| | 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 | |
| | 74 | First 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 | |
| | 89 | Representation 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 | |
| | 121 | NEMO(ln_cpl_true) ↔ OASIS ↔ '''BulkAtm''' |
| | 122 | In 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 | ... |
