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Re: [ferret_users] Convert units of x and y axis from (KM) to (Degree)



Hi Ashraf,
You asked several questions that all seemed to be related to the same question in working with your data. Did Jaison's answer help you? If you still need more help, could you tell us more about the data you are using and how you set up the stereograpic projection?

It sounds as though your variable NO3 is initially on a grid defined in km. If so, then you need to define a new grid in units of degrees, and regrid the data to that grid. If you define the new grid to have its coordinate points at the same locations as the input grid, but in the new units of degrees, then you would use the @ASN regridding transformation to put the data onto the latitude-longitude grid.

Are you running the mp_stereographic_north or mp_stereographic_south journal script to create the projection? If so, then you should regrid to the grid defined in degrees first, and then use the projection script.

Ansley

Ashraf Zakey wrote:

Hello everyone,

With Netcdf data and Stereographic projection, I
would like to convert the units of X and Y axis
from (KM) to (Degree) using Ferret to darw the
concentrations of some Air pollutants.


I did something such as:

let x1=x/111.1
let y1=y/111.1
fill/set NO2,x1,y1

But it donsn't work

I appreciate any help

Thanks

Ashraf




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| Ashraf Saber Zakey |
| Department of Chemistry |
| Atmospheric Science group |
| Universty of Gothenburg |
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