A multi‐model ensemble Kalman filter for data assimilation and forecasting

E Bach, M Ghil - Journal of Advances in Modeling Earth …, 2023 - Wiley Online Library
Data assimilation (DA) aims to optimally combine model forecasts and observations that are
both partial and noisy. Multi‐model DA generalizes the variational or Bayesian formulation …

On the properties of ensemble forecast sensitivity to observations

S Kotsuki, K Kurosawa, T Miyoshi - Quarterly Journal of the …, 2019 - Wiley Online Library
Evaluating impacts of observations on the skill of numerical weather prediction (NWP) is
important. The Ensemble Forecast Sensitivity to Observation (EFSO) provides an efficient …

Improving the Analysis and Forecast of Hurricane Dorian (2019) with Simultaneous Assimilation of GOES-16 All-Sky Infrared Brightness Temperatures …

CM Hartman, X Chen, EE Clothiaux… - Monthly Weather …, 2021 - journals.ametsoc.org
Recent studies have shown that the assimilation of all-sky infrared (IR) observations can be
beneficial for tropical cyclone analyses and predictions. The assimilation of tail Doppler …

[HTML][HTML] Correlation-cutoff method for covariance localization in strongly coupled data assimilation

T Yoshida, E Kalnay - Monthly Weather Review, 2018 - journals.ametsoc.org
Strongly coupled data assimilation (SCDA), where observations of one component of a
coupled model are allowed to directly impact the analysis of other components, sometimes …

A framework for four-dimensional variational data assimilation based on machine learning

R Dong, H Leng, J Zhao, J Song, S Liang - Entropy, 2022 - mdpi.com
The initial field has a crucial influence on numerical weather prediction (NWP). Data
assimilation (DA) is a reliable method to obtain the initial field of the forecast model. At the …

Combining ensemble Kalman filter and reservoir computing to predict spatiotemporal chaotic systems from imperfect observations and models

F Tomizawa, Y Sawada - Geoscientific Model Development, 2021 - gmd.copernicus.org
Prediction of spatiotemporal chaotic systems is important in various fields, such as numerical
weather prediction (NWP). While data assimilation methods have been applied in NWP …

Proactive quality control: Observing system simulation experiments with the Lorenz'96 model

TC Chen, E Kalnay - Monthly Weather Review, 2019 - journals.ametsoc.org
Proactive quality control (PQC) is a fully flow-dependent QC for observations based on the
ensemble forecast sensitivity to observations technique (EFSO). It aims at reducing the …

Proactive quality control: Observing system experiments using the NCEP global forecast system

TC Chen, E Kalnay - Monthly Weather Review, 2020 - journals.ametsoc.org
Proactive quality control (PQC) is a fully flow dependent QC based on ensemble forecast
sensitivity to observations (EFSO). Past studies showed in several independent cases that …

Machine learning enables real‐time proactive quality control: A proof‐of‐concept study

T Honda, A Yamazaki - Geophysical Research Letters, 2024 - Wiley Online Library
To improve the forecast accuracy of numerical weather prediction, it is essential to obtain
better initial conditions by combining simulations and available observations via data …

Quantum data assimilation: a new approach to solving data assimilation on quantum annealers

S Kotsuki, F Kawasaki, M Ohashi - Nonlinear Processes in …, 2024 - npg.copernicus.org
Data assimilation is a crucial component in the Earth science field, enabling the integration
of observation data with numerical models. In the context of numerical weather prediction …