Changeset 6289 for trunk/DOC/TexFiles/Chapters/Chap_DIU.tex
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- 2016-02-05T00:47:05+01:00 (8 years ago)
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trunk/DOC/TexFiles/Chapters/Chap_DIU.tex
r6140 r6289 13 13 14 14 Code to produce an estimate of the diurnal warming and cooling of the sea surface skin 15 temperature (skin SST) is found in the DIU directory. The skin16 temperature can be split into three parts:15 temperature (skin SST) is found in the DIU directory. 16 The skin temperature can be split into three parts: 17 17 \begin{itemize} 18 18 \item A foundation SST which is free from diurnal warming. … … 25 25 Models are provided for both the warm layer, diurnal\_bulk.F90, and the cool skin, 26 26 cool\_skin.F90. Foundation SST is not considered as it can be obtained 27 either from the main NEMO model (i.e. from the temperature of the top few model levels) 28 or from 29 some other source. It must be noted that both the cool skin and 30 warm layer models produce estimates of the change in temperature ($\Delta T_{\rm{cs}}$ 31 and $\Delta T_{\rm{wl}}$) and both must 32 be added to a foundation SST to obtain the true skin temperature. 27 either from the main NEMO model ($i.e.$ from the temperature of the top few model levels) 28 or from some other source. 29 It must be noted that both the cool skin and warm layer models produce estimates of 30 the change in temperature ($\Delta T_{\rm{cs}}$ and $\Delta T_{\rm{wl}}$) 31 and both must be added to a foundation SST to obtain the true skin temperature. 33 32 34 Both the cool skin and warm layer models are controlled through the namelist `namdiu':33 Both the cool skin and warm layer models are controlled through the namelist \ngn{namdiu}: 35 34 \namdisplay{namdiu} 36 35 This namelist contains only two variables: 37 36 \begin{description} 38 \item[ ln\_diurnal] A logical switch for turning on/off both the cool skin and warm layer.39 \item[ ln\_diurnal\_only] A logical switch which if .TRUE. will run the diurnal model40 without the other dynamical parts of NEMO. ln\_diurnal\_only must be41 .FALSE. if ln\_diurnalis .FALSE.37 \item[\np{ln\_diurnal}] A logical switch for turning on/off both the cool skin and warm layer. 38 \item[\np{ln\_diurnal\_only}] A logical switch which if .TRUE. will run the diurnal model 39 without the other dynamical parts of NEMO. 40 \np{ln\_diurnal\_only} must be .FALSE. if \np{ln\_diurnal} is .FALSE. 42 41 \end{description} 43 42 … … 46 45 output if they are specified in the iodef.xml file. 47 46 48 Initialisation is through the restart file. Specifically the code will expect the presence of the 2-D variable ``Dsst'' to initialise the warm layer. The cool skin model, which is determined purely by the instantaneous fluxes, has no initialisation variable. 47 Initialisation is through the restart file. Specifically the code will expect 48 the presence of the 2-D variable ``Dsst'' to initialise the warm layer. 49 The cool skin model, which is determined purely by the instantaneous fluxes, 50 has no initialisation variable. 49 51 50 52 %=============================================================== 51 52 53 \section{Warm Layer model} 53 54 \label{warm_layer_sec} 54 55 55 %=============================================================== 56 56 … … 81 81 (\ref{ecmwf1}) is the instantaneous total thermal energy 82 82 flux into 83 the diurnal layer, i.e.83 the diurnal layer, $i.e.$ 84 84 \begin{equation} 85 85 Q = Q_{\rm{sol}} + Q_{\rm{lw}} + Q_{\rm{h}}\mbox{,} \label{e_flux_eqn} … … 105 105 where $\zeta=\frac{D_T}{L}$. It is clear that the first derivative of 106 106 (\ref{stab_func_eqn}), and thus of (\ref{ecmwf1}), 107 is discontinuous at $\zeta=0$ ( i.e.$Q\rightarrow0$ in equation (\ref{ecmwf2})).107 is discontinuous at $\zeta=0$ ($i.e.$ $Q\rightarrow0$ in equation (\ref{ecmwf2})). 108 108 109 109 The two terms on the right hand side of (\ref{ecmwf1}) represent different processes.
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