Ocean Modeling Discussion

ROMS/TOMS

Search for:
It is currently Sun Jul 21, 2019 6:41 am




Post new topic Reply to topic  [ 2 posts ] 

All times are UTC

Author Message
PostPosted: Tue Mar 25, 2014 2:59 am 
Offline

Joined: Sun Jan 29, 2012 4:33 pm
Posts: 23
Location: Florida Institute of Technology
I'm searching for a good conceptual description of the RadNud boundary condition, specifically for tracers and 3-D momentum. I understand the nudging inflow timescales set in the *.in file and how the boundary is updated.

I'm having trouble with the concept of radiating out of the boundary and the outflow timescales. I think it's an open boundary and tracers and 3-D momentum can advect out of these boundaries freely, but that doesn't explain why there is an outflow timescale.

For my example, I have tracers nudged at 1 day and outflow at 28 days and 3-D momentum nudged at 4 days and the outflow at 112 days.

TNUDG == 28.0d0
ZNUDG == 0.0d0
M2NUDG == 0.0d0
M3NUDG == 112.0d0

OBCFAC == 28.0d0

Thank you


Top
 Profile  
Reply with quote  
PostPosted: Wed Mar 26, 2014 3:42 am 
Offline

Joined: Mon Oct 17, 2011 1:41 am
Posts: 14
Location: WHOI
RadNud means there's a nudging term added to the radiation condition. The timescale refers to the timescale of this nudging which is (generally) longer if the phase speed (determined for the radiation condition) is directed outward and shorter if it is inward.

The reference is this paper: http://www.sciencedirect.com/science/article/pii/S1463500300000135


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group