Changes between Version 10 and Version 11 of 2016WP/NocWad

Timestamp:

2016-06-09T10:35:31+02:00 (8 years ago)

Author:

mike.bell

Comment:

--

2016WP/NocWad

@@ -321 +321 @@
 1. Main points
 
-A. History and Objectives: Jason and Hedong have previous experience of WAD in POLCOMS and FVCOM respectively. They have been working on WAD in NEMO since 2012. WAD is a key capability for NOC and it would be valuable for NOC to have it in NEMO. The Met Office needs WAD to work in NEMO for an upgrade to CMEMS north-west European shelf system expected to be required within 1-2 years. The aim is to implement  a non intrusive, accurate, stable and efficient formulation of WAD within NEMO. In order to
-be non intrusive a scheme using a minimum depth of water (@ 5-10 cm) at all potentially wet point is being implemented (similar to POM and ROMS implementation). 
-We should publish results of our implementation. To do this we will need to compare results with other schemes (e.g. POM and ROMS implementations) for 
-simple test cases.      
+A. History and Objectives: Jason and Hedong have previous experience of WAD in POLCOMS and FVCOM respectively. They have been working on WAD in NEMO since 2012. WAD is a key capability for NOC and it would be valuable for NOC to have it in NEMO. The Met Office needs WAD to work in NEMO for an upgrade to CMEMS north-west European shelf system expected to be required within 1-2 years. The aim is to implement  a non intrusive, accurate, stable and efficient formulation of WAD within NEMO. In order to be non intrusive a scheme using a minimum depth of water (@ 5-10 cm) at all potentially wet point is being implemented (similar to POM and ROMS implementation). We should publish results of our implementation. To do this we will need to compare results with other schemes (e.g. POM and ROMS implementations) for simple test cases.      
 
 B. Review of WAD code: The main changes to an ocean model and issues associated with an implementation of WAD are: 
@@ -334 +331 @@
 - the thin film of water at dry cells results in an artificial horizontal pressure gradient (hpg) along a sloping bottom
 
-- some implementations (e.g. POM) have adjusted the bottom friction 
+- some implementations (e.g. POM) have adjusted the bottom friction or anticipated problems with (uncoupled) surface heat fluxes generating "boiling" water of 5 cm depth  
 
 - the 3D equations can be unstable in a very thin layer of water (with many levels); e.g. problems with CFL for vertical advection or diffusion