Step 1. Create merge branch from a copy of the trunk at the shared base revision of the two site merges:

svn copy svn+ssh://acc@forge.ipsl.jussieu.fr/ipsl/forge/projets/nemo/svn/trunk@2855 \
          svn+ssh://acc@forge.ipsl.jussieu.fr/ipsl/forge/projets/nemo/svn/branches/2011/dev_NOC_UKMO_MERGE \
          -m"Create branch for the merge of all NOC and UKMO 2011 developments. See ticket #890. Step 1: copy trunk at the base revision number used by both site merge branches" : 

Committed revision 3089.

Step2. Merge in changes from the dev_UKM0_2011 branch. revert unwanted changes to NEMO_book.pdf and arch files. Commit changes

svn ci -m"Branch dev_NOC_UKMO_MERGE #890. Step 2. Merge in changes from the dev_UKM0_2011 branch with unwanted changes reverted"
Password: 
Sending        DOC/TexFiles/Biblio/Biblio.bib
Sending        DOC/TexFiles/Chapters/Chap_ASM.tex
Sending        DOC/TexFiles/Chapters/Chap_OBS.tex
Sending        DOC/TexFiles/Chapters/Chap_SBC.tex
Sending        DOC/TexFiles/Chapters/Introduction.tex
Adding  (bin)  DOC/TexFiles/Figures/Fig_OBS_dataplot_main.pdf
Adding  (bin)  DOC/TexFiles/Figures/Fig_OBS_dataplot_prof.pdf
Sending        DOC/TexFiles/Figures/logo_UKMO.pdf
Sending        DOC/TexFiles/Namelist/namobs_example
Sending        DOC/TexFiles/Namelist/namsbc_cpl
Deleting       DOC/TexFiles/Namelist/namsbc_cpl_co2
Adding         NEMOGCM/ARCH/arch-PW6_METO.fcm
Adding         NEMOGCM/ARCH/arch-ifort_linux_omp.fcm
Adding         NEMOGCM/ARCH/arch-mpxlf_aix.fcm
Replacing      NEMOGCM/ARCH/arch-xlf_aix.fcm
Adding         NEMOGCM/ARCH/arch-xlf_pwr6.fcm
Adding         NEMOGCM/CONFIG/AMM
Adding         NEMOGCM/CONFIG/AMM-PISCES
Sending        NEMOGCM/CONFIG/GYRE/EXP00/namelist
Sending        NEMOGCM/CONFIG/ORCA2_LIM/EXP00/1_namelist
Sending        NEMOGCM/CONFIG/ORCA2_LIM/EXP00/namelist
Sending        NEMOGCM/CONFIG/ORCA2_OFF_PISCES/EXP00/namelist
Sending        NEMOGCM/CONFIG/POMME/EXP00/namelist
Sending        NEMOGCM/NEMO/LIM_SRC_2/limsbc_2.F90
Sending        NEMOGCM/NEMO/LIM_SRC_2/limthd_zdf_2.F90
Replacing      NEMOGCM/NEMO/OPA_SRC/BDY
Sending        NEMOGCM/NEMO/OPA_SRC/DIA/diahsb.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DOM/dom_oce.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DOM/dommsk.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DOM/domzgr.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DOM/phycst.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DYN/divcur.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DYN/dynnxt.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DYN/dynspg.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DYN/dynspg_exp.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DYN/dynspg_flt.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DYN/dynspg_oce.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DYN/dynspg_ts.F90
Sending        NEMOGCM/NEMO/OPA_SRC/DYN/sshwzv.F90
Sending        NEMOGCM/NEMO/OPA_SRC/FLO/floblk.F90
Sending        NEMOGCM/NEMO/OPA_SRC/IOM/prtctl.F90
Sending        NEMOGCM/NEMO/OPA_SRC/LBC/lib_mpp.F90
Sending        NEMOGCM/NEMO/OPA_SRC/LBC/mppini.F90
Replacing      NEMOGCM/NEMO/OPA_SRC/OBC/obc_vectopt_loop_substitute.h90
Replacing      NEMOGCM/NEMO/OPA_SRC/OBC/obcdyn.F90
Replacing      NEMOGCM/NEMO/OPA_SRC/OBC/obcdyn_bt.F90
Replacing      NEMOGCM/NEMO/OPA_SRC/OBC/obcfla.F90
Replacing      NEMOGCM/NEMO/OPA_SRC/OBC/obcrst.F90
Sending        NEMOGCM/NEMO/OPA_SRC/SBC/cpl_oasis3.F90
Sending        NEMOGCM/NEMO/OPA_SRC/SBC/fldread.F90
Sending        NEMOGCM/NEMO/OPA_SRC/SBC/sbc_ice.F90
Sending        NEMOGCM/NEMO/OPA_SRC/SBC/sbcapr.F90
Sending        NEMOGCM/NEMO/OPA_SRC/SBC/sbcblk_core.F90
Sending        NEMOGCM/NEMO/OPA_SRC/SBC/sbccpl.F90
Adding         NEMOGCM/NEMO/OPA_SRC/SBC/sbcice_cice.F90
Sending        NEMOGCM/NEMO/OPA_SRC/SBC/sbcice_if.F90
Sending        NEMOGCM/NEMO/OPA_SRC/SBC/sbcice_lim_2.F90
Sending        NEMOGCM/NEMO/OPA_SRC/SBC/sbcmod.F90
Sending        NEMOGCM/NEMO/OPA_SRC/SOL/solver.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traadv.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traadv_cen2.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traadv_eiv.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traadv_muscl.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traadv_muscl2.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traadv_qck.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traadv_tvd.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traadv_ubs.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/trabbl.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traldf.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traldf_bilap.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traldf_bilapg.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traldf_iso.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traldf_iso_grif.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/traldf_lap.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/tranxt.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/trazdf.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/trazdf_exp.F90
Sending        NEMOGCM/NEMO/OPA_SRC/TRA/trazdf_imp.F90
Sending        NEMOGCM/NEMO/OPA_SRC/nemogcm.F90
Sending        NEMOGCM/NEMO/OPA_SRC/oce.F90
Adding         NEMOGCM/NEMO/OPA_SRC/par_AMM_12km.h90
Sending        NEMOGCM/NEMO/OPA_SRC/par_oce.F90
Sending        NEMOGCM/NEMO/OPA_SRC/step.F90
Sending        NEMOGCM/NEMO/OPA_SRC/step_oce.F90
Sending        NEMOGCM/NEMO/TOP_SRC/C14b/trcsms_c14b.F90
Sending        NEMOGCM/NEMO/TOP_SRC/CFC/trcnam_cfc.F90
Sending        NEMOGCM/NEMO/TOP_SRC/CFC/trcsms_cfc.F90
Sending        NEMOGCM/NEMO/TOP_SRC/LOBSTER/trcbio.F90
Sending        NEMOGCM/NEMO/TOP_SRC/LOBSTER/trcexp.F90
Sending        NEMOGCM/NEMO/TOP_SRC/LOBSTER/trcopt.F90
Sending        NEMOGCM/NEMO/TOP_SRC/LOBSTER/trcsed.F90
Sending        NEMOGCM/NEMO/TOP_SRC/PISCES/p4zsed.F90
Sending        NEMOGCM/NEMO/TOP_SRC/PISCES/trcrst_pisces.F90
Sending        NEMOGCM/NEMO/TOP_SRC/PISCES/trcsms_pisces.F90
Sending        NEMOGCM/NEMO/TOP_SRC/SED/sedini.F90
Sending        NEMOGCM/NEMO/TOP_SRC/SED/sedmodel.F90
Sending        NEMOGCM/NEMO/TOP_SRC/SED/sedwri.F90
Sending        NEMOGCM/NEMO/TOP_SRC/TRP/trcadv.F90
Sending        NEMOGCM/NEMO/TOP_SRC/TRP/trcbbl.F90
Sending        NEMOGCM/NEMO/TOP_SRC/TRP/trcdmp.F90
Sending        NEMOGCM/NEMO/TOP_SRC/TRP/trcldf.F90
Sending        NEMOGCM/NEMO/TOP_SRC/TRP/trcnxt.F90
Sending        NEMOGCM/NEMO/TOP_SRC/TRP/trcrad.F90
Sending        NEMOGCM/NEMO/TOP_SRC/TRP/trcsbc.F90
Sending        NEMOGCM/NEMO/TOP_SRC/TRP/trczdf.F90
Sending        NEMOGCM/NEMO/TOP_SRC/TRP/trdmld_trc.F90
Sending        NEMOGCM/NEMO/TOP_SRC/TRP/trdmod_trc.F90
Sending        NEMOGCM/NEMO/TOP_SRC/oce_trc.F90
Sending        NEMOGCM/NEMO/TOP_SRC/trc.F90
Sending        NEMOGCM/NEMO/TOP_SRC/trcdia.F90
Sending        NEMOGCM/NEMO/TOP_SRC/trcdta.F90
Sending        NEMOGCM/NEMO/TOP_SRC/trcini.F90
Sending        NEMOGCM/NEMO/TOP_SRC/trcnam.F90
Sending        NEMOGCM/NEMO/TOP_SRC/trcrst.F90
Sending        NEMOGCM/NEMO/TOP_SRC/trcstp.F90
Adding         NEMOGCM/NEMO/TOP_SRC/trcsub.F90
Sending        NEMOGCM/NEMO/TOP_SRC/trcwri.F90
Sending        NEMOGCM/TOOLS/COMPILE/cfg.txt
Adding         NEMOGCM/TOOLS/OBSTOOLS
Adding         NEMOGCM/TOOLS/REBUILD_NEMO
Transmitting file data ...................................................................................................
Committed revision 3094.

Step 3. Undo some changes necessary to fully reinstate OBC and fix a bug in obcdta.F90

svn ci -m"Branch dev_NOC_UKMO_MERGE #890. Undid some changes to fully reinstate OBC code"
 
Sending        NEMOGCM/NEMO/OPA_SRC/FLO/floblk.F90
Sending        NEMOGCM/NEMO/OPA_SRC/LBC/lib_mpp.F90
Sending        NEMOGCM/NEMO/OPA_SRC/OBC/obcdta.F90
Transmitting file data ...
Committed revision 3096.