Moisture Convergence

[Arpita Mandal]

hi
i am using GAME reanalysis data.
it has 7 month data from 1 april to 31 oct 1998. it has each day dat at 6
hr interval. i want to plot mositure divergenge for each month. i have
tried with two files of april. i have combined two files into one file
'ab' by using the cat command of unix. i have written a ctl file which
calls the file ab.
then in grads i plot divergenge by giving 'd hdivg(uwv,vwv)'
the uwv, uvw are in kg/m/s, but mositure diveregnce is in mm/month. how
can i convert them and do it.
kindly suggest something.
thank you
arpita

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dset      ^ab
undef    -9.99E33
options   big_endian template yrev
xdef     288 linear   0.0  1.25
ydef     145 linear -90.0  1.25
zdef       1 levels 1000
tdef     2  linear 00z01apr1998 6hr
VARS      20
rsub   0  0  Upward shortwave flux at bottom[W/m**2]
rsdb   0  0  Downward shortwave flux at bottom[W/m**2]
rlub   0  0  Upward longwave flux at bottom[W/m**2]
rldb   0  0  Downward longwave flux at bottom[W/m**2]
rsut   0  0  Upward shortwave flux at top[W/m**2]
rsdt   0  0  Downward shortwave flux at top[W/m**2]
rlut   0  0  Upward longwave flux at top[W/m**2]
cla    0  0  Total cloud amount
rcsb   0  0  Cloudforcing of shortwave at bottom[W/m**2]
rclb   0  0  Cloudforcing of longwave at bottom[W/m**2]
rof    0  0  Run off(m/day)
fllh   0  0  Latent heat flux[W/m**2]
flsh   0  0  Sensible heat flux[W/m**2]
ltrs   0  0  Transpiration[W/m**2]
lint   0  0  Interception[W/m**2]
rrc    0  0  Convective precipitation[mm/day]
rrl    0  0  Largescale precipitation[mm/day]
tpw    0  0  Total precipitable water[kg/m**2]
uwv    0  0  Water vapor flux[Kg/m/s]
vwv    0  0  Water vapor flux[Kg/m/s]
ENDVARS
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