Re: [idvusers] Precipitation accumulation

Hi John -- that fixed the problem!

Best Regards,

Robert Dewey


On Wed, Nov 14, 2012 at 11:50 AM, John Caron <caron@xxxxxxxxxxxxxxxx> wrote:

> Hi Robert:
>
> The GRIB accumulation variables are being read incorrectly in CDM/TDS
> version 4.2. They are hopefully correct in 4.3. Could you try using the TDS
> 4.3 version at
>
> http://motherlode.ucar.edu:**9080/thredds/idd/modelsNcep.**html<http://motherlode.ucar.edu:9080/thredds/idd/modelsNcep.html>
>
> and let me know what you think? There are some real complexities in
> handling these fields that we need to look at closely.
>
> Thanks!
>
> John
>
>
> On 11/14/2012 8:18 AM, Robert Dewey wrote:
>
>> I'm having trouble accumulating precipitation properly (using the NAM from
>> the Motherlode THREDDS). I'm using the Formula > Grids > Time Steps
>> functions, and getting weird results. I assume this is because the NAM
>> accumulates 3-hourly precipitation, but doesn't "reset" until every 12th
>> forecast hour... so the accumulation function is adding up everything in
>> between and giving values way too high. I tried selecting each individual
>> 12th forecast hour, but that doesn't seem to work for some reason.
>>
>> Any ideas?
>>
>>
>> Best Regards,
>>
>> Robert Dewey
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