[gradsusr] Normalize GFS precipitation to 1hr

[Ivan Toman]

Hello,

As new GFS has 1hr output step, it would be nice to normalize 
precipitation amount in grib files to 1h. To do this I tried, after 
downloading gribs in 1h step:
cat *.gfs.* > gfs.grib2
wgrib2 gfs.grib2 -set_grib_type c1 -ncep_norm normalized_gfs.grib2
g2ctl -verf normalized_gfs.grib2 >n_gfs.ctl
gribmap -i n_gfs.ctl

Then open n_gfs.ctl in GrADS, however, it seems to me that precipitation 
is not being normalized correctly.

Am I missing something?

Is there any other way to get nice 1h precipitation steps in grib files 
or can you suggest GrADS way to do 1h precipitation without normalizing 
gribs first?

Thank you,
Ivan Toman