[Wrf-users] same run - different results?

[Michalakes, John]

Was everything else the same? Same number of processors? Same exact set of processors? Same run directory? Same wrf.exe executable? Same environment variables?



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-----Original Message-----
From: Elena Maria Pison San Pedro [emp at dhi.com.sg<mailto:emp at dhi.com.sg>]
Sent: Friday, November 02, 2012 03:40 AM Mountain Standard Time
To: wrfhelp at ucar.edu
Cc: wrf-users at ucar.edu
Subject: same run - different results?


Hi,

I was surprised to find that running on WRF 3.4 the same domain, with the same initial and boundary conditions could get different results.

I’ve read about the fact that the internal variability of a model can give different results, for the same period of simulation, when the initial conditions change even just for a few days/hours.
However, running 2 times the same and finding differences till +/- 8m/s in U10 for example is scaring. Anyone can explain me how this is possible?

[cid:image002.jpg at 01CDB920.F8DA23B0]

A Million Thanks in advance!

Elena




Elena Pison San Pedro
M.Sc. in Atmospheric Sciences

Meteorologist/Climate Change Researcher



[cid:image003.gif at 01CDB920.F8DA23B0]



DHI-NTU Research Centre and Education Hub,
DHI Water & Environment (S) Pte Ltd

1 Clean Tech Loop

#03-05 CleanTech One

Singapore 637141















Tel:



+65-6777-6330



emp at dhi.com.sg<mailto:emp at dhi.com.sg>

www.dhigroup.com<http://www.dhigroup.com/>





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