&NUDGING
  lnudge  =.TRUE.,
  hnudgsta= 0.0,
  hnudgend= 4.0,
  lsynop  =.TRUE.,
  laircf  =.FALSE.,
  ldribu  =.FALSE.,
  ltemp   =.FALSE.,
  lpilot  =.FALSE.,
  ycdfdir='$OBSDIR',
 /