[gradsusr] tcorr error: invalid grid coordinates

[Jeffrey Duda]

Mira,
I don't use tcorr, but I did a quick check using some of my WRF data and I
had no problem getting it to work when I didn't close the individual files
between defining the variables.  Perhaps try it without closing the files.

Jeff Duda

On Tue, Nov 16, 2010 at 4:10 PM, Mira Losic <mlosic at envsci.rutgers.edu>wrote:

> Hi everyone,
>
> I'm hoping someone can help me with the tcorr function. I am simply trying
> to correlate two WRF time series of temperature (T2) at a particular grid
> location and level from the beginning to end of my time series. (t=1 to
> t=123). The commands and errors are copied below.
>
> Also, I'd like to use tcorr to correlate my WRF output to my station data.
> Can tcorr find the correlation between station and gridded data?
>
> Many thanks,
> Mira
>
> ga-> open RUN4_StationVars.ctl
> Scanning description file:  RUN4_StationVars.ctl
> Data file RUN4_StationVars.nc is open as file 1
> LON set to -116.1 -34.1464
> LAT set to 55.9 78.7109
> LEV set to 1 1
> Time values set: 1981:7:1:6 1981:7:1:6
> Notice: Implied interpolation for file RUN4_StationVars.ctl
>  Interpolation will be performed on any data displayed from this file
> ga-> set lat 68.47
> LAT set to 68.4613 68.4613
> ga-> set lon -66.82
> LON set to -66.8144 -66.8144
> ga-> set t 1 123
> Time values set: 1981:7:1:6 1981:7:31:18
> ga-> define test=T2-273.15
> Notice:  Automatic Grid Interpolation Taking Place
> Define memory allocation size = 492 bytes
> ga-> close 1
> File 1 has been closed
> ga-> open RUN3_StationVars.ctl
> Scanning description file:  RUN3_StationVars.ctl
> Data file RUN3_StationVars.nc is open as file 1
> LON set to -116.1 -34.1464
> LAT set to 55.9 78.7109
> LEV set to 1 1
> Time values set: 1981:7:1:6 1981:7:1:6
> Notice: Implied interpolation for file RUN3_StationVars.ctl
>  Interpolation will be performed on any data displayed from this file
> ga-> set lat 68.47
> LAT set to 68.4613 68.4613
> ga-> set lon -66.82
> LON set to -66.8144 -66.8144
> ga-> set t 1 123
> Time values set: 1981:7:1:6 1981:7:31:18
> ga-> define test2=T2-273.15
> Notice:  Automatic Grid Interpolation Taking Place
> Define memory allocation size = 492 bytes
> ga-> close 1
> File 1 has been closed
> ga-> d tcorr(test,test2,t=1,t=123)
> TCORR:  dim = 3, start = 1, end = 123
> Data Request Error: Invalid grid coordinates
>  Varying dimension 3 decreases: -2.89491e+06 to -2.89491e+06
>  Error ocurred getting variable 'test'
> Error from TCORR:  Error getting grids
> Operation Error:  Error from tcorr function
>  Error ocurred at column 1
> DISPLAY error:  Invalid expression
>  Expression = tcorr(test,test2,t=1,t=123)
>
>
>
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-- 
Jeff Duda
Iowa State University
Meteorology Graduate Student
3134 Agronomy Hall
www.meteor.iastate.edu/~jdduda
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