--- MITgcm/pkg/dic/dic_surfforcing.F	2006/11/28 21:16:03	1.12
+++ MITgcm/pkg/dic/dic_surfforcing.F	2007/08/13 02:29:40	1.14
@@ -1,4 +1,4 @@
-C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/dic/dic_surfforcing.F,v 1.12 2006/11/28 21:16:03 stephd Exp $
+C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/dic/dic_surfforcing.F,v 1.14 2007/08/13 02:29:40 dfer Exp $
 C $Name:  $
 
 #include "DIC_OPTIONS.h"
@@ -63,12 +63,16 @@
 
       kLev=1
 
+c if coupled to atmsopheric model, use the
+c Co2 value passed from the coupler
+#ifndef USE_ATMOSCO2
 C PRE-INDUSTRIAL STEADY STATE pCO2 = 278.0 ppmv
        DO j=1-OLy,sNy+OLy
         DO i=1-OLx,sNx+OLx
            AtmospCO2(i,j,bi,bj)=278.0d-6
         ENDDO
        ENDDO
+#endif
 
 
 C =================================================================
@@ -132,6 +136,16 @@
      &          + sca4 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj) 
      &                *theta(i,j,kLev,bi,bj)
 
+c
+#ifdef USE_PLOAD
+C Convert anomalous pressure pLoad (in Pa) from atmospheric model
+C to total pressure (in Atm)
+C Note: it is assumed the reference atmospheric pressure is 1Atm=1013mb
+C       rather than the actual ref. pressure from Atm. model so that on
+C       average AtmosP is about 1 Atm.
+               AtmosP(i,j,bi,bj)= 1. _d 0 + pLoad(i,j,bi,bj)/Pa2Atm
+#endif
+
 C Determine surface flux (FDIC)
 C first correct pCO2at for surface atmos pressure
               pCO2sat(i,j) =