Changeset 284 for trunk/LMDZ.MARS/README
- Timestamp:
- Sep 7, 2011, 3:20:37 PM (13 years ago)
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trunk/LMDZ.MARS/README
r283 r284 879 879 TODO: * calibrate thermal inertia and ice albedo 880 880 * have a look at subgrid-scale ice with dryness ? 881 882 == 07/09/2011 == AC 883 884 - Added new flag for the Richardson-based surface layer : 885 886 callrichsl, can be changed in callphys.def 887 888 One should always use the thermals model when using this surface layer model. 889 Somes cases (weakly unstable with low winds), when not using thermals, won't be well represented by the 890 Richardson surface layer. This stands for Mesoscale and Gcm but not for LES model. 891 892 Correct configs : 893 894 callrichsl = .true. 895 calltherm = .true. 896 897 callrichsl = .false. 898 calltherm = .false. 899 900 callrichsl = .false. 901 calltherm = .true. 902 903 Previously unstable config : 904 905 callrichsl = .true. 906 calltherm = .false. 907 908 - To be able to run without thermals and with the new surface layer, a modification has been made to 909 physiq.F to account for gustiness in GCM and MESOSCALE for negative Richardson, so that : 910 911 callrichsl = .true. 912 calltherm = .false. 913 914 can now be used without problems, but is not recommended. 915 916 - Consequently, callrichsl = .false. is now the default configuration for thermals. 917 918 We recall the available options in callphys.def for thermals : 919 920 outptherm = BOOLEAN (.false. by default) : outputs thermals related quantities (lots of diagfi) 921 nsplit_thermals = INTEGER (50 by default in gcm, 2 in mesoscale) : subtimestep for thermals model. 922 It is recommended to use at least 40 in the gcm, and at least 2 in the mesoscale. 923 The user can lower these values but should check it's log for anomalies or errors regarding 924 tracer transport in the thermals, or "granulosity" in the outputs for wmax, lmax and hfmax. 925
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