Mainz isoprene mechanism

Taraborrelli D, Lawrence MG, Butler TM, Sander R, Lelieveld J (2009) Mainz Isoprene Mechanism 2 (MIM2) an isoprene oxidation mechanism for regional and global atmospheric modelling. Atmos Chem Phys 9 2751-2777... 

The Mainz isoprene mechanism (Poschl et al., 2000) was based on and developed by intercomparison with the MCM, but it is highly condensed with only 16 species and 44 reactions. It was designed to provide a compact representation of the key isoprene chemistry in global models which incorporate explicit O3, NO , , HO , , CO, and CH4 chemistry. Table X-B-3 shows the MIM species included and the compounds they represent. Note that some important species formed in isoprene oxidation, such as CH2O and CH3OOH, are not included as separate species, because they are already included in the CH4 chemistry they appear in the 44 reaction mechanism of MIM as products only. Considerable simplification is introduced by including only MACR its rate coefficients with OH and O3 are taken as the arithmetic mean of those for methacrolein and methylvinylketone. 

More recently, it became clear that a more detailed isoprene mechanism that reduced the biases observed from further extensive testing of the MIM would be of value, and Taraborelli et al. (2009) developed the Mainz Isoprene Mechanism 2 (MIM2). The total number of species was increased to 68 and the number of reactions to 199. 

---