[gradsusr] Simple query: Accumulated Rain??

Joey Woodson instantweathermaps at gmail.com
Wed Sep 9 17:13:14 EDT 2015


If the WRF output is 3hr-accumulated, then use sum. If it's
total-accumulated, use subtraction.

Joey Woodson
InstantWeatherMaps.com

On Wed, Sep 9, 2015 at 3:11 PM, giacomo tricarico <mino-98 at hotmail.it>
wrote:

> In my specific case, which code should I use?
> Thanks Joey!!
>
> ------------------------------
> Date: Wed, 9 Sep 2015 14:49:07 -0500
> From: instantweathermaps at gmail.com
> To: gradsusr at gradsusr.org
> Subject: Re: [gradsusr] Simple query: Accumulated Rain??
>
>
> You can use the sum function in GrADS to calculate x-hr accumulated rain
> from n-hr accumulated rain, where x>n. If x<n, you can use subtraction, as
> in ACPCsfc(t-4)-ACPCsfc.
>
> On Wed, Sep 9, 2015 at 7:19 AM, giacomo tricarico <mino-98 at hotmail.it>
> wrote:
>
> Hi, my WRF plots 17 files, from 00h to 48h, with 3h steps; so rain is
> accumulated each 3 hours.
>
> BUT how could I have 12h and 24h accumulated rain with grads? So that I
> have respectively 4 and 2 images :)
>
> Thanks,
> Giacomo
>
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