Sibo Cheng et al. have published a new paper paper related to their work in SASIP-WP4:

Machine learning with data assimilation and uncertainty quantification for dynamical systems: a review, accepted for publication in IEEE/CAA Journal of Automatica Sinica.

Sibo Cheng, Cesar Quilodran-Casas, Said Ouala, Alban Farchi, Che Liu, Pierre Tandeo, Ronan Fablet, Didier Lucor, Bertrand Iooss, Julien Brajard, Dunhui Xiao, Tijana Janjic, Weiping Ding, Yike Guo, Alberto Carrassi, Marc Bocquet, Rossella Arcucci

https://arxiv.org/abs/2303.10462.

Fig.6 (from Cheng et al 2023): Workflow of training and applying RNN for observation covariance estimation