Changeset 2541 for trunk/DOC/TexFiles/Chapters/Chap_ZDF.tex
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- 2011-01-09T05:55:20+01:00 (13 years ago)
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trunk/DOC/TexFiles/Chapters/Chap_ZDF.tex
r2414 r2541 246 246 \subsubsection{Surface wave breaking parameterization} 247 247 %-----------------------------------------------------------------------% 248 249 248 Following \citet{Mellor_Blumberg_JPO04}, the TKE turbulence closure model has been modified 250 249 to include the effect of surface wave breaking energetics. This results in a reduction of summertime … … 329 328 %--------------------------------------------------------------% 330 329 331 %add here a description of "penetration of TKE" and the associated namelist parameters332 % \np{nn\_etau}, \np{rn\_efr}, \np{nn\_htau} 330 To be add here a description of "penetration of TKE" and the associated namelist parameters 331 \np{nn\_etau}, \np{rn\_efr} and \np{nn\_htau}. 333 332 334 333 % from Burchard et al OM 2008 : 335 % the most critical process not reproduced by statistical turbulence models is the activity of internal waves and their interaction with turbulence. After the Reynolds decomposition, internal waves are in principle included in the RANS equations, but later partially excluded by the hydrostatic assumption and the model resolution. Thus far, the representation of internal wave mixing in ocean models has been relatively crude (e.g. Mellor, 1989; Large etal., 1994; Meier, 2001; Axell, 2002; St. Laurent and Garrett, 2002).334 % the most critical process not reproduced by statistical turbulence models is the activity of internal waves and their interaction with turbulence. After the Reynolds decomposition, internal waves are in principle included in the RANS equations, but later partially excluded by the hydrostatic assumption and the model resolution. Thus far, the representation of internal wave mixing in ocean models has been relatively crude (e.g. Mellor, 1989; Large et al., 1994; Meier, 2001; Axell, 2002; St. Laurent and Garrett, 2002). 336 335 337 336 … … 355 354 of \eqref{Eq_zdftke_e}) should balance the loss of kinetic energy associated with 356 355 the vertical momentum diffusion (first line in \eqref{Eq_PE_zdf}). To do so a special care 357 have to be taken for both the time and space discretization of the TKE equation \citep{Burchard_OM02}. 356 have to be taken for both the time and space discretization of the TKE equation 357 \citep{Burchard_OM02,Marsaleix_al_OM08}. 358 358 359 359 Let us first address the time stepping issue. Fig.~\ref{Fig_TKE_time_scheme} shows
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