[RegCNET] RegCM4.3 and horizontal resolution

[Pir S. Ali]

Dear Graziano,

I Checked the output file in NCL and it showing correct resolution.

Thank you once again.

Ciao:)))

with regards,
Ali

On Mon, Aug 13, 2012 at 2:04 AM, Graziano Giuliani <ggiulian at ictp.it> wrote:
>
> On 08/13/2012 10:13 AM, Pir S. Ali wrote:
> [...]
>>
>> I have run RegCM4.3 with *horizontal resolution ds = 25.0* but ctlinfo
>> command in Grads show *0.11 degrees instead of 0.22*
>> xdef   892 linear   43.97  * 0.11*
>> ydef   502 linear    3.05   *0.11*
>>
> [...]
>
> The resolution set in the CTL file is NOT the original resolution of the RegCM output. The resolution set there are those of a regular lat/lon grid on which to INTERPOLATE the RegCM output ONLY FOR SMOOTH GRAPHICAL DISPLAY. The choice to set the display resolution to ~ half the original model resolution comes just from VISUAL CONSIDERATIONS of the GrADS produced plots, and goes back to regcm3.
> In my opinion, the GrADS plotting program should be considered just the SIMPLEST tool to use in post-processing the model output, as A NUMBER of other tools are available capable of reading netCDF files, and offer a BETTER AND MORE COMPLETE ENVIRONMENT to extract statistical numbers out of the raw model output data.
> The presence of GrADS helper programs in the PostProc directory is not a suggestion or worse requirement to use GrADS in the PostProc: they are there only because in the regcm3 days users were using GrADS, and a number of them still use it, and we keep on supporting the capability to read output file into GrADS.
> In my opinion, a LOT OF BETTER ENVIRONMENTS are available, and new users should check which one of those has the best tools to ease their scientific work, instead of struggling in the usage of the oversimple GrADS plotter.
>
> Ciao!
>
> --
> Graziano Giuliani - Earth System Physics Section
> The Abdus Salam International Centre for Theoretical Physics
> Strada Costiera, 11 - I - 34151 Trieste Italy
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--
Shaukat Ali

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