current, wind & wave induced bottom stresses

[smrhashemi]

Hello all

I have run a coupled ROMS-SWAN model and I used MB_BBL for bottom boundary layer formulation.
I would like to extract the following bed stresses:

> Current induced

> Combined Current induced & wave induced
( tauCW=tauC*[1+1.2*(tauW/(tauC+tauW))^3.2] )

> Wind Induced

> Total resulting stress (wind+wave+current)

I have found bustr, bustrc, bustrw (& corresponding v components) in varinfo.dat but still not sure about the technical aspect of these variables and how they are related to the variables that I am looking for?

I appreciate your comments

[jcwarner]

bu/vstr = current stresses at u and v points
bu/vstrc = current stresses at rho points
bu/vstrw = wave only stresses at rho points
bu/vstrcwmax = combined maximum wave+current stresses at rho points

this paper can be helpful

! Warner, J.C., C.R. Sherwood, R.P. Signell, C.K. Harris, and H.G. !
! Arango, 2008: Development of a three-dimensional, regional, !
! coupled wave, current, and sediment-transport model, Computers !
! & Geosciences, 34, 1284-1306. !

[smrhashemi]

Many thanks John

That was very helpful. Therefore, wind induced stresses are actually wave induced stresses in varinfo.dat.

I suppose if somebody wanted to compute wind induced stresses, he could run ROMS (decoupled ignoring waves) with and without wind forcing and subtract the resulting current induced bed stresses?

thanks