Changes between Version 72 and Version 73 of Projects/NEMOVAR/Notes


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Timestamp:
03/08/15 16:16:12 (4 years ago)
Author:
cthomas
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  • Projects/NEMOVAR/Notes

    v72 v73  
    244244In the first cycle the following three stages occur:  
    245245 
    246 Stage 1: the observation operator (obsoper). Produces the innovations **y** - //H//(**x,,b,,**). 
     246Stage 1: form the observation operator (obsoper). Produces the innovations **y** - //H//(**x,,b,,**). 
    247247||= Required input      =||= Program run     =||= Output            =|| 
    248248|| Ancillary             || NEMO-CICE obsoper || Innovations         || 
     
    251251|| Fluxes                ||                   ||                     || 
    252252 
    253 Stage 2: 
     253Stage 2: run NEMOVAR which minimises the cost function //J//. Produces the resulting increments Δ**x**.  
    254254||= Required input    =||= Program run =||= Output   =|| 
    255255|| Innovations         || NEMOVAR       || Increments || 
    256256|| Forecast background ||               ||            || 
    257257 
    258 Stage 3: 
     258Stage 3: apply the increments to the background to produce the analysis **x^a^**.  
    259259||= Required input      =||= Program run     =||= Output            =|| 
    260260|| Ancillary             || NEMO-CICE obsoper || Analysis (restarts) || 
     
    263263|| Fluxes                ||                   ||                     || 
    264264 
    265 In subsequent cycles the required input in the first stage is 
     265In subsequent cycles the required input in Stage 1 uses the analysis instead of the background:  
    266266||= Required input    =|| 
    267267|| Ancillary           ||