R: Re: [ferret_users] Conservative remapping

["markus.mingel@xxxxxxxxx" <markus.mingel@xxxxxxxxx>]

Dear Ferreters,

I would confirm that the conservative interpolation (G=reg_grid@ave) worked in 
case of regular grids, but ferret fails to regrid  fluxes from curvilinear 
grids.

Since fluxes depend on cell area, first of all I multiplied the flux by the 
area and then I used the functions curv_to_rect_map and curv_to_rect for the 
interpolations, but results are wrong.

So, considering the new CMIP5 dataset, based on your experience, which are the 
methods to regrid fluxes (e.g fgco2, intpp) from curvilinear grids (e.g. MPI-
ESM-LR, INMCM4) to regular grids?  

Regards
Markus

>----Messaggio originale----
>Da: Patrick.Brockmann@xxxxxx
>Data: 25/05/2012 11.10
>A: 
>Cc: <ferret_users@xxxxxxxx>
>Ogg: Re: [ferret_users] Conservative remapping
>
>Markus;
>>       ferret's an awkward tool for conservative remapping. It would
>> entail  just a few lines of commands with CDO
>> https://code.zmaw.de/projects/cdo
>> (or maybe also with NCO, choice depends on who you have around that's 
>> familiar with either tool)
>>
>Hi all,
>CDO has many operator for regridding.
>See https://code.zmaw.de/embedded/cdo/1.5.4/cdo.html#x1-4870002.12
>But my tries with conservative remapping on curvilinear grids have not been
>very concluding (impossible to specify that precalculated arecells have 
>to be used).
>
>Another point. NCL has annonced that next realease 6.1 will present new 
>regridding capacities
>based on the use of software from the Earth System Modeling Framework 
><http://www.earthsystemmodeling.org/> (ESMF).
>Read http://www.ncl.ucar.edu/Applications/regrid.shtml
>
>With pyferret, those ESMF regridding functions may be easier to include.
>
>Regards
>Patrick
>
>-- 
>LSCE/IPSL, Laboratoire CEA-CNRS-UVSQ
>Data Analysis and Visualization Engineer
>ICMC - IPSL Climate Modelling Centre
>--
>
>