dx7 stream description file for gx1v5 SSMI iFrac data SSMI daily sea ice fraction climatology, 1990-1999 ifrac ifrac domain.ocn.gx1v5.061230.nc time xc yc area mask ssmi_ifrac.clim_1990-1999.gx1v5.070327.nc cp:/fis/cgd/cseg/csm/inputdata/ice/dice7/SSMI