[ncl-talk] inconsistent results of taylor_stats

[Ekin Akoglu]

Dear Beata,

I haven't gone through your results in detail but what I understood from 
your description of the problem, in my humble opinion, the results of 
taylor_stats may not be wrong. The correlation values just show that 
your model simulation results increase and decrease in agreement with / 
parallel to your data, i.e. simulation results increase/decrease when 
there is an increase/decrease in the data. However, correlation is not a 
measure of goodness of fit, a.k.a model skill. Bias shows how much your 
model over/underestimates the data. Hence, you may have a high 
correlation with a low bias as well as a high correlation with a high bias.

Best regards,

Ekin

On 03/08/17 11:18, Beáta Szabó-Takács wrote:
>
> Dear NCL users,
>
> I have doubts with taylor_stats functions. I created taylor diagrams 
> from five RCMs in eigth sub area and also created tables about 
> absolute bias of temperature and precipitation. I attached the 
> diagrams in pdfs and the resulted bias values in .png. According to 
> the taylor diagrams the temperature has large correlation (0.9 or 
> larger) whilst the precipitation has smaller correclation. But the 
> bias is larger in the case of temperature than in the case of 
> precipitation. I do not understand why I got inconsistent results. I 
> attached the sript of taylor diagram (taylor_ENS.ncl) and the sripts 
> of bias tables (prtaylor2.ncl and temptaylor2.ncl) and the 
> taylor_stats.ncl. Can someone inform me what I did wrong?
>
> Thank you very much for your response in advance!
>
> Kind regards,
>
> Beáta
>
>
>
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-- 
Ekin Akoglu, PhD

Assistant Professor
Institute of Marine Sciences
Middle East Technical University
P.O. Box 28, 33731
Erdemli, Turkey

Email: ekin at ims.metu.edu.tr / eakoglu at metu.edu.tr
Phone: +90 324 521 24 06 / Ext. 1328
GSM: +90 506 554 03 90
Skype: ekinakoglu

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