NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel CBMZW Data Files

This dataset has bytes (5.6327501E08 537.18091MB) of data in it, which should give you a rough idea of the size of any file that you ask for.

Download Data To Specific Software

ingrid	The Postscript-based software on which the Data Library is built.
CPT	Climate Predictability Tool