An assessment of ten ocean reanalyses in the polar regions by Uotila, P, Goosse, H, Haines, K, Chevallier, M, Barthélemy, A, Bricaud, C, Carton, J, Fučkar, N, Garric, G, Iovino, D, Kauker, F, Korhonen, M, Lien, V, Marnela, M, Massonnet, F, Mignac, D, Peterson, K, Sadikni, R, Shi, L, Tietsche, S, Toyoda, T, Xie, J, Zhang, Z