Using IMMIS^em for calculating emissions
If not otherwise specified, the computing core of  IMMIS^em is used to calculate emissions in IMMIS^luft.

detailed information about IMMIS^em input data

Thus,  IMMIS^luft uses the current available emission factors issued by the UBA/BUWAL (UBA - Federal Environmental Agency, Germany / BUWAL - Federal Office for environment, forest and landscape Switzerland) to calculate emission levels. In  IMMIS^luft are the following emission factors and fleet compositions implemented.

• for Version 5 from the HBEFA Version 3.1 of February 2010

Arbitrary Emissions using the General Import Interface 
Using the general import interface IMMIS^luft processes any other user defined emissions.

Using Mobilev for calculating emissions
Mobilev is the emission model available at the Federal Environmental Agency, Germany. Using an available interface, emissions calculated in Mobilev can be used in IMMIS^luft. To integrate the results of the UBA modell Mobilev in IMMIS^luft the program Mobilev and the corresponding extension of the IMMIS^luft Import-/ Export interface is required for purchase.