/[MITgcm]/MITgcm_contrib/MPMice/beaufort/CPL_README.txt
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revision 1.2 by dimitri, Thu Feb 2 18:14:09 2012 UTC revision 1.6 by dimitri, Wed Jan 1 00:20:40 2014 UTC
# Line 3  Initialization (myTime .EQ. startTime in Line 3  Initialization (myTime .EQ. startTime in
3  ===> Ocean Sends/ Ice Receives (fields that are sent only once)  ===> Ocean Sends/ Ice Receives (fields that are sent only once)
4  deltatimestep                1           Real*8  TimeIntervalTag  deltatimestep                1           Real*8  TimeIntervalTag
5  grid dimensions (Nx,Ny)      2           Integer OceanGridsizeTag  grid dimensions (Nx,Ny)      2           Integer OceanGridsizeTag
6  (grid locations - later?)  xG                           Nx*Ny       Real*8  xGtag
7    yG                           Nx*Ny       Real*8  yGtag
8    dxG                          Nx*Ny       Real*8  dxGtag
9    dyG                          Nx*Ny       Real*8  dxGtag
10    hFacC                        Nx*Ny       Real*8  hFacCtag
11  ice area                     Nx*Ny       Real*8  AreaTag  ice area                     Nx*Ny       Real*8  AreaTag
12  ice thickness                Nx*Ny       Real*8  HeffTag  ice thickness                Nx*Ny       Real*8  HeffTag
13  ice salinity                 Nx*Ny       Real*8  HsaltTag  ice salinity                 Nx*Ny       Real*8  HsaltTag
14  snow thickness               Nx*Ny       Real*8  HsnowTag  snow thickness               Nx*Ny       Real*8  HsnowTag
15    
 ===> Ocean Sends/ Ice Receives  
 ocean model time             1           Real*8  OceanTimeTag  
 boundary ice area            2*(Nx+Ny)-4 Real*8  AreaBcTag  
 boundary ice thickness       2*(Nx+Ny)-4 Real*8  HeffBcTag  
 boundary ice salinity        2*(Nx+Ny)-4 Real*8  HsaltBcTag  
 boundary snow thickness      2*(Nx+Ny)-4 Real*8  HsnowBcTag  
 boundary u ice               2*(Nx+Ny)-6 Real*8  UiceBcTag  
 boundary v ice               2*(Nx+Ny)-6 Real*8  ViceBcTag  
 u-wind velocity              Nx*Ny       Real*8  UwindTag  
 v-wind velocity              Nx*Ny       Real*8  VwindTag  
 downward longwave radiation  Nx*Ny       Real*8  LwDownTag  
 downward shortwave radiation Nx*Ny       Real*8  SwDownTag  
 air temperature              Nx*Ny       Real*8  AtempTag  
 humidity                     Nx*Ny       Real*8  AqhTag  
 precipitation                Nx*Ny       Real*8  PrecipTag  
 ocean surface temperature    Nx*Ny       Real*8  SstTag  
 surface u current            Nx*Ny       Real*8  UvelTag  
 surface v current            Nx*Ny       Real*8  VvelTag  
   
 ===> Ice Sends/Ocean Receives  
 ice model time               1           Real*8  IceTimeTag  
 ice area                     Nx*Ny       Real*8  AreaTag (initial ice area)  
 ice thickness                Nx*Ny       Real*8  HeffTag (initial ice thickness)  
 ice salinity                 Nx*Ny       Real*8  HsaltTag (initial ice salinity)  
 snow thickness               Nx*Ny       Real*8  HsnowTag (initial snow thickness)  
 u surface stress             Nx*Ny       Real*8  UstressTag (surface v current)  
 v surface stress             Nx*Ny       Real*8  VstressTag (array of 2)  
 residual shortwave           Nx*Ny       Real*8  SwResidTag (array of 1)  
 heat flux                    Nx*Ny       Real*8  HeatFluxTag (array of 1)  
 freshwater flux              Nx*Ny       Real*8  WaterFluxTag (array of 1)  
 salt flux                    Nx*Ny       Real*8  SaltFluxTag (array of 1)  
   
16  =====================================  =====================================
17    
18  Each deltatimestep:  Each deltatimestep:
# Line 61  air temperature              Nx*Ny Line 33  air temperature              Nx*Ny
33  humidity                     Nx*Ny       Real*8  AqhTag  humidity                     Nx*Ny       Real*8  AqhTag
34  precipitation                Nx*Ny       Real*8  PrecipTag  precipitation                Nx*Ny       Real*8  PrecipTag
35  ocean surface temperature    Nx*Ny       Real*8  SstTag  ocean surface temperature    Nx*Ny       Real*8  SstTag
36    ocean surface salinity       Nx*Ny       Real*8  SssTag
37  surface u current            Nx*Ny       Real*8  UvelTag  surface u current            Nx*Ny       Real*8  UvelTag
38  surface v current            Nx*Ny       Real*8  VvelTag  surface v current            Nx*Ny       Real*8  VvelTag
39    
# Line 70  ice area                     Nx*Ny Line 43  ice area                     Nx*Ny
43  ice thickness                Nx*Ny       Real*8  HeffTag  ice thickness                Nx*Ny       Real*8  HeffTag
44  ice salinity                 Nx*Ny       Real*8  HsaltTag  ice salinity                 Nx*Ny       Real*8  HsaltTag
45  snow thickness               Nx*Ny       Real*8  HsnowTag  snow thickness               Nx*Ny       Real*8  HsnowTag
46    u ice velocity               Nx*Ny       Real*8  UiceTag
47    v ice velocity               Nx*Ny       Real*8  ViceTag
48  u surface stress             Nx*Ny       Real*8  UstressTag  u surface stress             Nx*Ny       Real*8  UstressTag
49  v surface stress             Nx*Ny       Real*8  VstressTag  v surface stress             Nx*Ny       Real*8  VstressTag
50  residual shortwave           Nx*Ny       Real*8  SwResidTag  residual shortwave           Nx*Ny       Real*8  SwResidTag
# Line 95  deltatimestep                1 Line 70  deltatimestep                1
70    
71  grid dimensions (Nx,Ny)      2           Integer OceanGridsizeTag  grid dimensions (Nx,Ny)      2           Integer OceanGridsizeTag
72    
73    Some grid information - see MITgcm/model/inc/GRID.h for details:
74    xG  :: longitude East of SouthWest corner
75    yG  :: latitude North of SouthWest corner
76    dxG :: distance in m between SouthWest and SouthEast corner
77    dyG :: distance in m between SouthWest and NorthEast corner
78    
79  Then on tracer grid:  Then on tracer grid:
80    
81  NOT YET IMPLEMENTED: grid information + landmask  hFacC :: landmask of center of grid cell, 0 is land, >0 is ocean
82    
83  initial ice area (fractional: 0-1) at the tracer points  initial ice area (fractional: 0-1) at the tracer points
84  C     AREA  - fractional ice-covered area in m^2/m^2  C     AREA  - fractional ice-covered area in m^2/m^2
# Line 138  open boundary u-ice velocity Line 119  open boundary u-ice velocity
119  specified at the inside edge of the outer grid cells  specified at the inside edge of the outer grid cells
120  southwest C-grid locations for normal component and at the  southwest C-grid locations for normal component and at the
121  southwest C-grid locations for tangential  southwest C-grid locations for tangential
122  C     UICE  - zonal ice velocity in m/s at South-West B-grid  C     UICE  - zonal ice velocity in m/s at South-West C-grid U point
 C             (or C-grid #ifdef SEAICE_CGRID) U point  
123  C             >0 from West to East  C             >0 from West to East
124    
125  open boundary v-ice velocity  open boundary v-ice velocity
126  specified at the inside edge of the outer grid cells  specified at the inside edge of the outer grid cells
127  southwest C-grid locations for normal component and at the  southwest C-grid locations for normal component and at the
128  southwest C-grid locations for tangential  southwest C-grid locations for tangential
129  C     VICE  - meridional ice velocity in m/s at South-West B-grid  C     VICE  - meridional ice velocity in m/s at South-West C-grid V point
 C             (or C-grid #ifdef SEAICE_CGRID) V point  
130  C             >0 from South to North  C             >0 from South to North
 C             note: the South-West B-grid U and V points are on  
 C                the lower, left-hand corner of each grid cell  
131    
132  10-m u-wind at the tracer points  10-m u-wind at the tracer points
133  c     uwind     :: Surface (10-m) zonal wind velocity in m/s  c     uwind     :: Surface (10-m) zonal wind velocity in m/s
# Line 210  at southwest c-grid locations Line 187  at southwest c-grid locations
187  3. ice receives 2., computes initial ice conditions and sends on tracer grid  3. ice receives 2., computes initial ice conditions and sends on tracer grid
188    
189  ice model time (s)  ice model time (s)
190    
191  ice area at tracer point  ice area at tracer point
192    C     AREA  :: fractional ice-covered area in m^2/m^2
193    C              at center of grid, i.e., tracer point
194    C              0 is no cover, 1 is 100% cover
195    
196  ice thickness at tracer point  ice thickness at tracer point
197    C     HEFF  :: effective ice thickness in m
198    C              at center of grid, i.e., tracer point
199    C              note: for non-zero AREA,
200    C                    actual ice thickness is HEFF / AREA
201    
202  ice salinity at tracer point  ice salinity at tracer point
203    C     HSALT :: effective sea ice salinity in g/m^2
204    C              at center of grid, i.e., tracer point
205    
206  snow thickness at tracer point  snow thickness at tracer point
207  u-stress under ice at southwest b-grid locations  C     HSNOW :: effective snow thickness in m
208  v-stress under ice at southwest b-grid locations  C              at center of grid, i.e., tracer point
209    C              note: for non-zero AREA, actual snow thickness is HSNOW / AREA
210    
211    u ice velocity at southwest c-grid locations
212    C     UICE  - zonal ice velocity in m/s at South-West C-grid U point
213    C             >0 from West to East
214    
215    v ice velocity at southwest c-grid locations
216    C     VICE  - meridional ice velocity in m/s at South-West C-grid V point
217    C             >0 from South to North
218    
219    u-stress under ice at southwest c-grid locations
220    C     fu    :: Zonal surface wind stress in N/m^2
221    C              > 0 for increase in uVel, which is west to
222    C                  east for cartesian and spherical polar grids
223    C              Typical range: -0.5 < fu < 0.5
224    C              Southwest C-grid U point
225    
226    v-stress under ice at southwest c-grid locations
227    C     fv    :: Meridional surface wind stress in N/m^2
228    C              > 0 for increase in vVel, which is south to
229    C                  north for cartesian and spherical polar grids
230    C              Typical range: -0.5 < fv < 0.5
231    C              Southwest C-grid V point
232    
233  residual shortwave under ice at tracer point  residual shortwave under ice at tracer point
234    C     Qsw   :: Net upward shortwave radiation in W/m^2
235    C              Qsw = - ( downward - ice and snow absorption - reflected )
236    C              > 0 for decrease in theta (ocean cooling)
237    C              Typical range: -350 < Qsw < 0
238    C              Southwest C-grid tracer point
239    
240  heat flux (less shortwave) at tracer point  heat flux (less shortwave) at tracer point
241    C     HeatFlux
242    C           :: Upward surface heat flux (excluding shortwave) in W/m^2
243    C              HeatFlux = latent + sensible + net longwave
244    C              > 0 for decrease in theta (ocean cooling)
245    C              Typical range: 100 < Qnet < 950
246    C              Southwest C-grid tracer point
247    
248  freshwater flux at tracer point  freshwater flux at tracer point
249    C     EmPmR :: Net upward freshwater flux in kg/m2/s
250    C              EmPmR = Evaporation - precipitation - runoff
251    C              > 0 for increase in salt (ocean salinity)
252    C              Typical range: -1e-4 < EmPmR < 1e-4
253    C              Southwest C-grid tracer point
254    C           NOTE: for backward compatibility EmPmRfile is specified in
255    C                 m/s when using external_fields_load.F.  It is converted
256    C                 to kg/m2/s by multiplying by rhoConstFresh.
257    
258  salt flux at tracer point  salt flux at tracer point
259    C  saltFlux :: Net upward salt flux in psu.kg/m^2/s
260    C              flux of Salt taken out of the ocean per time unit (second).
261    C              Note: a) only used when salty sea-ice forms or melts.
262    C                    b) units: when salinity (unit= psu) is expressed
263    C                       in g/kg, saltFlux unit becomes g/m^2/s.
264    C              > 0 for decrease in SSS.
265    C              Southwest C-grid tracer point
266    
267  ===========================================================  ===========================================================
268    
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