/[MITgcm]/MITgcm_contrib/MPMice/beaufort/CPL_README.txt
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revision 1.3 by dimitri, Fri Feb 3 14:10:31 2012 UTC revision 1.7 by dimitri, Thu Oct 2 22:02:55 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?)  
7    xC                           Nx*Ny       Real*8  xCtag
8    yC                           Nx*Ny       Real*8  yCtag
9    xG                           Nx*Ny       Real*8  xGtag
10    yG                           Nx*Ny       Real*8  yGtag
11    dxG                          Nx*Ny       Real*8  dxGtag
12    dyG                          Nx*Ny       Real*8  dxGtag
13    AngleCS                      Nx*Ny       Real*8  aCStag
14    AngleSN                      Nx*Ny       Real*8  aSNtag
15    hFacC                        Nx*Ny       Real*8  hFacCtag
16  ice area                     Nx*Ny       Real*8  AreaTag  ice area                     Nx*Ny       Real*8  AreaTag
17  ice thickness                Nx*Ny       Real*8  HeffTag  ice thickness                Nx*Ny       Real*8  HeffTag
18  ice salinity                 Nx*Ny       Real*8  HsaltTag  ice salinity                 Nx*Ny       Real*8  HsaltTag
19  snow thickness               Nx*Ny       Real*8  HsnowTag  snow thickness               Nx*Ny       Real*8  HsnowTag
20    
 ===> 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  
 ocean surface salinity       Nx*Ny       Real*8  SssTag  
 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)  
   
21  =====================================  =====================================
22    
23  Each deltatimestep:  Each deltatimestep:
# Line 72  ice area                     Nx*Ny Line 48  ice area                     Nx*Ny
48  ice thickness                Nx*Ny       Real*8  HeffTag  ice thickness                Nx*Ny       Real*8  HeffTag
49  ice salinity                 Nx*Ny       Real*8  HsaltTag  ice salinity                 Nx*Ny       Real*8  HsaltTag
50  snow thickness               Nx*Ny       Real*8  HsnowTag  snow thickness               Nx*Ny       Real*8  HsnowTag
51    u ice velocity               Nx*Ny       Real*8  UiceTag
52    v ice velocity               Nx*Ny       Real*8  ViceTag
53  u surface stress             Nx*Ny       Real*8  UstressTag  u surface stress             Nx*Ny       Real*8  UstressTag
54  v surface stress             Nx*Ny       Real*8  VstressTag  v surface stress             Nx*Ny       Real*8  VstressTag
55  residual shortwave           Nx*Ny       Real*8  SwResidTag  residual shortwave           Nx*Ny       Real*8  SwResidTag
# Line 97  deltatimestep                1 Line 75  deltatimestep                1
75    
76  grid dimensions (Nx,Ny)      2           Integer OceanGridsizeTag  grid dimensions (Nx,Ny)      2           Integer OceanGridsizeTag
77    
78    Some grid information - see MITgcm/model/inc/GRID.h for details:
79    xC  :: longitude East of center of grid cell
80    yC  ::latitude North of center of grid cell
81    xG  :: longitude East of SouthWest corner
82    yG  :: latitude North of SouthWest corner
83    dxG :: distance in m between SouthWest and SouthEast corner
84    dyG :: distance in m between SouthWest and NorthEast corner
85    
86    aCS :: cosine(alpha) relative to geographic direction at grid cell center
87    aSN :: sine(alpha) relative to geographic direction at grid cell center
88    
89           alpha = angle of model uVel direction vs geographical East
90                 = angle of model vVel direction vs geographical North
91           (AngleCS*uVelc - AngleSN*vVelc, AngleSN*uVelc + AngleCN*vVelc)
92           rotates model velocity to geographical coordinates, where
93           (uVelc,vVelc) is model velocity vector at center of grid cell
94    
95  Then on tracer grid:  Then on tracer grid:
96    
97  NOT YET IMPLEMENTED: grid information + landmask  hFacC :: landmask of center of grid cell, 0 is land, >0 is ocean
98    
99  initial ice area (fractional: 0-1) at the tracer points  initial ice area (fractional: 0-1) at the tracer points
100  C     AREA  - fractional ice-covered area in m^2/m^2  C     AREA  - fractional ice-covered area in m^2/m^2
# Line 140  open boundary u-ice velocity Line 135  open boundary u-ice velocity
135  specified at the inside edge of the outer grid cells  specified at the inside edge of the outer grid cells
136  southwest C-grid locations for normal component and at the  southwest C-grid locations for normal component and at the
137  southwest C-grid locations for tangential  southwest C-grid locations for tangential
138  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  
139  C             >0 from West to East  C             >0 from West to East
140    
141  open boundary v-ice velocity  open boundary v-ice velocity
142  specified at the inside edge of the outer grid cells  specified at the inside edge of the outer grid cells
143  southwest C-grid locations for normal component and at the  southwest C-grid locations for normal component and at the
144  southwest C-grid locations for tangential  southwest C-grid locations for tangential
145  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  
146  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  
147    
148  10-m u-wind at the tracer points  10-m u-wind at the tracer points
149  c     uwind     :: Surface (10-m) zonal wind velocity in m/s  c     uwind     :: Surface (10-m) zonal wind velocity in m/s
# Line 233  C     HSNOW :: effective snow thickness Line 224  C     HSNOW :: effective snow thickness
224  C              at center of grid, i.e., tracer point  C              at center of grid, i.e., tracer point
225  C              note: for non-zero AREA, actual snow thickness is HSNOW / AREA  C              note: for non-zero AREA, actual snow thickness is HSNOW / AREA
226    
227    u ice velocity at southwest c-grid locations
228    C     UICE  - zonal ice velocity in m/s at South-West C-grid U point
229    C             >0 from West to East
230    
231    v ice velocity at southwest c-grid locations
232    C     VICE  - meridional ice velocity in m/s at South-West C-grid V point
233    C             >0 from South to North
234    
235  u-stress under ice at southwest c-grid locations  u-stress under ice at southwest c-grid locations
236  C     fu    :: Zonal surface wind stress in N/m^2  C     fu    :: Zonal surface wind stress in N/m^2
237  C              > 0 for increase in uVel, which is west to  C              > 0 for increase in uVel, which is west to
# Line 255  C              Typical range: -350 < Qsw Line 254  C              Typical range: -350 < Qsw
254  C              Southwest C-grid tracer point  C              Southwest C-grid tracer point
255    
256  heat flux (less shortwave) at tracer point  heat flux (less shortwave) at tracer point
257  C     Qnet  :: Net upward surface heat flux (including shortwave) in W/m^2  C     HeatFlux
258  C              Qnet = latent + sensible + net longwave + net shortwave  C           :: Upward surface heat flux (excluding shortwave) in W/m^2
259    C              HeatFlux = latent + sensible + net longwave
260  C              > 0 for decrease in theta (ocean cooling)  C              > 0 for decrease in theta (ocean cooling)
261  C              Typical range: -250 < Qnet < 600  C              Typical range: 100 < Qnet < 950
262  C              Southwest C-grid tracer point  C              Southwest C-grid tracer point
263    
264  freshwater flux at tracer point  freshwater flux at tracer point
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