[Thread Prev][Thread Next][Index]

Re: [ferret_users] height to pressure inversion



Hi Halldor,
The ZAXREPLACE functions will do this. The function takes a variable on one Z axis, a function relating the new Z axis to the old one; and it makes the conversion. The documentation contains examples using sigma coordinates, but the process can be used for any two monotonic Z axes.  See ZAXREPLACE in the Users Guide documentation.

Ansley



halldor bjornsson wrote:
Dear Ferreters,

I am working with NCEP height data
ftp://ftp.cdc.noaa.gov/Datasets/ncep.reanalysis.derived/pressure/hgt.mon.ltm.nc

This data has height in terms of pressure, i.e. Z(p).
I want to invert this into pressure as a function of height, i.e. P(z).

I have been looking at the sigma regridding go files, but these are fine to  change the
vertical coordinate from p to z, but do not invert the variable from Z to P, i.e. do not give me the pressure.

Does anyone know how to do a conversion such as this one?

Sincerely,
Halldór

--
Halldór Björnsson
Deildarstj. Ranns. & Þróun
Veðursvið Veðurstofu Íslands

Halldór Bjornsson
Weatherservice R & D
Icelandic Met. Office

-- 

~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~> 

Ansley Manke, NOAA/PMEL   ansley.b.manke@xxxxxxxx
7600 Sand Point Way NE, Seattle WA
Phone 206-526-6246,  FAX 206-526-6744


[Thread Prev][Thread Next][Index]

Contact Us
Dept of Commerce / NOAA / OAR / PMEL / TMAP

Privacy Policy | Disclaimer | Accessibility Statement