[gradsusr] Removing zonal component

[Joseph Basconcillo]

Dear GrADS users,

I want to remove zonal mean per latitude of each time. Say I have 35 months,

sdfopen hgt.nc
set t 1 35
define hgt= hgt - ave(x=1, x=35)
d hgt
sdfwrite -3dt hgt2.nc
define hgt=hgt
sdfwrite hgt
c

So in each month the zonal mean component per latitude is removed showing only the non-zonal component. Is this the correct way to do this objective?

Yours,
Joseph