Re: vorticity advection on lat,long grid

There is an undocumented, unsupported function in shea_util.ncl.
It requires global grids. 'x' would be vorticity

undef("advect_gradient")
function advect_gradient (u:numeric, v:numeric, x:numeric \
                          ,gridType[1]:integer, con[1]:numeric \
                          ,long_name:string, units:string, iopt[1]:integer)
;
; linear advection of a scalar quantity: UV.GRADIENT(X)
; : U*(dX/dlon) + V*(dX/dlat)
;
; Requires that the grid be global cuz spherical harmonics are used
; dimension order ([time,[lev,]]lat,lon)

On 12/16/11 12:26 AM, John Hyun wrote:
> Dear all,
> If anyone has the ncl code for calculating vorticity advection on
> lat,long coordinate model output, please help me to see that.
> Looks like there is no function for this in NCL, so if anyone already
> developed this, please share with me.
> Thanks in advance.
> Best regardds,
> John Hyun
>
>
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Received on Fri Dec 16 08:54:02 2011