FN Archimer Export Format PT CHAP TI Constrained Random Diffeomorphisms for Data Assimilation BT Chapron, B., Crisan, D., Holm, D., Mémin, E., Radomska, A. (eds) Stochastic Transport in Upper Ocean Dynamics II. STUOD 2022. Part of the Mathematics of Planet Earth book series (MPE,volume 11).. Springer, Cham. Print ISBN 978-3-031-40093-3 Online ISBN 978-3-031-40094-0, 10.1007/978-3-031-40094-0_13, pp.281-292 AF Resseguier, Valentin Zhen, Yicun CHAPRON, Bertrand AS 1:1,2;2:3;3:4; FF 1:;2:;3:PDG-ODE-LOPS-SIAM; C1 INRAE,OPAALE,Rennes,France LAB,SCALIANDS,Rennes,France Department of Oceanography, Hohai University, Nanjing,China Laboratoire d’Océanographie Physique et Spatiale(LOPS),Ifremer,Plouzané,France C2 INRAE, FRANCE SCALIAN, FRANCE UNIV HOHAI, CHINA IFREMER, FRANCE SI BREST SE PDG-ODE-LOPS-SIAM UM LOPS UR https://archimer.ifremer.fr/doc/00856/96752/105299.pdf LA English DT Book section AB For ensemble-based data assimilation purposes, there is a definite need for relevant ensemble sampling tools. Indeed, the quality and spreading of these ensembles have deep implications in the quality of the data assimilation, and—until recently—those so-called covariance inflation tools have mostly relied on unsuitable linear Gaussian frameworks. A promising alternative is the generation of ensembles through a stochastic remapping of the physical space. PY 2024 DI 10.1007/978-3-031-40094-0_13 ID 96752 ER EF