Changeset 3066 for branches/2011/dev_UKM0_2011/DOC
- Timestamp:
- 2011-11-09T14:09:37+01:00 (13 years ago)
- Location:
- branches/2011/dev_UKM0_2011/DOC/TexFiles
- Files:
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- 3 edited
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branches/2011/dev_UKM0_2011/DOC/TexFiles/Biblio/Biblio.bib
r2541 r3066 1306 1306 volume = {23}, 1307 1307 pages = {2428--2446} 1308 } 1309 1310 @ARTICLE{Hunke2008, 1311 author = {E.C. Hunke and W.H. Lipscomb}, 1312 title = {CICE: the Los Alamos sea ice model documentation and software user's manual, 1313 Version 4.0}, 1314 publisher = {LA-CC-06-012, Los Alamos National Laboratory, N.M.}, 1315 year = {2008} 1308 1316 } 1309 1317 -
branches/2011/dev_UKM0_2011/DOC/TexFiles/Chapters/Chap_SBC.tex
r3065 r3066 920 920 ice-ocean fluxes, that are combined with the air-sea fluxes using the ice fraction of 921 921 each model cell to provide the surface ocean fluxes. Note that the activation of a 922 sea-ice model is is done by defining a CPP key (\key{lim2} or \key{lim3}).923 The activation automatically ove writethe read value of nn{\_}ice to its appropriate924 value ($i.e.$ $2$ for LIM-2 and $3$ for LIM-3).922 sea-ice model is is done by defining a CPP key (\key{lim2}, \key{lim3} or \key{cice}). 923 The activation automatically overwrites the read value of nn{\_}ice to its appropriate 924 value ($i.e.$ $2$ for LIM-2, $3$ for LIM-3 or $4$ for CICE). 925 925 \end{description} 926 926 927 927 % {Description of Ice-ocean interface to be added here or in LIM 2 and 3 doc ?} 928 929 \subsection [Interface to CICE (\textit{sbcice\_cice})] 930 {Interface to CICE (\mdl{sbcice\_cice})} 931 \label{SBC_cice} 932 933 It is now possible to couple a global NEMO configuration (without AGRIF) to the CICE sea-ice 934 model by using \key{cice}. The CICE code can be obtained from 935 \href{http://oceans11.lanl.gov/trac/CICE/}{LANL} and the additional 'hadgem3' drivers will be required, 936 even with the latest code release. Input grid files consistent with those used in NEMO will also be needed, 937 and CICE CPP keys \bf{ORCA_GRID}, \bf{CICE_IN_NEMO} and \bf{coupled} should be used (seek advice from UKMO 938 if necessary). Currently the code is only designed to work when using the CORE forcing option for NEMO (with 939 \textit{calc\_strair~=~true} and \textit{calc\_Tsfc~=~true} in the CICE name-list), or alternatively when NEMO 940 is coupled to the HadGAM3 atmosphere model (with \textit{calc\_strair~=~false} and \textit{calc\_Tsfc~=~false}). 941 The code is intended to be used with \np{nn\_fsbc} set to 1 (although coupling ocean and ice less frequently 942 should work, it is possible the calculation of some of the ocean-ice fluxes needs to be modified slightly - the 943 user should check that results are not significantly different to the standard case). 944 945 There are two options for the technical coupling between NEMO and CICE. The standard version allows 946 complete flexibility for the domain decompositions in the individual models, but this is at the expense of global 947 gather and scatter operations in the coupling which become very expensive on larger numbers of processors. The 948 alternative option (using \key{nemocice_decomp} for both NEMO and CICE) ensures that the domain decomposition is 949 identical in both models (provided domain parameters are set appropriately, and 950 \textit{processor\_shape~=~square-ice} and \textit{distribution\_wght~=~block} in the CICE name-list) and allows 951 much more efficient direct coupling on individual processors. This solution scales much better although it is at 952 the expense of having more idle CICE processors in areas where there is no sea ice. 953 928 954 929 955 % ------------------------------------------------------------------------------------------------------------- -
branches/2011/dev_UKM0_2011/DOC/TexFiles/Chapters/Introduction.tex
r2570 r3066 63 63 \citep{OASIS2006}. Two-way nesting is also available through an interface to the 64 64 AGRIF package (Adaptative Grid Refinement in \textsc{Fortran}) \citep{Debreu_al_CG2008}. 65 The interface code for coupling to an alternative sea ice model (CICE, \citet{Hunke2008}) is now 66 available although this is currently only designed for global domains, without the use of AGRIF. 65 67 66 68 Other model characteristics are the lateral boundary conditions (chapter~\ref{LBC}).
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