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= '''ORCA2_LIM reference runs''' = 
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== A - Purposes: ==

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Document the changes from ORCA2-LIM  based on OPA8.2 and ORCA2-LIM base on last NEMO version
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Key changes to be documented:[[BR]]

# Existing one :
         * partial step representation of bottom topography
         * updated TKE physics (surface/internal wave breaking)
         * new sea-ice component (LIM-3)
	 * test (again) free-slip option

# Existing but not included in NEMO trunk :

         * Kz tides  including ITF specific formulation    (Laurent & Ariane PhD)
         * mesoscale eddy parametrisation :  added in momentum equations (Aiki)  (Claude/Gurvan   Japan)
         * 3 band light penetration (RGB)   (Sebastian  Japan)
         * Ocean color used to specified time-space varying light penetration   (Sebastian  Japan)
         * Diurnal cycle on qsr (from daily mean value)    (Sebastian  Japan)
         * New TKE physics #2 (MERCATOR)
         * New advection scheme on the vertical COMPACT (Laurent)
         * Time splitting over the vertical for the advection (Gurvan)
         * Freshwater input under Ice Shelves    (JMM DRAKKAR)

# Forth coming one :

         * Fox-Kemper vertical velocities around the MLD parameterization    (Gurvan & Xavier)         
         * Advective BBL 
         * bound Aeiv as a function of mean velocity 
         * add Aeiv = advection-diffusion equation  Eden et Greatbatch 2008-2009
	 * add 3D source for ice-shelf melting, runoff and cross-land adv
         * Code and test Gent coef. vertical dependence to N2
         * Background Kz as a function of latitutde
         * mesoscale eddy parametrisation :  Griffies scheme + Visbeck coefficient   (MetOffice, NOCS)
         * sensitivity of the ediss parameter  (MERCATOR)
         * npc reactivation (Claude/Gurvan)
         * conservative leap-frog (Matthieu)
         * vvl + conservative leap-frog (Matthieu)

== B - Ongoing simulations: ==

        # [wiki:private/ORCA2Runs/LIM2_tag_v3_2 ORCA2 + LIM 2.0 (Tag nemo_v3_2)]

        # [wiki:private/ORCA2Runs/LIM2 ORCA2 + LIM 2.0]

        # [wiki:private/ORCA2Runs/LIM3 ORCA2 + LIM 3.0]

== C - To do list/ Remaining Questions: ==

   * check climatological CORE bulk forcing fields computed during 1st and 2nd year
   * do moficiation to perfom annual mean outputs except the last year: OK
   * check with Martin that all ice parameters for LIM 3.0 are the best one for ORCA2_LIM.
   * ensure the upload of the STRAIT.dat file (transport through straits) : OK
   * rebuild the meshmask since the scale factors have been changed on some straits: OK

Questions to solve when setting the control simulation:[[BR]]
   * Damping term in the Red sea is not clear, strong differences with Levitus in this area, since it is reduced in dtatem.F90 ''' 2 check''' 
   * What are we doing with runoffs ? ''A: We used the standard climatology''
   * freswater budget, annual correction ? ''A: yes, in using the previous year ssh drift.''
   * Do we take into account the ice melting of Greenland and Antarctic into runoffs directly ?
   * advection scheme to use ? ''A: the TVD for tracers''
   * define the way to manage the wind speed .vs. the sea-ice/ocean velocity, i.e do the difference of fields
   * define the relaxation time scale for the SSS restoring term and define the area i.e. (global even under sea-ice ?) ''Done everywhere even under sea-ice, same restorint time scale (12 days) as for SST which require a value of deds= - 864 mm/day ''
   * use the corrected interpolated temp/ salinity fields in Arctic from PHC for initialization suggested by Sylvain Bouillon see ticket: #227; Conkright et al. (2002) everywhere except in Arctic and Steel et al. (2001) for Arctic region data for the initialization ? (See Core paper)
   * bathymetry review (  special treatment of straits Gibraltar, Bab El ..ec ) ''A: yes around Gibraltar and Bab El Mandeb straits with new depth, and a reduing of scale factors. ''


== D - Few characteristics of runs as a reminder: ==
   * perform internal damping (key_tradmp) ndmp = -1 around Gibraltat & Bab El Mandeb straits
   * SSS damping ln_sssr = true with a restoring time scale of 12 days (same as for SST) deds = -864 mm/day