Accessing data using CPT (ingrid imposes a limit of 3999 points in the degrees-east grid)

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$partialdiff sub T$ $partialdiff sub T$ root mean sq anom [ IGOSS nmc Reyn_SmithOIv2 weekly sst ]

Latitude grid: /Y (degree_north) ordered (89.5S) to (89.5N) by 1.0 N= 180 pts :grid
Time grid: /T (julian_day) ordered [ (12-18 Nov 1981) (19-25 Nov 1981) (26 Nov 1981 - 2 Dec 1981) ... (1-7 Sep 2019)] N= 1974 pts :grid

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CPTv10+