id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
289	Terrain-following vertical coordinate overhaul	arango	arango	"This is a major redo of ROMS vertical coordinates.  It was expanded to support an additional transformation and numerous vertical stretching functions. The original transformation and vertical stretching function is still available.

All the input scripts ('''ocean*.in''') were modified to include two new vertical coordinate parameters:

{{{
! Set vertical, terrain-following coordinates transformation equation and
! stretching function (see below for details), [1:Ngrids].

  Vtransform == 1                          ! transformation equation
 Vstretching == 1                          ! stretching function
}}}

There is extensive documentation about this in standard input script ('''ocean*.in''') and [https://www.myroms.org/wiki/index.php/Vertical_S-coordinate WikiROMS]. Also check the following message in the [https://www.myroms.org/forum/viewtopic.php?f=13&t=1233 forum].

Many thanks to Sasha Shchepetkin for providing us his tranformation and vertical stretching function (available in UCLA-ROMS as default), Rocky Geyer for providing us a new vertical stretching function for sediment applications in shallow grids, Andy Moore for his help checking these transformations in the adjoint codes, and Rich Signell for his help with CF Conventions Committe and the NetCDF-Java Group.
"	upgrade	closed	major	Release ROMS/TOMS 3.2	Nonlinear	3.2	Done