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Vertical interpolation from model levels to pressure levels on SE grid

strandwg

Moderator
Staff member
Is there an "official" AMWG way to interpolate the hybrid sigma levels to specified pressure levels for data on the SE grid?

NCL's vinth2p* functions only work on lat/lon grids, so the SE grid breaks them.

Any suggestions/comments are welcome. Thanks!
 

aherring

Adam
Member
I'm at the acceptance phase of my grieving ... and had assumed ncl is done making new functions.

The GeoCAT folks have recently implemented vinth2p into python. You could inquire about this functionality by opening an issue: NCAR/geocat-comp
 

9-Jean Li

New Member
Thanks for the pointers.

It looks like there's not yet a replacement or an update to NCL "vinth2p*"


that can use the SE grid.
Hi,
Firstly, I changed the SE grid to lon-lat grid using "ncremap" (NCO operator), then I used NCL "vinth2p" to do the vertical interpolation. But there still had abnormal value near undergrond region in near surface pressure level. Then, I saw the function you mentioned "vinth2p_ecmwf", I found it works in dealing with the abnormal atmospheric value near surface level. Thanks!
I wonder if you know whether there is a convenient way to dealing with the abnormal value near surface topography when using "vinth2p" to interpolate hybrid to pressure? Because I always used "vinth2p" to deal with the vertical interpolation before, and I don't know how to do with the wrong value because of tropography in those data. Thank you again!
Any advice would be appreciated!
 

strandwg

Moderator
Staff member
Hi,
Firstly, I changed the SE grid to lon-lat grid using "ncremap" (NCO operator), then I used NCL "vinth2p" to do the vertical interpolation. But there still had abnormal value near undergrond region in near surface pressure level. Then, I saw the function you mentioned "vinth2p_ecmwf", I found it works in dealing with the abnormal atmospheric value near surface level. Thanks!
I wonder if you know whether there is a convenient way to dealing with the abnormal value near surface topography when using "vinth2p" to interpolate hybrid to pressure? Because I always used "vinth2p" to deal with the vertical interpolation before, and I don't know how to do with the wrong value because of tropography in those data. Thank you again!
Any advice would be appreciated!

If "vinth2p_ecmwf" gives you the results you want, then use it instead of "vinth2p".
 

strandwg

Moderator
Staff member

nuvolet

Toni Viudez
Member
Greetings,

I was wondering if the function vinth2p is available in Python or in similar package as is in NCL.
Thanks in advance
 
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