[MITgcm-cvs] CVS Commit development/heimbach/ctrl_bottom_topo/model/src

[Martin Losch]

Update of /u/gcmpack/development/heimbach/ctrl_bottom_topo/model/src
In directory forge:/tmp/cvs-serv3406/model/src

Modified Files:
	cg2d.F 
Log Message:
o multiple changes to cg2d that reflect my attempts to solve the
  numerical instability in the adjoint variables.
  cg2d:
  - replace eta_qrNm1 with recip_etqrNm1 and store that to increase
    precision
  - use err_sq and cg2dTolerance**2 instead of err=sqrt(err_sq) to
    determine exit criterium (saves divisions by small numbers in the
    adjoint code)
  cg2d as an implicit function (CADJ LOOP = ITERATION)
  - use "our" cg2d as a starting point
  - remove superfluous storing directives
  - still it does not work