Model Change Bulletin
              
                                    MCB#6                          9/01/04

                            CAL3QHC  (Dated 04244)
                            CAL3QHCR (Dated 04244)

     Both CAL3QHC and CAL3QHCR are covered by this Model Change Bulletin (MCB)
under the CAL3QHC model name.  Since CAL3QHCR is an enhanced but separate
version of CAL3QHC, both models will retain their respective Julian creation
dates.  Under this MCB, both models, have been updated and therefore both
models have a new creation date.

     Both models have been recompiled using Compaq Visual Fortran V6.6c.  This
should eliminate some memory management problems that were occurring on 
Windows XP based systems when using executables that were compiles using 
Microsoft Fortran and other 16-bit compilers.

The following are detailed changes made to both models

CAL3QHC

Only a few informational sections were modified:

The model's SCRAM header was changed from: 

C  *                                                                        *
C  *                         CAL3QHC (DATED 95221)                          *
C  *                                                                        *
C  *                *** SEE CAL3QHC (DATED 95221) MCB #4 ***                *
C  *                                                                        *
C  *     ON THE SUPPORT CENTER FOR REGULATORY AIR MODELS BULLETIN BOARD     *
C  *                                                                        *
C  *                        (919) 541-5742 (8-N-1)                          *
C  *                                                                        *

to:

C  *                                                                        *
C  *                         CAL3QHC (DATED 04244)                          *
C  *                                                                        *
C  *                       *** SEE CAL3QHC MCB#6 ***                        *
C  *                                                                        *
C  *        ON THE SUPPORT CENTER FOR REGULATORY AIR MODELS WEB SITE        *
C  *                                                                        *
C  *                      http://www.epa.gov/scram001                       *
C  *                                                                        *
*****

A brief description of the pertinent change was added:

The following comment was added:

C     |                                                                |
C     | CAL3QHC (Dated 04244) was recompiled using Compaq Visual       |
C     |         Fortran Version 6.6C.  This should alleviate memory    |
C     |         management and stack segment errors when Windows XP    |
C     |         is the Operating System.  Some minor comments were     |
C     |         added or modified.
C     |                                                                |
C      ================================================================
C

The following warning was changed from:

    6 FORMAT('                      NOTICE'/
     +5x,'The format of CAL3QHC (Dated 95221) has been made user-',
     +   'friendlier',/5X,
     +'by using a free format.  However, the program has detected the',
     +   ' possible use ',/5X,

to:

    6 FORMAT('                      NOTICE'/
     +5x,'CAL3QHC has been made user-friendlier by using a ',/5X,
     +'free format.  However, the program has detected the',
     +   ' possible use ',/5X,



CAL3QHCR

     A bug was reported and fixed where CAL3QHCR was erroneously terminating
when reading Year 2000 meteorological data.

The main program header was updated.

from:

C  *                                                                        *
C  *                         CAL3QHCR (DATED 04181)                         *
C  *                                                                        *
C  *                       *** SEE CAL3QHC MCB#5 ***                        *
C  *                                                                        *

to:

C  *                                                                        *
C  *                         CAL3QHCR (DATED 04244)                         *
C  *                                                                        *
C  *                       *** SEE CAL3QHC MCB#6 ***                        *
C  *                                                                        *

A brief comment was added describing the changes made to the model.

C                       September 1, 2004 - A bug that prevented Year 2000  
C                                           meterological data from being used
C                                           was reported and fixed.
C                                       


This code corrects ends the erroneously terminating bug mentioned above.

from:

          IF (MYR .LT. 1 .OR. MYR .GT. 99) MFLG(1) = 1

to:

          IF (MYR .LT. 0 .OR. MYR .GT. 99) MFLG(1) = 1



The creation date was updated.

from:

 200  FORMAT (A1,58X,'CAL3QHCR (Dated: 04181)')

to:

 200  FORMAT (A1,58X,'CAL3QHCR (Dated: 04244)')


from:

 300  FORMAT (A1,46X,'CAL3QHCR (Dated: 04181)')

to:

 300  FORMAT (A1,46X,'CAL3QHCR (Dated: 04244)')


The PM format was expanded to the hundreths decimal place.
This was done to accomodate some sensitivity testing and left
in place.


from:

  164 FORMAT (1X, I4, 2F8.1)

to:


C          Insertion, Adesman 1/16/2003
C  164 FORMAT (1X, I4, 2F8.1)
  164 FORMAT (1X, I4, 2F9.2)
C           End Of Insertion