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root mean sq [ NOAA NCEP EMC CMB GLOBAL Reyn_SmithOIv2 monthly sea_ice ]

Latitude grid: /Y (degree_north) ordered (89.5S) to (89.5N) by 1.0 N= 180 pts :grid
Time grid: /T (months since 1960-01-01) ordered (Nov 1981) to (Dec 2010) by 1.0 N= 350 pts :grid

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