[gradsusr] Simple query: Accumulated Rain??

[giacomo tricarico]

So, now I see..I use this script code to create ctl files:
./grib2ctl.pl -verf wrfprs_d00.${fhr} > wrfprs_d00_${fhr}.ctlwhere fhr goes from 00 to 48, with 3h steps
How could I exactly do what you are saying? Please, if you have time, provide a full code :(

Date: Wed, 9 Sep 2015 17:10:52 -0500
From: instantweathermaps at gmail.com
To: gradsusr at gradsusr.org
Subject: Re: [gradsusr] Simple query: Accumulated Rain??

The control file you are opening only contains one GRIB file. You need to make a control file that contains multiple GRIB files (which might be called wrsprs_d01_00.grib2, wrsprs_d01_03.grib2, etc) so that you can access the prior times.

Joey
InstantWeatherMaps.com

On Wed, Sep 9, 2015 at 4:54 PM, giacomo tricarico <mino-98 at hotmail.it> wrote:



OK! So I'm using this example code:
'open wrfprs_d01_${fhr}.ctl  ##IN THIS EXAMPLE I'VE USED wrsprs_d01_12.ctl'set display color white' 'set gxout shaded''color 1 100 1 -kind white->red   ##USES A SCRIPT THAT MAKES A NEW RAINBOW SACLE'd APCPsfc(t-3)+APCPsfc'

But I receive this error:
Notice:  Automatic Grid Interpolation Taking PlaceData Request Warning:  Request is completely outside file limits  Entire grid contents are set to missing data   Grid limits of file:     X = 1 93  Y = 1 87  Z = 1 26  T = 1 1  E = 1 1   Grid limits of request:  X = 1 93  Y = 1 87  Z = 1 1  T = -2 -2  E = 1 1   Warning issued for variable = apcpsfcCannot contour grid - all undefined values 

Please help me, it's very important for my website!

Cheers,GiacomoDate: Wed, 9 Sep 2015 16:13:14 -0500
From: instantweathermaps at gmail.com
To: gradsusr at gradsusr.org
Subject: Re: [gradsusr] Simple query: Accumulated Rain??

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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