$partialdiff sub T$ $partialdiff sub Y$ $integral dX$ [ NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic MSL pressure ]
| Longitude | grid: /X (degree_east) ordered (1.25W) to (1.25W) by 2.5 N= 145 pts :grid |
|---|---|
| Latitude | grid: /Y (degree_north) ordered (88.75N) to (88.75S) by 2.5 N= 72 pts :grid |
| Time | grid: /T (months since 1960-01-01) ordered (16 Jan 1949 - 15 Feb 1949) to (16 Apr 2021 - 15 May 2021) by 1.0 N= 868 pts :grid |