2 papers
physics.ao-ph2026
MAPCast: A Convection Allowing MPAS Emulator for Ensemble-based Background Error Covariance Estimation Toward Multi-Scale Data Assimilation
Yongming Wang, Xuguang Wang
Machine learning (ML) emulators offer a cost-efficient alternative to numerical weather prediction models for generating convection-allowing background ensembles in ensemble-based…
physics.ao-ph2026
Evaluating data-driven background ensembles covariances from Graphcast: a case study for Hurricane Lee (2023)
Zhihong Chen, Xuguang Wang
Short-term background ensemble covariances (BEC) are crucial for ensemble-based data assimilation (DA). However, limited studies so far have examined the fidelity of the cost-effec…