Changing access argument in ww3_outp to support cray compiler (#1463)

Author: AliS-Noaa

model/src/ww3_outp.F90

@@ -967,10 +967,10 @@ PROGRAM W3OUTP
           J = LEN_TRIM(FNMPRE)
           IF (FLFORM) THEN
             OPEN(NDSTAB, FILE=TRIM(TFNAME), STATUS='OLD', &
-                IOSTAT=IERR, FORM='UNFORMATTED', ACCESS='APPEND')
+                IOSTAT=IERR, FORM='UNFORMATTED', ACCESS='SEQUENTIAL', POSITION='APPEND')
           ELSE
             OPEN(NDSTAB, FILE=TRIM(TFNAME), STATUS='OLD', &
-                IOSTAT=IERR, FORM='FORMATTED', ACCESS='APPEND')
+                IOSTAT=IERR, FORM='FORMATTED', ACCESS='SEQUENTIAL', POSITION='APPEND')
           END IF
 
           PROCESS_POINT_ONLY = .TRUE.