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The method consists of stacking collected temporal snapshots into a matrix and mapping the nonlinear dynamics using a linear operator. The classical procedure considers that snapshots possess the same dimensionality for all the observable data. However, this often does not occur in numerical simulations with adaptive mesh refinement\/coarsening schemes (AMR\/C). This paper proposes a strategy to enable DMD to extract features from observations with different mesh topologies and dimensions, such as those found in AMR\/C simulations. For this purpose, the adaptive snapshots are projected onto the same reference function space, enabling the use of snapshot-based methods such as DMD. The present strategy is applied to challenging AMR\/C simulations: a continuous diffusion\u2013reaction epidemiological model for COVID-19, a density-driven gravity current simulation, and a bubble rising problem. We also evaluate the DMD efficiency to reconstruct the dynamics and some relevant quantities of interest. In particular, for the SEIRD model and the bubble rising problem, we evaluate DMD\u2019s ability to extrapolate in time (short-time future estimates).<\/jats:p>","DOI":"10.1007\/s00366-021-01485-6","type":"journal-article","created":{"date-parts":[[2021,8,2]],"date-time":"2021-08-02T18:02:45Z","timestamp":1627927365000},"page":"4241-4268","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Dynamic mode decomposition in adaptive mesh refinement and coarsening simulations"],"prefix":"10.1007","volume":"38","author":[{"given":"Gabriel F.","family":"Barros","sequence":"first","affiliation":[]},{"given":"Mal\u00fa","family":"Grave","sequence":"additional","affiliation":[]},{"given":"Alex","family":"Viguerie","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0639-7067","authenticated-orcid":false,"given":"Alessandro","family":"Reali","sequence":"additional","affiliation":[]},{"given":"Alvaro L. 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