dset /cpc/glbgridsat/gridsat/b1-climate-data-record/%y4/GridSat-B1.%y4.%m2.%d2.%h2.v01r01.irwin.nc
options template
title GriSat-B1 - Gridded Satellite (GriSat) ISCCP B1 Observations
dtype netcdf
undef -9.99e8 missing_value
unpack scale_factor add_offset
xdef 5143 linear -180 0.07
ydef 2000 linear -70 0.07
zdef 1 linear 0 1
tdef 87664 linear 00Z1jan1980 3hr
vars 6
satlat 1 t,z sub-satellite longitude
satrad 1 t,z sub-satellite orbital radius
calslp_irwin=>calslp 1 t,z slope used in irwin calibration correction
caloff_irwin=>caloff 1 t,z offset used in irwin calibration correction
irwin 0 t,y,x brightness temperature
satid_ir 0 t,y,x satellite index
endvars
* satid_ir String Note "The SATID value corresponds to the index for the satellite variables (SATLAT, SATLON, SATRAD, SATNAME). It derives from the satellites used in the IRWIN composite."
* satid_ir String Usage "The SATID can be used in conjunction with the sub-satellite latitude and longitude to determine satellite view and azimuth angles."
* satid_ir String Requirement "Convert from signed to unsigned bytes by adding 128b to satid_ir prior to unpacking." 
* satid_ir String Unpacking "SATID=satid_ir / 15  SATID2=satid_ir % 15 [% is the modulo function]"
* satid_ir String Unpacked = "14 is missing"