The transport section of the Air Resources Laboratories (ARL) Atmospheric Transport and Dispersion Model (ATAD, Heffter, 1980) has been revised and simplified for use on interactive computer terminals. The resulting model, called the Heffter Interactive-Terminal Transport Model (ARL-HITTM) calculates four trajectories per day from one origin, forward or backward in time, using observed rawinsonde and pibal data for North America as input to the model. Trajectories, of three days duration, are based on observed winds averaged in a transport layer above terrain either chosen by the user or determined by the model. (ERA citation 05:027665)


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    Title :

    User's Guide to the Heffter Interactive-Terminal Transport Model (ARL-HITTM)


    Contributors:

    Publication date :

    1980


    Size :

    31 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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