Cross correlation between two zonally averaged variables

Hello NCL-talk,

I want to create a plot of cross-correlation between two zonally averaged
variables. I used clmMonTLL and dim_avg_Wrap to create the zonal averages
and then used escorc function to compute the correlation. When I tried to
plot results I get the following error. I will appreciate any help to
resolve this,

(0) check_for_y_lat_coord: Warning: Data either does not contain a valid
latitude coordinate array or doesn't contain one at all.
(0) A valid latitude coordinate array should have a 'units' attribute
equal to one of the following values:
(0) 'degrees_north' 'degrees-north' 'degree_north' 'degrees north'
'degrees_N' 'Degrees_north' 'degree_N' 'degreeN' 'degreesN' 'deg north'

The script is attached. Thank you in advance,
Noel

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