= PHYPRO-01_agn_OSMOSIS_science Last edition: '''[[Wikinfo(changed_ts)]]''' by '''[[Wikinfo(changed_by)]]''' The PI is responsible to closely follow the progress of the action, and especially to contact NEMO project manager if the delay on preview (or review) are longer than the 2 weeks expected. [[PageOutline(2, , inline)]] == Summary ||=Action ||PHYPRO-01_agn_OSMOSIS_science || ||=PI(S) || George Nurser || ||=Digest || Improvements to OSMOSIS OBL to improve behaviour in shelf-sea areas and under sea ice || ||=Dependencies || If any || ||=Branch || source:/NEMO/branches/{YEAR}/dev_r{REV}_{ACTION_NAME} || ||=Previewer(s) || Names || ||=Reviewer(s) || Names || ||=Ticket || #2352 || === Description Improve OSMOSIS ocean boundary layer (OBL) model in 3 areas: 1. Ensure consistent behaviour of OSMOSIS-OBL under ice. Revert to classic shear turbulence based on ice-ocean turbulent friction velocity where ice areal coverage is high; scale with ice fraction between shear turbulence and Langmuir turbulence model. Where Stokes drift unavailable, move to parametrised form. 2. Improve representation of OSMOSIS-OBL mixing in equatorial regions. Include mixing associated with shear of mean flow as in equatorial undercurrent. 3. Mixing in shelf seas. The OSMOSIS-OBL is primarily a surface boundary layer model and so is not set up for bottom-driven tidal mixing. We intend to transition to GLS in shelf seas. 􏱔􏱦􏱋􏱌􏱧􏱎 􏱺􏱢􏱟􏱺􏱢􏱞􏱢 􏱪􏱏􏱱􏱎􏱔􏱎 􏱓􏱜􏱩􏱎􏱋 􏱪􏱎􏱬􏱷􏱣􏱏􏱎􏲀 􏱣􏱜 􏱐􏱱􏱎 􏱐􏱋􏱌􏱦􏱣􏱏􏱪 􏱴􏱪􏱱􏱎􏱬􏱋 􏱾􏱣􏱐􏱱 􏱎􏲄􏱓􏱬􏱐􏱌􏱋􏱣􏱬􏱤 􏱓􏱜􏱩􏱎􏱋􏱏􏱓􏱋􏱋􏱎􏱜􏱐􏱵 􏱬􏱜􏱩 􏱣􏱜 􏱪􏱱􏱬􏱤􏱤􏱌􏱾 􏱪􏱱􏱎􏱤􏱫 􏱪􏱎􏱬􏱪 􏱴􏱣􏱜􏱐􏱎􏱋􏱬􏱏􏱐􏱣􏱌􏱜 􏱾􏱣􏱐􏱱 􏱕􏱌􏱐􏱐􏱌􏱔 􏱕􏱌􏱓􏱜􏱩􏱬􏱋􏱝 􏱤􏱬􏱝􏱎􏱋􏱵􏲂 􏱰􏱎􏱧􏱎􏱤􏱌􏱦 􏱩􏱣􏱬􏱨􏱜􏱌􏱪􏱐􏱣􏱏􏱪 􏱎􏱜􏱎􏱋􏱨􏱝 􏱕􏱓􏱩􏱨􏱎􏱐 􏱐􏱌 􏱬􏱪􏱪􏱓􏱋􏱎 􏱎􏱜􏱎􏱋􏱨􏱎􏱐􏱣􏱏 􏱏􏱌􏱜􏱪􏱣􏱪􏱐􏱎􏱜􏱏􏱝􏲂􏱞􏱔􏱦􏱋􏱌􏱧􏱎 􏱺􏱢􏱟􏱺􏱢􏱞􏱢 􏱪􏱏􏱱􏱎􏱔􏱎 􏱓􏱜􏱩􏱎􏱋 􏱪􏱎􏱬􏱷􏱣􏱏􏱎􏲀 􏱣􏱜 􏱐􏱱􏱎 􏱐􏱋􏱌􏱦􏱣􏱏􏱪 􏱴􏱪􏱱􏱎􏱬􏱋 􏱾􏱣􏱐􏱱 􏱎􏲄􏱓􏱬􏱐􏱌􏱋􏱣􏱬􏱤 􏱓􏱜􏱩􏱎􏱋􏱏􏱓􏱋􏱋􏱎􏱜􏱐􏱵 􏱬􏱜􏱩 􏱣􏱜 􏱪􏱱􏱬􏱤􏱤􏱌􏱾 􏱪􏱱􏱎􏱤􏱫 􏱪􏱎􏱬􏱪 􏱴􏱣􏱜􏱐􏱎􏱋􏱬􏱏􏱐􏱣􏱌􏱜 􏱾􏱣􏱐􏱱 􏱕􏱌􏱐􏱐􏱌􏱔 􏱕􏱌􏱓􏱜􏱩􏱬􏱋􏱝 􏱤􏱬􏱝􏱎􏱋􏱵􏲂 􏱰􏱎􏱧􏱎􏱤􏱌􏱦 􏱩􏱣􏱬􏱨􏱜􏱌􏱪􏱐􏱣􏱏􏱪 􏱎􏱜􏱎􏱋􏱨􏱝 􏱕􏱓􏱩􏱨􏱎􏱐 􏱐􏱌 􏱬􏱪􏱪􏱓􏱋􏱎 􏱎􏱜􏱎􏱋􏱨􏱎􏱐􏱣􏱏 􏱏􏱌􏱜􏱪􏱣􏱪􏱐 === Implementation {{{#!box width=35em help Describe flow chart of the changes in the code. \\ List the Fortran modules and subroutines to be created/edited/deleted. \\ Detailed list of new variables to be defined (including namelists), \\ give for each the chosen name and description wrt coding rules. }}} ''...'' === Documentation updates {{{#!box width=55em help Using previous parts, define the main changes to be done in the NEMO literature (manuals, guide, web pages, …). }}} ''...'' == Preview {{{#!box width=50em info [[Include(wiki:Developers/DevProcess#preview_)]] }}} ''...'' == Tests {{{#!box width=50em info [[Include(wiki:Developers/DevProcess#tests)]] }}} ''...'' == Review {{{#!box width=50em info [[Include(wiki:Developers/DevProcess#review)]] }}} ''...''