[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[IDV #OMA-852870]: How to subtract off a mean profile or standard atmosphere profile?



> Hello IDV folks.
> 
> For fields like T or theta or geopotential, I wish I could remove a reference 
> profile
> T(p) to subtract off the huge vertical gradient, so that horizontal gradients
> (which are so crucial for dynamics) can be discerned better in cross sections.
> 
> Is there a way to subtract a zonal mean, or the global mean, or even a
> standard atmosphere, from every column in a 3D grid?
> I can't find anything useful in here.
> http://www.unidata.ucar.edu/software/idv/docs/userguide/tools/JythonLib.html
> 

Brian,
     We do have some examples in the workshop document:

http://www.unidata.ucar.edu/software/idv/docs/workshop/formulas/MoreWithJython.html


I am not fully understanding your requirement, but this may help.


Yuan
> 
> I thought about subtracting the initial TIME using 
> differenceFromBaseTime(field),
> but this introduces a lot of spatial structure from the initial spatial 
> fields,
> obscuring the structure of the time being analyzed.
> 
> 
> Thanks for any suggestions.
> And Merry Christmas!
> Brian
> 
> Brian Mapes
> address@hidden<mailto:address@hidden> or address@hidden<mailto:address@hidden>
> 
> 
> 
> 
> 


Ticket Details
===================
Ticket ID: OMA-852870
Department: Support IDV
Priority: Normal
Status: Closed


NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.