include file: TYPOCBIO 3
C     COMDECK TYPOCBIO                                                     TYPOCBIO.2      
C     ----------------                                                     TYPOCBIO.3      
      REAL                                                                 TYPOCBIO.4      
     * DAYLEN(JMT,360)     ! Hours of daylight at latitude during year     TYPOCBIO.5      
     *,DLCO(KM,3)          ! Invariant terms in photosynthesis calc.       TYPOCBIO.6      
C                                                                          TYPOCBIO.7      
C  Note that the 360 in the dimensioning of DAYLEN refers to               TYPOCBIO.8      
C  number of days in a climatological year - ie 360-day year is            TYPOCBIO.9      
C  assumed as biological model would only be using for climate             TYPOCBIO.10     
C  runs.                                                                   TYPOCBIO.11     
C                                                                          TYPOCBIO.12     
C                                                                          TYPOCBIO.13