[gradsusr] GFS total accumulated precipitation

[Brian Gaze]

Perfect. Thanks Jim.

On 4 August 2015 at 20:45, James T. Potemra <jimp at hawaii.edu> wrote:

> Hi Brian,
>
> Sorry, yeah you'll have to concatenate the files together.  But, you can
> do that with the template option in grads.  An explanation is given at
> http://www.iges.org/grads/gadoc/templates.html.
>
> Jim
>
>
> On 8/3/15 8:29 PM, Brian Gaze wrote:
>
> Thanks Jim.
>
> Understand the function, but to use does it require me to first
> concatenate the individual grib2 files together for each time step required?
>
> Brian
>
>
>
> On 4 August 2015 at 02:59, James T. Potemra <jimp at hawaii.edu> wrote:
>
>> Hi Brian,
>>
>> You should be able to use the GrADS function "sum", e.g., 'd
>> sum(precip,t=1,t=384)'.
>>
>> Jim
>>
>>
>> On 8/3/15 10:46 AM, Brian Gaze wrote:
>>
>> Hi,
>>
>> I'd like to be able to plot a chart using shading and contours for a lat
>> long range (rather than single point) which displays the total accumulated
>> precipitation for a series of time steps rather than each individual one in
>> the GFS run. For example, total precipitation for 0 to 384 hours, lat 30 to
>> 60, lon -45 -60.
>>
>> The GFS grib2 files don't seem to contain a variable with this data so
>> I'm guessing it's necessary to sum precipitation values from each
>> individual file? Any suggestions for the best way to go about this?
>>
>> Thanks
>>
>> BWG
>>
>>
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