id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
925	VERY IMPORTANT: Updated nesting connetivity tool contact.m	arango		"This is an essential update to the ROMS nesting connectivity tool [[span(style=color: #FF0000, **contact.m**)]]. In particular, the local function [[span(style=color: #FF0000, refine_coordinates)]] is enhanced to be more robust for Cartesian and Spherical nested grid applications when computing ROMS metric variables.

I added the following critical information to [[span(style=color: #FF0000, **contact.m**)]] header:

 [[span(style=color: #0000FF, Users need to be aware of potential problems with spherical grids because we do not know how the grid generation tool computed the ROMS metrics (**pm**, **pn**, and **angle**) for all nested grids. Therefore, any procedure here will not exactly conserve coarse-to-fine area because of inconsistent (**lon**, **lat**) distance methodology. One possible solution is to recompute the ROMS metrics for all grids using **roms_metrics.m** based only on its (**lon**,**lat**) coordinates. Thus, we have an invariant way in the computation of the ROMS metrics in all the nested grids before running this tool.)]] [[span(style=color: #FF0000, See **roms_metrics.m** for methodology details.)]]

* Deprecated function [[span(style=color: #FF0000, **grid_metrics.m**)]] is removed from the repository to avoid any confusion in the future.  It is replaced with more robust function [[span(style=color: #FF0000, **roms_metrics.m**)]].

* [[span(style=color: #FF0000, **coarse2fine.m**)]] is also updated to use [[span(style=color: #FF0000, **roms_metrics**)]] for consistency. "	upgrade	closed	major	Release ROMS/TOMS 4.1	Matlab	4.0	Done