[gradsusr] GEM Precipitation issue

[Chorley Weather]

Hi Joey, 

Worked a treat, ta very much. 

On 14-12-2015 06:18, Joey Woodson wrote: 

> You can use APCPsfc-APCPsfc(t-1) to get the 3-hour precipitation. Note that you need to have downloaded the ACPCsfc GRIB file for the previous forecast hour as well in order to do this. You also need to generate a .ctl file that encompasses both GRIB files (personally I like to have it include all of the relevant files). 
> 
> On Sat, Dec 12, 2015 at 8:53 AM, Chorley Weather <weatherstu at chorleyweather.com> wrote:
> 
>> Hi all, 
>> 
>> I am currently developing GEM charts (25km) and I see that function variable APCPsfc is actually accumulated precipitation. Is there a way to get single 3 hour precipitation rates without the accumulation. There is also a PRATE option but this seem to be full of undefined values. 
>> 
>> Thank you in advance, 
>> -- 
>> 
>> Stuart Markham 
>> 
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> 
> -- 
> 
> http://www.instantweathermaps.com [2] 
> 
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-- 

Stuart Markham 

 

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