2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/76992We consider time-periodic patterns of the dissipative three dimensional baroclinic quasigeostrophic model in spherical coordinates, under time-dependent forcing. We show that when the forcing is time-periodic and the spatial square-integral of the forcing is bounded in time, the model has time-periodic solutions.laTex fileDynamical SystemsAnalysis of PDEs58F39; 76U05text