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From the 1 of 6 linked papers with an AI index.

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6 papers

eess.SY2026

An extended Perron-Frobenius operator filter for nonlinear state estimation

Yuta Miwa, Yoshihiko Susuki, Shunji Kotsuki

The paper introduces an extended Perron‑Frobenius Operator Filter that learns the Perron‑Frobenius operator via extended Dynamic Mode Decomposition to perform efficient and accurat…

physics.ao-ph2026

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…

physics.geo-ph2026

Exploring Ultra Rapid Data Assimilation Based on Ensemble Transform Kalman Filter with the Lorenz 96 Model

Fumitoshi Kawasaki, Atsushi Okazaki, Kenta Kurosawa +1

Ultra-rapid data assimilation (URDA) is a method that rapidly updates preemptive forecasts derived from observations without integrating a dynamical model each time additional obse…

cs.LG2025

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…

cs.LG2025

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…

cs.LG2025

Wasserstein GAN-Based Precipitation Downscaling with Optimal Transport for Enhancing Perceptual Realism

Kenta Shiraishi, Yuka Muto, Atsushi Okazaki +1

High-resolution (HR) precipitation prediction is essential for reducing damage from stationary and localized heavy rainfall; however, HR precipitation forecasts using process-drive…