*IF DEF,CONTROL,AND,DEF,ATMOS,AND,DEF,OCEAN                                INITA2O1.2      
C ******************************COPYRIGHT******************************    GTS2F400.4609   
C (c) CROWN COPYRIGHT 1995, METEOROLOGICAL OFFICE, All Rights Reserved.    GTS2F400.4610   
C                                                                          GTS2F400.4611   
C Use, duplication or disclosure of this code is subject to the            GTS2F400.4612   
C restrictions as set forth in the contract.                               GTS2F400.4613   
C                                                                          GTS2F400.4614   
C                Meteorological Office                                     GTS2F400.4615   
C                London Road                                               GTS2F400.4616   
C                BRACKNELL                                                 GTS2F400.4617   
C                Berkshire UK                                              GTS2F400.4618   
C                RG12 2SZ                                                  GTS2F400.4619   
C                                                                          GTS2F400.4620   
C If no contract has been raised with this copy of the code, the use,      GTS2F400.4621   
C duplication or disclosure of it is strictly prohibited.  Permission      GTS2F400.4622   
C to do so must first be obtained in writing from the Head of Numerical    GTS2F400.4623   
C Modelling at the above address.                                          GTS2F400.4624   
C ******************************COPYRIGHT******************************    GTS2F400.4625   
C                                                                          GTS2F400.4626   
CLL  Routine: INIT_A2O -------------------------------------------------   INITA2O1.3      
CLL                                                                        INITA2O1.4      
CLL  Purpose: Initialises address pointers needed by SWAP_A2O and          INITA2O1.5      
CLL           SWAP_O2A when running in coupled mode.  Subroutine           INITA2O1.6      
CLL           FINDPTR is used, in this instance searching the STASHlist    INITA2O1.7      
CLL           on section/item codes and STASHmacro tagging information.    INITA2O1.8      
CLL           Atmosphere/ocean coupling fields are tagged with a 10 or     INITA2O1.9      
CLL           11 depending on the sense of the transfer.                   INITA2O1.10     
CLL                                                                        INITA2O1.11     
CLL  Tested under compiler:   cft77                                        INITA2O1.12     
CLL  Tested under OS version: UNICOS 5.1                                   INITA2O1.13     
CLL                                                                        INITA2O1.14     
CLL  Author:   T.C.Johns                                                   INITA2O1.15     
CLL                                                                        INITA2O1.16     
CLL  Code version no: 1.4         Date: 12 May 1992                        INITA2O1.17     
CLL                                                                        INITA2O1.18     
CLL  Model            Modification history from model version 3.0:         INITA2O1.19     
CLL version  date                                                          INITA2O1.20     
CLL  3.2  18/06/93 : Changes for dynamic allocation (TCJ).                 @DYALLOC.1339   
CLL  3.5  June 95    Submodels project                                     GSS2F305.113    
CLL                  Added internal model to FINDPTR args                  GSS2F305.114    
CLL                  S.J.Swarbrick                                         GSS2F305.115    
CLL  3.5  05/06/95  Chgs to SI array.  RTHBarnes                           GRB4F305.261    
CLL  4.2  22/11/96  Chgs to allow uncompressed ocean dumps. SI             GSI0F402.1      
CLL  4.3  30/01/97  Correction: change local sizes IMT,etc to global       GRR0F403.256    
CLL                 domain sizes AOCPL_IMT,etc. R.Rawlins.                 GRR0F403.257    
CLL  4.5   1/07/98  Include code to pass atmospheric surface CO2           CCN1F405.24     
CLL                                                    C.D.Jones           CCN1F405.25     
CLL                                                                        INITA2O1.21     
CLL  Programming standard: UM Doc Paper 3, version 2 (7/9/90)              INITA2O1.22     
CLL                                                                        INITA2O1.23     
CLL  Logical components covered: C11                                       INITA2O1.24     
CLL                                                                        INITA2O1.25     
CLL  Project task: C0                                                      INITA2O1.26     
CLL                                                                        INITA2O1.27     
CLL  External documentation:                                               INITA2O1.28     
CLL    Unified Model Doc Paper C0 - The top-level control system           INITA2O1.29     
CLL                                                                        INITA2O1.30     
CLL  -------------------------------------------------------------------   INITA2O1.31     
C*L  Interface and arguments: ------------------------------------------   INITA2O1.32     
C                                                                          INITA2O1.33     

      SUBROUTINE INIT_A2O (                                                 1,19@DYALLOC.1340   
*CALL ARGSIZE                                                              @DYALLOC.1341   
*CALL ARGD1                                                                @DYALLOC.1342   
*CALL ARGSTS                                                               @DYALLOC.1343   
*CALL ARGDUMA                                                              @DYALLOC.1344   
*CALL ARGDUMO                                                              @DYALLOC.1345   
*CALL ARGPTRA                                                              @DYALLOC.1346   
*CALL ARGPTRO                                                              @DYALLOC.1347   
*CALL ARGAOCPL                                                             @DYALLOC.1348   
     *                      ICODE,CMESSAGE )                               @DYALLOC.1349   
C                                                                          INITA2O1.35     
      IMPLICIT NONE                                                        INITA2O1.36     
C                                                                          @DYALLOC.1350   
*CALL CSUBMODL                                                             GSS2F305.116    
*CALL CNTLATM                                                              CCN1F405.26     
*CALL TYPSIZE                                                              @DYALLOC.1351   
*CALL TYPD1                                                                @DYALLOC.1352   
*CALL TYPSTS                                                               @DYALLOC.1353   
*CALL TYPDUMA                                                              @DYALLOC.1354   
*CALL TYPDUMO                                                              @DYALLOC.1355   
*CALL TYPPTRA                                                              @DYALLOC.1356   
*CALL TYPPTRO                                                              @DYALLOC.1357   
*CALL TYPAOCPL                                                             @DYALLOC.1358   
C                                                                          INITA2O1.37     
      INTEGER ICODE                        ! OUT - Error return code       INITA2O1.38     
      CHARACTER*(*) CMESSAGE               ! OUT - Error return message    INITA2O1.39     
C*----------------------------------------------------------------------   INITA2O1.40     
C  Common blocks                                                           INITA2O1.41     
C                                                                          INITA2O1.42     
*CALL CAOPTR                                                               @DYALLOC.1359   
*CALL C_MDI                                                                INITA2O1.47     
*CALL STPARAM                                                              INITA2O1.48     
C                                                                          INITA2O1.49     
C  Subroutines called                                                      INITA2O1.50     
C                                                                          INITA2O1.51     
      EXTERNAL FINDPTR                                                     INITA2O1.52     
C                                                                          INITA2O1.53     
C  Local variables                                                         INITA2O1.54     
C                                                                          INITA2O1.55     
      INTEGER                                                              INITA2O1.56     
     &       PROCESS_CODE,                  ! Processing code              INITA2O1.57     
     &       FREQ_CODE,                     ! Frequency code               INITA2O1.58     
     &       START,END,PERIOD,              ! Start, end and period step   INITA2O1.59     
     &       GRIDPT_CODE,WEIGHT_CODE,       ! Gridpt and weighting codes   INITA2O1.60     
     &       BOTTOM_LEVEL,TOP_LEVEL,        ! Bottom and top input level   INITA2O1.61     
     &       GRID_N,GRID_S,GRID_W,GRID_E,   ! Grid corner definitions      INITA2O1.62     
     &       STASHMACRO_TAG,                ! STASHmacro tag number        INITA2O1.63     
     &       I,J                            ! Working indices              INITA2O1.64     
     &      ,IM_IDENT      ! internal model identifier                     GRB4F305.262    
     &      ,IM_INDEX      ! internal model index for STASH arrays         GRB4F305.263    
CL----------------------------------------------------------------------   INITA2O1.65     
CL 0.  Set grid definition information (undefined as search is on          INITA2O1.66     
CL     STASHmacro tag number)                                              INITA2O1.67     
CL                                                                         INITA2O1.68     
      PROCESS_CODE=IMDI                                                    INITA2O1.69     
      FREQ_CODE=IMDI                                                       INITA2O1.70     
      START=IMDI                                                           INITA2O1.71     
      END=IMDI                                                             INITA2O1.72     
      PERIOD=IMDI                                                          INITA2O1.73     
      GRIDPT_CODE=IMDI                                                     INITA2O1.74     
      WEIGHT_CODE=IMDI                                                     INITA2O1.75     
      BOTTOM_LEVEL=IMDI                                                    INITA2O1.76     
      TOP_LEVEL=IMDI                                                       INITA2O1.77     
      GRID_N=IMDI                                                          INITA2O1.78     
      GRID_S=IMDI                                                          INITA2O1.79     
      GRID_E=IMDI                                                          INITA2O1.80     
      GRID_W=IMDI                                                          INITA2O1.81     
                                                                           GRB4F305.264    
C  Set up internal model identifier and STASH index                        GRB4F305.265    
      im_ident = atmos_im                                                  GRB4F305.266    
      im_index = internal_model_index(im_ident)                            GRB4F305.267    
                                                                           GRB4F305.268    
CL----------------------------------------------------------------------   INITA2O1.82     
CL 1.  Get address for each field from its STASH section/item code         INITA2O1.83     
CL     and STASHmacro tag if a diagnostic, or from its primary pointer     INITA2O1.84     
CL     if prognostic or ancillary field                                    INITA2O1.85     
CL     Atmosphere -> Ocean (tag=10)                                        INITA2O1.86     
CL                                                                         INITA2O1.87     
      STASHMACRO_TAG=10                                                    INITA2O1.88     
                                                                           INITA2O1.89     
CL 1.1 Surface windstress on atmos grid - x-component                      INITA2O1.90     
      CALL FINDPTR(ATMOS_IM, 3,219,                                        GSS2F305.117    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.92     
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.93     
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.94     
     &             STASHMACRO_TAG,IMDI,JA_TAUX,                            @DYALLOC.1360   
*CALL ARGSIZE                                                              @DYALLOC.1361   
*CALL ARGSTS                                                               @DYALLOC.1362   
     &                     ICODE,CMESSAGE)                                 @DYALLOC.1363   
      IF (JA_TAUX.EQ.0) THEN                                               INITA2O1.98     
        ICODE=3219                                                         INITA2O1.99     
        CMESSAGE="INIT_A2O: Coupling field not enabled - taux atmos"       INITA2O1.100    
      ENDIF                                                                INITA2O1.101    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.102    
                                                                           INITA2O1.103    
CL 1.2 Surface windstress on ocean grid - x-component                      INITA2O1.104    
      JO_TAUX=joc_taux                                                     INITA2O1.105    
      IF (JO_TAUX.EQ.0) THEN                                               INITA2O1.106    
        ICODE=150                                                          INITA2O1.107    
        CMESSAGE="INIT_A2O: Coupling field not enabled - taux ocean"       INITA2O1.108    
      ENDIF                                                                INITA2O1.109    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.110    
                                                                           INITA2O1.111    
CL 1.3 Surface windstress on atmos grid - y-component                      INITA2O1.112    
      CALL FINDPTR(ATMOS_IM, 3,220,                                        GSS2F305.118    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.114    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.115    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.116    
     &             STASHMACRO_TAG,IMDI,JA_TAUY,                            @DYALLOC.1364   
*CALL ARGSIZE                                                              @DYALLOC.1365   
*CALL ARGSTS                                                               @DYALLOC.1366   
     &                     ICODE,CMESSAGE)                                 @DYALLOC.1367   
      IF (JA_TAUY.EQ.0) THEN                                               INITA2O1.120    
        ICODE=3220                                                         INITA2O1.121    
        CMESSAGE="INIT_A2O: Coupling field not enabled - tauy atmos"       INITA2O1.122    
      ENDIF                                                                INITA2O1.123    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.124    
                                                                           INITA2O1.125    
CL 1.4 Surface windstress on ocean grid - y-component                      INITA2O1.126    
      JO_TAUY=joc_tauy                                                     INITA2O1.127    
      IF (JO_TAUY.EQ.0) THEN                                               INITA2O1.128    
        ICODE=151                                                          INITA2O1.129    
        CMESSAGE="INIT_A2O: Coupling field not enabled - tauy ocean"       INITA2O1.130    
      ENDIF                                                                INITA2O1.131    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.132    
                                                                           INITA2O1.133    
CL 1.5 Windmixing power on atmos grid                                      INITA2O1.134    
      CALL FINDPTR(ATMOS_IM, 3,224,                                        GSS2F305.119    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.136    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.137    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.138    
     &             STASHMACRO_TAG,IMDI,JA_WINDMIX,                         @DYALLOC.1368   
*CALL ARGSIZE                                                              @DYALLOC.1369   
*CALL ARGSTS                                                               @DYALLOC.1370   
     &                        ICODE,CMESSAGE)                              @DYALLOC.1371   
      IF (JA_WINDMIX.EQ.0) THEN                                            INITA2O1.142    
        ICODE=3224                                                         INITA2O1.143    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Windmixing atm"   INITA2O1.144    
      ENDIF                                                                INITA2O1.145    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.146    
                                                                           INITA2O1.147    
CL 1.6 Windmixing power on ocean grid                                      INITA2O1.148    
      JO_WINDMIX=joc_wme                                                   INITA2O1.149    
      IF (JO_WINDMIX.EQ.0) THEN                                            INITA2O1.150    
        ICODE=152                                                          INITA2O1.151    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Windmixing ocn"   INITA2O1.152    
      ENDIF                                                                INITA2O1.153    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.154    
                                                                           INITA2O1.155    
CL 1.7 Net integrated downward solar on atmos grid                         INITA2O1.156    
      CALL FINDPTR(ATMOS_IM, 1,203,                                        GSS2F305.120    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.158    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.159    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.160    
     &             STASHMACRO_TAG,IMDI,JA_SOLAR,                           @DYALLOC.1372   
*CALL ARGSIZE                                                              @DYALLOC.1373   
*CALL ARGSTS                                                               @DYALLOC.1374   
     &                      ICODE,CMESSAGE)                                @DYALLOC.1375   
      IF (JA_SOLAR.EQ.0) THEN                                              INITA2O1.164    
        ICODE=1203                                                         INITA2O1.165    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Net solar"        INITA2O1.166    
      ENDIF                                                                INITA2O1.167    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.168    
                                                                           INITA2O1.169    
CL 1.8 Net downward blueband solar on atmos grid                           INITA2O1.170    
      CALL FINDPTR(ATMOS_IM, 1,204,                                        GSS2F305.121    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.172    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.173    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.174    
     &             STASHMACRO_TAG,IMDI,JA_BLUE,                            @DYALLOC.1376   
*CALL ARGSIZE                                                              @DYALLOC.1377   
*CALL ARGSTS                                                               @DYALLOC.1378   
     &                     ICODE,CMESSAGE)                                 @DYALLOC.1379   
      IF (JA_BLUE.EQ.0) THEN                                               INITA2O1.178    
        ICODE=1204                                                         INITA2O1.179    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Blue solar atm"   INITA2O1.180    
      ENDIF                                                                INITA2O1.181    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.182    
                                                                           INITA2O1.183    
CL 1.9 Net downward blueband solar on ocean grid                           INITA2O1.184    
      JO_BLUE=joc_solar                                                    INITA2O1.185    
      IF (JO_BLUE.EQ.0) THEN                                               INITA2O1.186    
        ICODE=161                                                          INITA2O1.187    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Blue solar ocn"   INITA2O1.188    
      ENDIF                                                                INITA2O1.189    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.190    
                                                                           INITA2O1.191    
CL 1.10 Surface evaporation over sea weighted by fractional leads          INITA2O1.192    
      CALL FINDPTR(ATMOS_IM, 3,232,                                        GSS2F305.122    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.194    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.195    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.196    
     &             STASHMACRO_TAG,IMDI,JA_EVAP,                            @DYALLOC.1380   
*CALL ARGSIZE                                                              @DYALLOC.1381   
*CALL ARGSTS                                                               @DYALLOC.1382   
     &                     ICODE,CMESSAGE)                                 @DYALLOC.1383   
      IF (JA_EVAP.EQ.0) THEN                                               INITA2O1.200    
        ICODE=3232                                                         INITA2O1.201    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Evap over sea"    INITA2O1.202    
      ENDIF                                                                INITA2O1.203    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.204    
                                                                           INITA2O1.205    
CL 1.11 Net downward longwave on atmos grid                                INITA2O1.206    
      CALL FINDPTR(ATMOS_IM, 2,203,                                        GSS2F305.123    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.208    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.209    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.210    
     &             STASHMACRO_TAG,IMDI,JA_LONGWAVE,                        @DYALLOC.1384   
*CALL ARGSIZE                                                              @DYALLOC.1385   
*CALL ARGSTS                                                               @DYALLOC.1386   
     &                         ICODE,CMESSAGE)                             @DYALLOC.1387   
      IF (JA_LONGWAVE.EQ.0) THEN                                           INITA2O1.214    
        ICODE=2203                                                         INITA2O1.215    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Longwave"         INITA2O1.216    
      ENDIF                                                                INITA2O1.217    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.218    
                                                                           INITA2O1.219    
CL 1.12 Sensible heat on atmos grid, area mean over open sea               INITA2O1.220    
      CALL FINDPTR(ATMOS_IM, 3,228,                                        GSS2F305.124    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.222    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.223    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.224    
     &             STASHMACRO_TAG,IMDI,JA_SENSIBLE,                        @DYALLOC.1388   
*CALL ARGSIZE                                                              @DYALLOC.1389   
*CALL ARGSTS                                                               @DYALLOC.1390   
     &                         ICODE,CMESSAGE)                             @DYALLOC.1391   
      IF (JA_SENSIBLE.EQ.0) THEN                                           INITA2O1.228    
        ICODE=3228                                                         INITA2O1.229    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Sensible heat"    INITA2O1.230    
      ENDIF                                                                INITA2O1.231    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.232    
                                                                           INITA2O1.233    
CL 1.13 Non-penetrative heat flux into ocean                               INITA2O1.234    
      JO_HEATFLUX=joc_heat                                                 INITA2O1.235    
      IF (JO_HEATFLUX.EQ.0) THEN                                           INITA2O1.236    
        ICODE=162                                                          INITA2O1.237    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Non-pen heat"     INITA2O1.238    
      ENDIF                                                                INITA2O1.239    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.240    
                                                                           INITA2O1.241    
CL 1.14 Large-scale snowfall rate on atmos grid                            INITA2O1.242    
      CALL FINDPTR(ATMOS_IM, 4,204,                                        GSS2F305.125    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.244    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.245    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.246    
     &             STASHMACRO_TAG,IMDI,JA_LSSNOW,                          @DYALLOC.1392   
*CALL ARGSIZE                                                              @DYALLOC.1393   
*CALL ARGSTS                                                               @DYALLOC.1394   
     &                       ICODE,CMESSAGE)                               @DYALLOC.1395   
      IF (JA_LSSNOW.EQ.0) THEN                                             INITA2O1.250    
        ICODE=4204                                                         INITA2O1.251    
        CMESSAGE="INIT_A2O: Coupling field not enabled - LS Snow"          INITA2O1.252    
      ENDIF                                                                INITA2O1.253    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.254    
                                                                           INITA2O1.255    
CL 1.15 Convective snowfall rate on atmos grid                             INITA2O1.256    
      CALL FINDPTR(ATMOS_IM, 5,206,                                        GSS2F305.126    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.258    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.259    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.260    
     &             STASHMACRO_TAG,IMDI,JA_CVSNOW,                          @DYALLOC.1396   
*CALL ARGSIZE                                                              @DYALLOC.1397   
*CALL ARGSTS                                                               @DYALLOC.1398   
     &                       ICODE,CMESSAGE)                               @DYALLOC.1399   
      IF (JA_CVSNOW.EQ.0) THEN                                             INITA2O1.264    
        ICODE=5206                                                         INITA2O1.265    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Conv Snow"        INITA2O1.266    
      ENDIF                                                                INITA2O1.267    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.268    
                                                                           INITA2O1.269    
CL 1.16 Large-scale rainfall rate on atmos grid                            INITA2O1.270    
      CALL FINDPTR(ATMOS_IM, 4,203,                                        GSS2F305.127    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.272    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.273    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.274    
     &             STASHMACRO_TAG,IMDI,JA_LSRAIN,                          @DYALLOC.1400   
*CALL ARGSIZE                                                              @DYALLOC.1401   
*CALL ARGSTS                                                               @DYALLOC.1402   
     &                       ICODE,CMESSAGE)                               @DYALLOC.1403   
      IF (JA_LSRAIN.EQ.0) THEN                                             INITA2O1.278    
        ICODE=4203                                                         INITA2O1.279    
        CMESSAGE="INIT_A2O: Coupling field not enabled - LS Rain"          INITA2O1.280    
      ENDIF                                                                INITA2O1.281    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.282    
                                                                           INITA2O1.283    
CL 1.17 Convective rainfall rate on atmos grid                             INITA2O1.284    
      CALL FINDPTR(ATMOS_IM, 5,205,                                        GSS2F305.128    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.286    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.287    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.288    
     &             STASHMACRO_TAG,IMDI,JA_CVRAIN,                          @DYALLOC.1404   
*CALL ARGSIZE                                                              @DYALLOC.1405   
*CALL ARGSTS                                                               @DYALLOC.1406   
     &                       ICODE,CMESSAGE)                               @DYALLOC.1407   
      IF (JA_CVRAIN.EQ.0) THEN                                             INITA2O1.292    
        ICODE=5205                                                         INITA2O1.293    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Conv Rain"        INITA2O1.294    
      ENDIF                                                                INITA2O1.295    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.296    
                                                                           INITA2O1.297    
CL 1.18 Net precipitation-evaporation rate on ocean grid                   INITA2O1.298    
      JO_PMINUSE=joc_ple                                                   INITA2O1.299    
      IF (JO_PMINUSE.EQ.0) THEN                                            INITA2O1.300    
        ICODE=165                                                          INITA2O1.301    
        CMESSAGE="INIT_A2O: Coupling field not enabled - P minus E"        INITA2O1.302    
      ENDIF                                                                INITA2O1.303    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.304    
                                                                           INITA2O1.305    
                                                                           INITA2O1.306    
*IF DEF,SEAICE                                                             INITA2O1.307    
                                                                           INITA2O1.308    
CL 1.19 Seaice fractional conc. on atmos grid - this is an ancillary       INITA2O1.309    
CL      field in atmosphere-only configuration so use primary pointer.     INITA2O1.310    
                                                                           INITA2O1.311    
      JA_AICE=JICE_FRACTION                                                INITA2O1.312    
      IF (JA_AICE.EQ.0) THEN                                               INITA2O1.313    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Seaice conc."     INITA2O1.314    
      ENDIF                                                                INITA2O1.315    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.316    
                                                                           INITA2O1.317    
CL 1.20 Sublimation on atmos grid                                          INITA2O1.318    
                                                                           INITA2O1.319    
      STASHMACRO_TAG=10                                                    INITA2O1.320    
      CALL FINDPTR(ATMOS_IM, 3,231,                                        GSS2F305.129    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.322    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.323    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.324    
     &             STASHMACRO_TAG,IMDI,JA_SUBLIM,                          @DYALLOC.1408   
*CALL ARGSIZE                                                              @DYALLOC.1409   
*CALL ARGSTS                                                               @DYALLOC.1410   
     &                       ICODE,CMESSAGE)                               @DYALLOC.1411   
      IF (JA_SUBLIM.EQ.0) THEN                                             INITA2O1.328    
        ICODE=3231                                                         INITA2O1.329    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Sublimation"      INITA2O1.330    
      ENDIF                                                                INITA2O1.331    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.332    
                                                                           INITA2O1.333    
CL 1.21 BOTMELT on atmos grid                                              INITA2O1.334    
      CALL FINDPTR(ATMOS_IM, 3,201,                                        GSS2F305.130    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.336    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.337    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.338    
     &             STASHMACRO_TAG,IMDI,JA_BOTMELT,                         @DYALLOC.1412   
*CALL ARGSIZE                                                              @DYALLOC.1413   
*CALL ARGSTS                                                               @DYALLOC.1414   
     &                        ICODE,CMESSAGE)                              @DYALLOC.1415   
      IF (JA_BOTMELT.EQ.0) THEN                                            INITA2O1.342    
        ICODE=3201                                                         INITA2O1.343    
        CMESSAGE="INIT_A2O: Coupling field not enabled - BOTMELT"          INITA2O1.344    
      ENDIF                                                                INITA2O1.345    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.346    
                                                                           INITA2O1.347    
CL 1.22 TOPMELT on atmos grid                                              INITA2O1.348    
      CALL FINDPTR(ATMOS_IM, 3,235,                                        GSS2F305.131    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.350    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.351    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.352    
     &             STASHMACRO_TAG,IMDI,JA_TOPMELT,                         @DYALLOC.1416   
*CALL ARGSIZE                                                              @DYALLOC.1417   
*CALL ARGSTS                                                               @DYALLOC.1418   
     &                        ICODE,CMESSAGE)                              @DYALLOC.1419   
      IF (JA_TOPMELT.EQ.0) THEN                                            INITA2O1.356    
        ICODE=3235                                                         INITA2O1.357    
        CMESSAGE="INIT_A2O: Coupling field not enabled - TOPMELT"          INITA2O1.358    
      ENDIF                                                                INITA2O1.359    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.360    
                                                                           INITA2O1.361    
CL 1.23 Snowfall rate on ocean grid                                        INITA2O1.362    
      JO_SNOWFALL=joc_snowrate                                             INITA2O1.363    
      IF (JO_SNOWFALL.EQ.0) THEN                                           INITA2O1.364    
        ICODE=171                                                          INITA2O1.365    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Snowfall rate"    INITA2O1.366    
      ENDIF                                                                INITA2O1.367    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.368    
                                                                           INITA2O1.369    
CL 1.24 Sublimation rate on ocean grid                                     INITA2O1.370    
      JO_SUBLIM=joc_sublim                                                 INITA2O1.371    
      IF (JO_SUBLIM.EQ.0) THEN                                             INITA2O1.372    
        ICODE=172                                                          INITA2O1.373    
        CMESSAGE="INIT_A2O: Coupling field not enabled - Sublim rate"      INITA2O1.374    
      ENDIF                                                                INITA2O1.375    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.376    
                                                                           INITA2O1.377    
CL 1.25 Diffusive heatflux through ice on ocean grid                       INITA2O1.378    
      JO_BOTMELT=joc_botmelt                                               INITA2O1.379    
      IF (JO_BOTMELT.EQ.0) THEN                                            INITA2O1.380    
        ICODE=191                                                          INITA2O1.381    
        CMESSAGE="INIT_A2O: Coupling field not enabled - BOTMELT"          INITA2O1.382    
      ENDIF                                                                INITA2O1.383    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.384    
                                                                           INITA2O1.385    
CL 1.26 Top melting heat flux on ocean grid                                INITA2O1.386    
      JO_TOPMELT=joc_topmelt                                               INITA2O1.387    
      IF (JO_TOPMELT.EQ.0) THEN                                            INITA2O1.388    
        ICODE=190                                                          INITA2O1.389    
        CMESSAGE="INIT_A2O: Coupling field not enabled - TOPMELT"          INITA2O1.390    
      ENDIF                                                                INITA2O1.391    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.392    
                                                                           INITA2O1.393    
*ENDIF                                                                     INITA2O1.394    
*IF DEF,RIVERS                                                             INITA2O1.395    
                                                                           INITA2O1.396    
CL 1.27 SLOW runoff on atmos grid                                          INITA2O1.397    
      CALL FINDPTR(ATMOS_IM, 8,205,                                        GSS2F305.132    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.399    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.400    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.401    
     &             STASHMACRO_TAG,IMDI,JA_SLOWRUNOFF,                      @DYALLOC.1420   
*CALL ARGSIZE                                                              @DYALLOC.1421   
*CALL ARGSTS                                                               @DYALLOC.1422   
     &                           ICODE,CMESSAGE)                           @DYALLOC.1423   
      IF (JA_SLOWRUNOFF.EQ.0) THEN                                         INITA2O1.405    
        ICODE=8205                                                         INITA2O1.406    
        CMESSAGE="INIT_A2O: Coupling field not enabled - SLOW runoff"      INITA2O1.407    
      ENDIF                                                                INITA2O1.408    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.409    
                                                                           INITA2O1.410    
CL 1.28 FAST runoff on atmos grid                                          INITA2O1.411    
      CALL FINDPTR(ATMOS_IM, 8,204,                                        GSS2F305.133    
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                INITA2O1.413    
     &             GRIDPT_CODE,WEIGHT_CODE,                                INITA2O1.414    
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     INITA2O1.415    
     &             STASHMACRO_TAG,IMDI,JA_FASTRUNOFF,                      @DYALLOC.1424   
*CALL ARGSIZE                                                              @DYALLOC.1425   
*CALL ARGSTS                                                               @DYALLOC.1426   
     &                           ICODE,CMESSAGE)                           @DYALLOC.1427   
      IF (JA_FASTRUNOFF.EQ.0) THEN                                         INITA2O1.419    
        ICODE=8204                                                         INITA2O1.420    
        CMESSAGE="INIT_A2O: Coupling field not enabled - FAST runoff"      INITA2O1.421    
      ENDIF                                                                INITA2O1.422    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.423    
                                                                           INITA2O1.424    
CL 1.29 Ocean entry point index field (primary data field)                 INITA2O1.425    
      JA_OCENTPTS=SI(93,0,im_index)                                        GRB4F305.269    
      IF (JA_OCENTPTS.EQ.0) THEN                                           INITA2O1.427    
        ICODE=93                                                           INITA2O1.428    
        CMESSAGE="INIT_A2O: Coupling field not enabled - OC entry pts"     INITA2O1.429    
      ENDIF                                                                INITA2O1.430    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.431    
                                                                           INITA2O1.432    
CL 1.30 Total river outflow on ocean grid                                  INITA2O1.433    
      JO_RIVEROUT=joc_river                                                INITA2O1.434    
      IF (JO_RIVEROUT.EQ.0) THEN                                           INITA2O1.435    
        ICODE=166                                                          INITA2O1.436    
        CMESSAGE="INIT_A2O: Coupling field not enabled - river outflow"    INITA2O1.437    
      ENDIF                                                                INITA2O1.438    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.439    
                                                                           INITA2O1.440    
*ENDIF                                                                     INITA2O1.441    
      IF (L_CO2_INTERACTIVE) THEN                                          CCN1F405.27     
CL 1.31 Atmospheric level 1 CO2 concentration                              CCN1F405.28     
        CALL FINDPTR(ATMOS_IM, 0,252,                                      CCN1F405.29     
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                CCN1F405.30     
     &             GRIDPT_CODE,WEIGHT_CODE,                                CCN1F405.31     
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     CCN1F405.32     
     &             STASHMACRO_TAG,IMDI,JA_co2,                             CCN1F405.33     
*CALL ARGSIZE                                                              CCN1F405.34     
*CALL ARGSTS                                                               CCN1F405.35     
     &                     ICODE,CMESSAGE)                                 CCN1F405.36     
                                                                           CCN1F405.37     
        IF (JA_co2.EQ.0) THEN                                              CCN1F405.38     
          ICODE=252                                                        CCN1F405.39     
          CMESSAGE="INIT_A2O: Coupling field not enabled - CO2 atmos"      CCN1F405.40     
        ENDIF                                                              CCN1F405.41     
        IF (ICODE.GT.0) GOTO 999                                           CCN1F405.42     
                                                                           CCN1F405.43     
CL 1.32 Atmospheric level 1 CO2 concentration                              CCN1F405.44     
        JO_co2=joc_atmco2                                                  CCN1F405.45     
                                                                           CCN1F405.46     
        IF (JO_co2.EQ.0) THEN                                              CCN1F405.47     
          ICODE=200                                                        CCN1F405.48     
          CMESSAGE="INIT_A2O: Coupling field not enabled - CO2 ocean"      CCN1F405.49     
        ENDIF                                                              CCN1F405.50     
        IF (ICODE.GT.0) GOTO 999                                           CCN1F405.51     
      ENDIF                                                                CCN1F405.52     
                                                                           INITA2O1.442    
CL----------------------------------------------------------------------   INITA2O1.443    
CL 2.  Ocean -> Atmosphere (tag=11)                                        INITA2O1.444    
CL                                                                         INITA2O1.445    
      STASHMACRO_TAG=11                                                    INITA2O1.446    
                                                                           INITA2O1.447    
CL 2.1 Surface temp on atmos grid                                          INITA2O1.448    
      JA_TSTAR=JTSTAR                                                      INITA2O1.449    
      IF (JA_TSTAR.EQ.0) THEN                                              INITA2O1.450    
        ICODE=24                                                           INITA2O1.451    
        CMESSAGE="INIT_A2O: Coupling field not enabled - SST atmos"        INITA2O1.452    
      ENDIF                                                                INITA2O1.453    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.454    
                                                                           INITA2O1.455    
CL     Surface temp on ocean grid                                          GSI0F402.2      
      JO_TSTAR=JOC_TRACER(1,2)                                             GSI0F402.3      
      IF (JO_TSTAR.EQ.0) THEN                                              GSI0F402.4      
        ICODE=101                                                          GSI0F402.5      
        CMESSAGE="INIT_A2O: Coupling field not enabled - SST ocean"        GSI0F402.6      
      ENDIF                                                                GSI0F402.7      
      IF (ICODE.GT.0) GOTO 999                                             GSI0F402.8      
                                                                           GSI0F402.9      
CL 2.2 Surface zonal current on atmos grid                                 INITA2O1.456    
      JA_UCURR=JU_SEA                                                      INITA2O1.457    
      IF (JA_UCURR.EQ.0) THEN                                              INITA2O1.458    
        ICODE=28                                                           INITA2O1.459    
        CMESSAGE="INIT_A2O: Coupling field not enabled - U-curr atmos"     INITA2O1.460    
      ENDIF                                                                INITA2O1.461    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.462    
                                                                           INITA2O1.463    
CL     Surface zonal current on ocean grid                                 GSI0F402.10     
      JO_UCURR=JOC_U(2)                                                    GSI0F402.11     
      IF (JO_UCURR.EQ.0) THEN                                              GSI0F402.12     
        ICODE=121                                                          GSI0F402.13     
        CMESSAGE="INIT_A2O: Coupling field not enabled - U-curr ocean"     GSI0F402.14     
      ENDIF                                                                GSI0F402.15     
      IF (ICODE.GT.0) GOTO 999                                             GSI0F402.16     
                                                                           GSI0F402.17     
CL 2.3 Surface meridional current on atmos grid                            INITA2O1.464    
      JA_VCURR=JV_SEA                                                      INITA2O1.465    
      IF (JA_VCURR.EQ.0) THEN                                              INITA2O1.466    
        ICODE=29                                                           INITA2O1.467    
        CMESSAGE="INIT_A2O: Coupling field not enabled - V-curr atmos"     INITA2O1.468    
      ENDIF                                                                GSI0F402.18     
      IF (ICODE.GT.0) GOTO 999                                             GSI0F402.19     
                                                                           GSI0F402.20     
CL     Surface meridional current on ocean grid                            GSI0F402.21     
      JO_VCURR=JOC_V(2)                                                    GSI0F402.22     
      IF (JO_VCURR.EQ.0) THEN                                              GSI0F402.23     
        ICODE=122                                                          GSI0F402.24     
        CMESSAGE="INIT_A2O: Coupling field not enabled - V-curr ocean"     GSI0F402.25     
      ENDIF                                                                INITA2O1.469    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.470    
                                                                           INITA2O1.471    
*IF DEF,SEAICE                                                             INITA2O1.472    
                                                                           INITA2O1.473    
CL 2.4 Seaice conc. on ocean grid                                          INITA2O1.474    
      JO_AICE=joc_icecon                                                   INITA2O1.475    
      IF (JO_AICE.EQ.0) THEN                                               INITA2O1.476    
        ICODE=146                                                          INITA2O1.477    
        CMESSAGE="INIT_A2O: Coupling field not enabled - seaice ocean"     INITA2O1.478    
      ENDIF                                                                INITA2O1.479    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.480    
                                                                           INITA2O1.481    
CL 2.5 Ice depth on ocean grid                                             INITA2O1.482    
      JO_ICEDEPTH=joc_icedep                                               INITA2O1.483    
      IF (JO_ICEDEPTH.EQ.0) THEN                                           INITA2O1.484    
        ICODE=147                                                          INITA2O1.485    
        CMESSAGE="INIT_A2O: Coupling field not enabled - icedepth ocean"   INITA2O1.486    
      ENDIF                                                                INITA2O1.487    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.488    
                                                                           INITA2O1.489    
CL 2.6 Ice depth on atmos grid                                             INITA2O1.490    
      JA_ICEDEPTH=JICE_THICKNESS                                           INITA2O1.491    
      IF (JA_ICEDEPTH.EQ.0) THEN                                           INITA2O1.492    
        ICODE=32                                                           INITA2O1.493    
        CMESSAGE="INIT_A2O: Coupling field not enabled - icedepth atmos"   INITA2O1.494    
      ENDIF                                                                INITA2O1.495    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.496    
                                                                           INITA2O1.497    
CL 2.7 Snow depth on ocean grid                                            INITA2O1.498    
      JO_SNOWDEPTH=joc_snow                                                INITA2O1.499    
      IF (JO_SNOWDEPTH.EQ.0) THEN                                          INITA2O1.500    
        ICODE=141                                                          INITA2O1.501    
        CMESSAGE="INIT_A2O: Coupling field not enabled - snodepth ocean"   INITA2O1.502    
      ENDIF                                                                INITA2O1.503    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.504    
                                                                           INITA2O1.505    
CL 2.8 Snow depth on atmos grid                                            INITA2O1.506    
      JA_SNOWDEPTH=JSNODEP                                                 INITA2O1.507    
      IF (JA_SNOWDEPTH.EQ.0) THEN                                          INITA2O1.508    
        ICODE=23                                                           INITA2O1.509    
        CMESSAGE="INIT_A2O: Coupling field not enabled - snodepth atmos"   INITA2O1.510    
      ENDIF                                                                INITA2O1.511    
      IF (ICODE.GT.0) GOTO 999                                             INITA2O1.512    
                                                                           INITA2O1.513    
*ENDIF                                                                     INITA2O1.514    
      IF (L_CO2_INTERACTIVE) THEN                                          CCN1F405.53     
CL 2.9 Ocean CO2 flux on ocean grid                                        CCN1F405.54     
        CALL FINDPTR(OCEAN_IM, 30,249,                                     CCN1F405.55     
     &             PROCESS_CODE,FREQ_CODE,START,END,PERIOD,                CCN1F405.56     
     &             GRIDPT_CODE,WEIGHT_CODE,                                CCN1F405.57     
     &             BOTTOM_LEVEL,TOP_LEVEL,GRID_N,GRID_S,GRID_W,GRID_E,     CCN1F405.58     
     &             STASHMACRO_TAG,IMDI,JO_co2flux,                         CCN1F405.59     
*CALL ARGSIZE                                                              CCN1F405.60     
*CALL ARGSTS                                                               CCN1F405.61     
     &                           ICODE,CMESSAGE)                           CCN1F405.62     
        IF (JO_co2flux.EQ.0) THEN                                          CCN1F405.63     
          ICODE=30249                                                      CCN1F405.64     
          CMESSAGE="INIT_A2O: Coupling field not enabled - co2flx, ocn"    CCN1F405.65     
        ENDIF                                                              CCN1F405.66     
        IF (ICODE.GT.0) GOTO 999                                           CCN1F405.67     
                                                                           CCN1F405.68     
CL Ocean CO2 flux on atmos grid                                            CCN1F405.69     
        JA_co2flux=J_CO2FLUX                                               CCN1F405.70     
        IF (JA_co2flux.EQ.0) THEN                                          CCN1F405.71     
          ICODE=250                                                        CCN1F405.72     
          CMESSAGE="INIT_A2O: Coupling field not enabled - co2flx, atm"    CCN1F405.73     
        ENDIF                                                              CCN1F405.74     
        IF (ICODE.GT.0) GOTO 999                                           CCN1F405.75     
      ENDIF                                                                CCN1F405.76     
*IF DEF,TRANGRID                                                           INITA2O1.515    
C                                                                          INITA2O1.516    
CL----------------------------------------------------------------------   INITA2O1.517    
CL    3. Calculate gridline coordinates on all grids using dump            INITA2O1.518    
CL    information on grid spacing and position                             INITA2O1.519    
C                                                                          INITA2O1.520    
      IF (GLOBAL_OCEAN.AND..NOT.CYCLIC_OCEAN) THEN                         INITA2O1.521    
        ICODE=24                                                           INITA2O1.522    
        CMESSAGE='INIT_A2O: A coupled global ocean must be cyclic'         INITA2O1.523    
        GOTO 999                                                           INITA2O1.524    
      ELSEIF (.NOT.GLOBAL_OCEAN.AND.CYCLIC_OCEAN) THEN                     INITA2O1.525    
        ICODE=25                                                           INITA2O1.526    
        CMESSAGE='INIT_A2O: '                                              INITA2O1.527    
     &  //'A coupled limited-area ocean must not be cyclic'                INITA2O1.528    
        GOTO 999                                                           INITA2O1.529    
      ENDIF                                                                INITA2O1.530    
      IF (A_REALHD(5).NE.O_REALHD(5).OR.A_REALHD(6).NE.O_REALHD(6))        INITA2O1.531    
     &THEN                                                                 INITA2O1.532    
        ICODE=26                                                           INITA2O1.533    
        CMESSAGE='INIT_A2O: '                                              INITA2O1.534    
     &  //'Coupled atmosphere and ocean must have coincident poles'        INITA2O1.535    
        GOTO 999                                                           INITA2O1.536    
      ENDIF                                                                INITA2O1.537    
      IF (L_CO2_INTERACTIVE) THEN                                          CCN1F405.77     
        ICODE=27                                                           CCN1F405.78     
        CMESSAGE = "INIT_A2O: wrong grids for CO2 passing"                 CCN1F405.79     
      ENDIF                                                                CCN1F405.80     
*IF -DEF,GLOBAL                                                            INITA2O1.538    
      ICODE=26                                                             INITA2O1.539    
      CMESSAGE='INIT_A2O: A coupled atmosphere must be global'             INITA2O1.540    
      GOTO 999                                                             INITA2O1.541    
*ENDIF                                                                     INITA2O1.542    
      IF (L_CO2_INTERACTIVE.AND..NOT.CYCLIC_OCEAN) THEN                    CCN1F405.81     
        ICODE=28                                                           CCN1F405.82     
        CMESSAGE = "INIT_A2O: CO2 coupling requires a cyclic ocean"        CCN1F405.83     
      ENDIF                                                                CCN1F405.84     
C *** The global alternative can be removed when we are sure that the      INITA2O1.543    
C *** ocean dump headers have been correctly created                       INITA2O1.544    
      IF (GLOBAL_OCEAN) THEN                                               INITA2O1.545    
        XUO(1)=O_REALHD(4)+0.5*O_REALHD(1)                                 INITA2O1.546    
      ELSE                                                                 INITA2O1.547    
        XUO(1)=O_REALHD(8)                                                 INITA2O1.548    
      ENDIF                                                                INITA2O1.549    
      XUO(0)=XUO(1)-O_COLDEPC(1)                                           INITA2O1.550    
      XTO(1)=XUO(1)-0.5*O_COLDEPC(1)                                       INITA2O1.551    
      DO I=2,AOCPL_IMT                                                     GRR0F403.258    
        XUO(I)=XUO(I-1)+O_COLDEPC(I)                                       INITA2O1.553    
        XTO(I)=XTO(I-1)+0.5*(O_COLDEPC(I-1)+O_COLDEPC(I))                  INITA2O1.554    
      ENDDO                                                                INITA2O1.555    
      YUO(1)=O_REALHD(7)                                                   INITA2O1.556    
      YUO(0)=YUO(1)-O_ROWDEPC(1)                                           INITA2O1.557    
      YTO(1)=YUO(1)-0.5*O_ROWDEPC(1)                                       INITA2O1.558    
      DO J=2,AOCPL_JMT                                                     GRR0F403.259    
        YUO(J)=YUO(J-1)+O_ROWDEPC(J)                                       INITA2O1.560    
        YTO(J)=YTO(J-1)+0.5*(O_ROWDEPC(J-1)+O_ROWDEPC(J))                  INITA2O1.561    
      ENDDO                                                                INITA2O1.562    
      XUA(0)=A_REALHD(4)-0.5*A_REALHD(1)                                   INITA2O1.563    
      DO I=1,AOCPL_ROW_LENGTH                                              GRR0F403.260    
        XTA(I)=A_REALHD(4)+(I-1)*A_REALHD(1)                               INITA2O1.565    
        XUA(I)=A_REALHD(4)+(I-0.5)*A_REALHD(1)                             INITA2O1.566    
      ENDDO                                                                INITA2O1.567    
      XTA(AOCPL_ROW_LENGTH+1)=A_REALHD(4)+AOCPL_ROW_LENGTH*A_REALHD(1)     GRR0F403.261    
      DO J=1,AOCPL_P_ROWS                                                  GRR0F403.262    
        YTA(J)=A_REALHD(3)-(J-1)*A_REALHD(2)                               INITA2O1.570    
      ENDDO                                                                INITA2O1.571    
      DO J=0,AOCPL_P_ROWS                                                  GRR0F403.263    
        YUA(J)=A_REALHD(3)-(J-0.5)*A_REALHD(2)                             INITA2O1.573    
      ENDDO                                                                INITA2O1.574    
*ENDIF                                                                     INITA2O1.575    
C                                                                          INITA2O1.576    
 999  CONTINUE                                                             INITA2O1.577    
      RETURN                                                               INITA2O1.578    
CL----------------------------------------------------------------------   INITA2O1.579    
      END                                                                  INITA2O1.580    
*ENDIF                                                                     INITA2O1.581