Dear Ulrich,
The precipitation in RegCM is not accumulated, it is just the average during the 3 hrs. So if you want to calculate the monthly precipitation and compare with the OBS from stations you should calculate the SUM.
hope this helpful
Regards

 
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Researcher, Center of Excellence for Climate Change Research (CECCR)
King Abdulaziz University
P. O. Box 80234, Jeddah 21589,
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From: Ulrich Jacques Diasso <udiasso@gmail.com>
To: regcnet@lists.ictp.it
Sent: Thursday, April 3, 2014 1:16 PM
Subject: [RegCNET] Is precipitaion from REGCM4 ACCUMULATED?

Dear RegCNETers,
I have to calculate monthly preicpitation from regcm4 output which is 3-hour precipitation. Is the 3-hourly rainfall accumulated? I wonder whether I need to DE-ACUMULATE the rainfall before I do the monthy sum.
Any suggestions?

Cheers

--
Ulrich

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