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Possible Bugs in Radiation OBC in t3dbc_im.F

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Barbara

Post subject: Possible Bugs in Radiation OBC in t3dbc_im.F

Posted: Mon Sep 30, 2013 3:03 am

Joined: Thu Sep 14, 2006 4:33 pm
Posts: 25
Location: LTO, SCSIO

The calcuation of tau in t3dbc_im.F of the latest version is writen as:

Code:

                  tau=Tobc_out(itrc,ng,iwest)
                  IF ((dTdt*dTdx).lt.0.0_r8) THEN
                    tau=Tobc_in(itrc,ng,iwest)
                  ELSE
                    tau=tau*dt(ng)
                  END IF

and it should be:

Code:

                  IF ((dTdt*dTdx).lt.0.0_r8) THEN
                    tau=Tobc_in(ng,iwest)
                  ELSE
                    tau=Tobc_out(ng,iwest)
                  END IF
                  tau=tau*dt(ng)

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arango

Post subject: Re: Possible Bugs in Radiation OBC in t3dbc_im.F

Posted: Tue Oct 01, 2013 1:43 am

Site Admin

Joined: Wed Feb 26, 2003 4:41 pm
Posts: 1079
Location: IMCS, Rutgers University

Wow, great catch :!:

You should get the award for the most significant bug discovered by a regular ROMS user. I updated the code. See the following :arrow:

trac ticket for details.

Thank you for reporting this important bug. It is possible that it has very little impact in some applications. It just implies that boundary tracer value was not nudged as strongly as we specified.

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patrickm

Post subject: Re: Possible Bugs in Radiation OBC in t3dbc_im.F

Posted: Tue Oct 01, 2013 7:13 am

Joined: Fri Apr 30, 2004 6:41 pm
Posts: 24
Location: IRD, FRANCE

Hi Hernan, could that explain the "inconsistency" between surface bulk formulations and OBCs in the simulations that you presented in Rio last year?

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