english:

 

                                 

 

where the parameter Emifac is the emission rate unit factor, Emilbl is the label for the emission units (up to 40 characters), and Conlbl and Deplbl are the output unit labels (up to 40 characters) for concentration and deposition calculations, respectively.  For example, to produce output concentrations in milligrams per cubic meter, assuming input units of grams per sec, the following card could be input:

SO EMISUNIT  1.0E3  GRAMS/SEC   MILLIGRAMS/M**3

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since there are 1.0E3 milligrams per gram.  The emission rate unit factor applies to all sources for a given run.  Since the model uses one or more spaces to separate different fields on  the input runstream images, it is important that there not be any spaces within the label fields on this card.  Thus, instead of entering 'GRAMS PER SECOND' for the emission label, a label of 'GRAMS/SECOND', or 'GRAMS‑PER‑SECOND' or an equivalent variation should be used.

     Since the ISCST model allows for both concentration and deposition to be output in the same model run, the EMISUNIT keyword cannot be used to specify emission unit factors if more than one output type is being generated.  The ISCST model therefore allows for concentration and deposition units to be specified separately through the CONCUNIT and DEPOUNIT keywords, respectively.  The syntax and type of the CONCUNIT keyword are summarized below:

Syntax:

SO CONCUNIT  Emifac  Emilbl  Conlbl

Type:

Optional, Non‑repeatable

where the parameter Emifac is the emission rate unit factor, Emilbl is the label for the emission units (up to 40 characters), and Conlbl is the output unit label (up to 40 characters) for concentration calculations.  The syntax and type of the DEPOUNIT keyword are summarized below:

Syntax:

SO DEPOUNIT  Emifac  Emilbl  Deplbl

Type:

Optional, Non‑repeatable

where the parameter Emifac is the emission rate unit factor, Emilbl is the label for the emission units (up to 40 characters), and Deplbl is the output unit label (up to 40 characters) for deposition calculations. 

 

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deutsch:

 

castellano: DIS CUS DES  RAD   english: DIS CUS DES RAD  

 

 português: DIS CUS DES RAD   italiano:   DIS CUS  DES RAD

 

français:  DIS CUS DES RAD