$partialdiff sub Y$ $integral dY$ detrended-bfl [ WORLDBATH432 bath ]
Longitude | grid: /X (degree_east) periodic (0.4166667E) to (0.4166565W) by 0.8333334 N= 432 pts :grid |
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Latitude | grid: /Y (degree_north) ordered (90N) to (90S) by 0.8333333 N= 217 pts :grid |