Plotting exponent of a variable in GrADS

[Annes Hassankunju]

Dear GrADS users,

 

I would like to create a shaded image of a variable which is defined as:

 

factor = Ln(U1/U2), where Ln is the natural logarithm. I tried the
script below which does not work:

 

'define u=UGRD10m'

'define v=VGRD10m'

'define U1=sqrt(u*u+v*v)'

'define U2=FRICVsfc'

 

'define factor = math_exp(U1*0.4/U2)'

 

-----------------

 

Any help will be much appreciated.

 

Thanks,

 

Annes

 

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