mean sea level pressure & geopoential height cdo /1.5.6.1
Added by cynthia hays over 11 years ago
Hello,
I'm working with CMIP_5_RCM_forcing_MPI-ESM files (rcm_c5, rcm_c5_133, rcm_etc, rmc_land, and rcm_fx) to use in a rcm (WRF). I'm very new to using cdo and I have a couple of questions?
1)Does cdo have an operator (maybe undocumented) to calculate mean sea level pressure?
2)I also want to calculate 3D geopotential height. I found a message about this in this forum, but it was saying I need a field 152 which is not included in the files that I have. (I have fields of 4,9,11,68,102,103,129,130,133,134,138,139,140,141,153,154,155,193,210,211,214). Is there a way to work around this?
Thanks in advance.
Cindy
Replies (2)
RE: mean sea level pressure & geopoential height cdo /1.5.6.1 - Added by Jaison-Thomas Ambadan over 11 years ago
Hi,
the operator "geopotheight" calculates the geopotential height but I guess the input file/variables must follow ECHAM convention [parameter table]; here the 152 refers to the "log surface pressure". You can find all the parameter table(s) in "libcdi/src/table.h" in the CDO installation directory.
Cheers,
J.
RE: mean sea level pressure & geopoential height cdo /1.5.6.1 - Added by Uwe Schulzweida over 11 years ago
Yes, the undocumented operator geopotheight calculates the 3D geopotential height on hybrid model levels. The surface pressure is required for this calculation. If the log. surface pressure (code 152) is not available the surface pressure (code 134) is used.
There is no CDO operator to calculate the mean sea level pressure.
Cheers,
Uwe