Re: Wind anomaly, MJO_PC_INDEX and MJO clivar

The real key is the daily anomalies. If they are not correct, none
of the MJO diagnostics are correct. You should look very carefully
at how the anomalies were generated. What datasets were used?
For debugging and testing, use a smaller temporal sample and
plot the data.

On 6/3/12 10:58 PM, juki juki wrote:
> Dear All;
> As my previous email that I would like to plot MJO phase diagram by
> usinghttp://www.ncl.ucar.edu/Applications/Scripts/mjoclivar_15.ncl. To
> see the performance of the code, first I plot same data period as in the
> website. The result is very different from the example
> (http://www.ncl.ucar.edu/Applications/Images/mjoclivar_15_lg.png) in
> which the location of all MJO phases for all months is different from
> that in the website.
> Thus, my MJO_PC_INDEX.nc <http://mjo_pc_index.nc/> may NOT be correct.
> As we know the input of mjoclivar_15.ncl is MJO_PC_INDEX.nc
> <http://MJO_PC_INDEX.nc> which is creted by
> http://www.ncl.ucar.edu/Applications/Scripts/mjoclivar_14.ncl. Moreover,
> the input of
> http://www.ncl.ucar.edu/Applications/Scripts/mjoclivar_14.ncl are:
>
>
> filolr = "olr.day.anomalies.1980-2012.nc
> <http://olr.day.anomalies.1980-2012.nc/>"
> filu200 = "uwnd.day.200.anomalies.1980-2012.nc
> <http://uwnd.day.200.anomalies.1980-2012.nc/>"
> filu850 = "uwnd.day.850.anomalies.1980-2012.nc
> <http://uwnd.day.850.anomalies.1980-2012.nc/>"
> Among these 3 inputs, it seems the wind anomalies are not correct because
> when I try to calculate Conventional (covariance) univariate EOF
> analysis <http://www.ncl.ucar.edu/Applications/Scripts/mjoclivar_12.ncl>
> fortime span 1995-1999 (as in the website) using
> http://www.ncl.ucar.edu/Applications/Scripts/mjoclivar_12.ncl, the
> result of OLR is close to the website, but for U850 and U200 is
> different and significant different for EOF-3 (enclosed). Thus, I think
> my wind anomalies is not correctly calculated.
> I calculated wind anomalies from daily data as the code below
> (enclosed). I don’t know whether the way to merge the files and then
> calculate anomaly from those files is correct or not. Probably you have
> suggestion and help for that.
> Thanks you,
> JoeKy
>
>
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Received on Tue Jun 5 20:20:54 2012