[gradsusr] temporal correlation map between model and observation

[mehwish ramzan]

Dear GrADS Users,

I have worked out the right script.

Thank you

With Best Regards,
Mehwish

On Mon, Feb 13, 2017 at 5:51 AM, mehwish ramzan <mehwish.ramzan at gmail.com>
wrote:

> Dear GrADS users,
>
> I am trying to calculate the temporal correlation between model and
> observation precipitation for one season using monthly precipitation data.
>
> Due to the difference in resolution of both datasets, i used cdo to
> convert them into same resolution (i tried lterp of grads l but it didn't
> work).
>
> cdo intgrid,obs_jja.nc model_res_jja.nc model_jja.nc
>
> (note that i moved obs_jja.nc and model_jja.nc into new directory and
> merge both files into one using)
>
> cdo merge *.nc jja.nc
>
>
> ga-> sdfopen jja.nc
>
> ga-> set x 1
> LON set to 11.875 11.875
> ga-> set y 1
> LAT set to -15.125 -15.125
> ga-> set t 1 3
> Time values set: 2005:6:1:0 2005:8:1:0
> ga-> define model= prec
> Define memory allocation size = 24 bytes
> ga-> set lon 12 123
> LON set to 12 123
> ga-> set lat -15 45
> LAT set to -15 45
> ga-> set t 1 3
> Time values set: 2005:6:1:0 2005:8:1:0
> ga-> define obs= pr
> Define memory allocation size = 2590368 bytes
> ga-> set t 1
> Time values set: 2005:6:1:0 2005:6:1:0
> ga-> d tcorr(model, obs, t=1, t=3)
> TCORR:  dim = 3, start = 1, end = 3
> Cannot contour grid - all undefined values
>
> I can visualize both variables individually but the tcorr doesn't work.
>
> Please guide me.
>
> Thank you
>
> With Best Regards,
> Mehwish
>
>
>
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