[ncl-talk] Taylor Diagram

[Vanúcia Schumacher]

Dear users,I'm confused with the calculation of RATIO (normalized root-mean-saquare (RMS) differences), relation to Taylor Diagram,  the comments that I have read here in the group, it was suggested calculated in 3 ways:1) Use of the function:   dim_rmsdor 2) RATIO; temporal variance at each grid point [local] ;   vref_var_T = dim_variance_n(rdata, 0 ) ; (lat,lon) ;   vcase_var_T = dim_variance_n(cdata, 0 ) ;                 ; wgted areal *local* temporal variance ;   wvar_ref_T = sum(wgt_S*vref_var_T)/sumwgt_S ;   wvar_case_T = sum(wgt_S*vcase_var_T)/sumwgt_S                  ; sqrt of ratio of spatially weighted variances ;   wvar_ratio_T = (wvar_case_T/wvar_ref_T)^0.5 I did not understand what would that sumwgt_S ?or 3) more explicitly, for xc and xo on the same grid: wgtc=wgto;         wgtc  = conform_dims(dimsizes(xc), gw, 0)    ; make 2d for gw[*];         xavgc = sum(wgtc*xc)/sum(wgtc)               ; control centered mean;         xavgo = sum(wgtc*xo)/sum(wgtc);     (b) compute the sum of the centered area weighted variances.;         dc2   = sum(wgtc*(xc-xavgc)^2)               ; control ; centered about xavgc;         do2   = sum(wgtc*(xo-xavgo)^2);         rat   = sqrt(do2/dc2) xc and xo is the variance or datasets?I would like to know the step by step to correct this calculation RATIO, if someone can help me, please.Thanks 		 	   		  
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