a2dMax = MAX(a2dMax,aW2d(i,j,bi,bj))
a2dMax = MAX(a2dMax,aS2d(i,j,bi,bj))
_GLOBAL_MAX_RL( a2dMax, myThid )
IF ( a2dMax .GT. 0. _d 0 ) a2dNorm = 1. _d 0/a2dMax
_RL a2dMax, a2dNorm
a2dMax = 0. _d 0