The existence of a pullback attractor for the three dimensional non-autonomous planetary geostrophic viscous equations of large-scale ocean circulation

In this paper, we prove the existence of a pullback attractor in H2(Ω)H2(Ω) for the process {U(t,τ)}t≥τ{U(t,τ)}t≥τ associated with the three dimensional non-autonomous planetary geostrophic viscous equations of large-scale ocean circulation by asymptotic a priori estimates.