ASUCA: The JMA operational non-hydrostatic model

J Ishida, K Aranami, K Kawano… - Journal of the …, 2022 - jstage.jst.go.jp
The nonhydrostatic numerical weather prediction (NWP) model ASUCA developed by the
Japan Meteorological Agency (JMA) was launched into operation as 2 km-and 5 km …

Real-time flash flood forecasting approach for development of early warning systems: integrated hydrological and meteorological application

J Trošelj, S Nayak, L Hobohm… - … , Natural Hazards and …, 2023 - Taylor & Francis
This study proposes an integrated hydrometeorological modelling framework approach and
methodology for flash flood Early Warning Systems in the Chugoku region of Japan …

Enhancing a real-time flash flood predictive accuracy approach for the development of early warning systems: hydrological ensemble hindcasts and parameterizations

J Trošelj, HS Lee, L Hobohm - Sustainability, 2023 - mdpi.com
This study marks a significant step toward the future development of river discharges
forecasted in real time for flash flood early warning system (EWS) disaster prevention …

Forecasts of the July 2020 Kyushu heavy rain using a 1000-member ensemble Kalman filter

L Duc, T Kawabata, K Saito, T Oizumi - Sola, 2021 - jstage.jst.go.jp
Forecast performances of the July 2020 Kyushu heavy rain have been revisited with the aim
of improving the forecasts for this event. While the Japan Meteorological Agency's (JMA) …

Ensemble rainfall–runoff and inundation simulations using 100 and 1000 member rainfalls by 4D LETKF on the Kumagawa River flooding 2020

K Kobayashi, L Duc, T Kawabata, A Tamura… - Progress in Earth and …, 2023 - Springer
This paper presents the 1000 ensemble flood simulations using ensemble rainfalls
simulated by 4D LETKF. The number of ensemble rainfall members is large as 1000 …

A new approach to represent model uncertainty in the forecasting of tropical cyclones: The orthogonal nonlinear forcing singular vectors

Y Zhang, W Duan, S Vannitsem… - Quarterly Journal of the …, 2023 - Wiley Online Library
Tropical cyclone (TC) track forecasting has been considerably improved in recent decades,
while TC intensity forecasting remain challenging. In this study, orthogonal nonlinear forcing …

Adaptive selection of members for convective-permitting regional ensemble prediction over the western Maritime Continent

K Sharma, JCK Lee, A Porson… - Frontiers in …, 2023 - frontiersin.org
A common issue faced by the downscaled regional ensemble prediction systems is the
under-dispersiveness of the ensemble forecasts, often attributed to the lack of spread under …

Regional solar irradiance forecast for kanto region by support vector regression using forecast of meso-ensemble prediction system

T Takamatsu, H Ohtake, T Oozeki, T Nakaegawa… - Energies, 2021 - mdpi.com
From the perspective of stable operation of the power transmission system, the transmission
system operators (TSO) needs to procure reserve adjustment power at the stage of the …

JMA Operational Hourly Hybrid 3DVar with Singular Vector-Based Mesoscale Ensemble Prediction System

S Yokota, T Banno, M Oigawa, G Akimoto… - Journal of the …, 2024 - jstage.jst.go.jp
This study hybridizes the background error covariance (BEC) of the hourly atmospheric
three-dimensional variational data assimilation (3DVar) in Local Analysis (LA) operated at …

Importance of ocean prediction for heavy rainfall prediction over Japan in July 2020

Y Baba - Atmospheric Science Letters, 2022 - Wiley Online Library
Hindcast experiments were performed for heavy rainfall events over Japan in July 2020
using a regional atmospheric model and a regional coupled model to examine the …