Changes between Version 7 and Version 8 of 2017UpdateNEMOStrategy/First Steps


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Timestamp:
2016-10-26T13:55:54+02:00 (4 years ago)
Author:
laurent
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  • 2017UpdateNEMOStrategy/First Steps

    v7 v8  
    6464== Chapter 7 - The assimilation and ensemble component of NEMO - Pierre-Antoine Bouttier and Dan Lea == 
    6565== Chapter 8 - The ice components of NEMO - Ed Blockley and Martin Vancoppennolle == 
     66 
    6667== Chapter 9 - Air sea interface and surface boundary layer physics - Laurent Brodeau == 
     68 
     69''(In need help on this, mainly been talking to myself, it's incomplete, possibly redundant and not up-to-date, so feel free to correct or PM me about any remark. /laurent)'' 
     70 
     71 
     72'''A Coupling to surface wave-model''' 
     73 
     74First point because it is relevant to almost all the aspects treated in this section. 
     75 
     76→ contribution of '''WG on "wave-model coupling"''' ? 
     77 
     78* For SBC, both in forced (B) and coupled (C) mode: 
     79- better estimate of turbulent air-sea fluxes (bulk transfer coefficients, CD, CE and CH, through better knowledge of the sea surface roughness, like Charnock parameter) 
     80- more accurate estimate of the momentum flux to the ocean, based on the consideration of the consumption/release of momentum associated with the growth/dissipation of the wave field. 
     81 
     82* For surface boundary-layer physics (D): 
     83- better estimate of surface/sub-surface TKE injection via "breaking waves", "Langmuir circulation", (+mixing induced by non-breaking waves) that feed TKE and GLS schemes 
     84- consideration of Stokes-Coriolis forces 
     85 
     86 
     87'''B SBC in forced mode''' 
     88 
     89Representation of atmospheric of boundary layer processes. 
     90 
     91'''B.1 Traditional Bulk approach''' 
     92 
     93'''Consensus reached''' (at least by Madec & Brodeau)''':''' 
     94 
     95* Use more advanced algorithms and forcing functions than CORE, choice of algorithm (NCAR/COARE3.0/COARE3.5/ECMWF) 
     96* If relevant, use the native cool-skin/warm-layer scheme of the given bulk algorithm to estimate the SSST and use it to compute non-solar heat fluxes (applies to COARE3.X and ECMF algorithms) 
     97 
     98→ new sbcblk.F90 and sbcblk_algo_*.F90 based on [http://aerobulk.sourceforge.net/ AeroBulk] 
     99 
     100 see branch "branches/2016/dev_r6711_SIMPLIF_6_aerobulk" 
     101 
     102 
     103'''In discussion (no consensus yet):''' 
     104 
     105* Directly prescribe the wind-stress from the given weather reanalysis product as a SBC instead of computing it with bulk formulae and U10, the surface wind speed (U10 from an reanalysis/forecast already includes the effect of sea surface roughness (waves) and/or current speed) 
     106* wave model → see A 
     107 
     108'''B.2 Alternatives to the bulk approach''' 
     109 
     110* coupling to a to a "surface atmospheric boundary layer"-only model 
     111* coupling to a relatively cheap ACGM with spectral nudging at a specified height 
     112* ??? 
     113 
     114 
     115'''C SBC in coupled mode''' 
     116 
     117* sbccpl.F90 / communication with OASIS needs to become comprehensive 
     118* What's done in the rest of the code when "ln_cpl==.TRUE." must become consistent with what's done in forced mode. 
     119* '''Idea: fake toy bulk atmosphere:''' 
     120 
     121NEMO(ln_cpl_true) ↔ OASIS ↔ '''BulkAtm''' 
     122In which BulkAtm is simply a bulk formulae interface that receives the SST from NEMO via OASIS, reads gridded prescribed atmospheric variables, and send computed fluxes via OASIS. 
     123 
     124 
     125'''D Surface boundary-layer physics''' 
     126 
     127* Benefit from a coupled wave mode (see A) 
     128 
     129* Sub-grid closure for ocean surface boundary layer (OSBL) processes : 
     130 - coupling of lateral / vertical parameterizations in the OSBL 
     131 - evolution of TKE/GLS closure, OSMOSIS closure ? 
     132 - parameterization of spatially heterogeneous sub grid convection 
     133 
     134... 
    67135== Chapter 10 - The biogeochemical component of NEMO: TOP and its interface - Olivier Aumont and Tomas Lovato == 
    68136== Chapter 11 - NEMO validation and range of user support (including user   interface to build configurations, and Configuration Manager) - Andrew Coward ==