[MITgcm-support] Setting ygOrigin in offline mode for Cartesian grids

Uchida Takaya tu2140 at columbia.edu
Sat Jul 6 18:12:35 EDT 2019

Dear MITgcm support,

I am currently trying to set up an offline run with Cartesian coordinates in which I use horizontal velocity data from a different run over the model domain of Y=[800,1200] km and X=[1400,2000] km as input.
The example in the documentation only seems to mention cases on a spherical polar grid with ygOrigin and dySpacing being set in latitude (http://mitgcm.org/public/r2_manual/latest/online_documents/node173.html#SECTION004203100000000000000 <http://mitgcm.org/public/r2_manual/latest/online_documents/node173.html#SECTION004203100000000000000>) but when using a Cartesian grid, could you let me know what I should use as ygOrigin?

I tried setting ygOrigin=8e5 (800km) but STDOUT indicates the model run is stopping there. If I set ygOrigin=0., the model runs but gives no output even though I’ve set the floater package to give me outputs hourly. My assumption for the latter case is that because I’m setting particles to exist over the domain of Y=[800,1200] km and X=[1400,2000] km, the model thinks that there are no particles when ygOrigin=0. but I may be wrong.

Thank you,
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