Model Change Bulletin MCB#1 MIXING HEIGHT PROGRAM (dated 98340) This Model Change Bulletin essentially initiates the activities of the SCRAM Web site for this program. The Mixing Height program code available from this web site is a PC compatible version for use of processing meteorological data for refined dispersion models, such as ISCST3. This program utilizes the CD-ROM meteorological data from NCDC to compute mixing heights. See the README.TXT in the MIXHTS file for information on ordering data from the National Climatic Data Center. This program will henceforth be identified by its name and a Julian date, i.e.: Mixing Height (dated 98340). Future changes to this program will be identified by an updated julian date found on the first line of the model source code and followed by a reference to a SCRAM Model Change Bulletin (MCB#n) which will explain the nature and contents of the changes. All Model Change Bulletins for this program will always be available for back reference on this BBS. In the future, notification of changes (MCBs) to this model will be made in the WHAT'S NEW section of this web site found under the SCRAM CONTENTS heading.