Hamada +11
This study proposes a real-time remote-sensing-guided decision-support framework for cloud-seeding operations using high frequency geostationary satellite and ground weather radar…
Bridging Artificial Intelligence and Data Assimilation: The Data-driven Ensemble Forecasting System ClimaX-LETKF
Akira Takeshima, Kenta Shiraishi, Atsushi Okazaki +2
While machine learning-based weather prediction (MLWP) has achieved significant advancements, research on assimilating real observations or ensemble forecasts within MLWP models re…
Conditional Diffusion Models for Global Precipitation Map Inpainting
Daiko Kishikawa, Yuka Muto, Shunji Kotsuki
Incomplete satellite-based precipitation presents a significant challenge in global monitoring. For example, the Global Satellite Mapping of Precipitation (GSMaP) from JAXA suffers…