Department of Mathematics & Statistics,University of Maryland-Baltimore County,1000 Hilltop Circle,Baltimore,MD 21250,USA;
Department of Mathematics,University of California-Davis,One Shields Avenue,Davis,CA 95616,USA;
Department of Mathematics & Statistics,CUNY Hunter College,695 ParkAve,NewYork,NY10065,USA;
Department of Mathematics,CUNY Graduate Center,3655th Ave,New York,NY10016,USA;
Continuous data assimilation; nudging; 2D Navier-Stokes equations; general interpolant observables; synchronization; higher-order convergence; partition of unity; mesh-free; Azounai-Olson-Titi algorithm;