[gradsusr] trmm

[Muhammad Rahiz]

1. Need to provide the format of your TRMM data e.g. netcdf, grib, ctl.
2. Are you using a 360 day calendar?

Other comments in the body of original message (not tested).

-- 
Muhammad Rahiz
Researcher & DPhil Candidate (Climate Systems & Policy)
School of Geography & the Environment
University of Oxford

On Sat, 5 Feb 2011, SREEKANTH T.S wrote:

> dear grads users
> i have downloaded 3 hourly trmm data.
> 1.i want to plot hourly variation of rain rate at a particular lat lon for
> each day.

Your data is 3 hourly - this means that you can only have 8 time steps in 
a day and not 24 timesteps. You can try the following which gives you the 
plot (time series) of one day.

'set t 1 8' * 8 timesteps = 1 day given your 3hourly data
'set lon 60'
'set lat 40'
'd var'

> 2. also wanted to plot the daily variation of rain rate for an area.
> but i dont know how to write the .ctl file
> being a beginer can anyone help me, please?

Not sure what you mean by writing a ctl file. You dont need to write a ctl 
file to plot in GrADS.

'set lon 60 100'
'set lat 20 40'

'd ave(variable,t=1,t=8)'  * this is for day 1
'printim day1.png white'

'd ave(variable,t=9,t=16)' * this is for day 2
'printim day2.png white'


> sreekanth T S
> doctorate student
> cess, kerala
> 
>