Hi, I have some modelling code that uses data from Hitran 2012 (https://www.cfa.harvard.edu/hitran/Download/HITRAN2012.pdf). I want to use some data from Lifbase but unfortunately the absorption coefficient units do not match. Lifbase units are given in m3 J-1 s-2 whereas Hitran units are given as cm-1 / (molecule cm-2). Some simple calculations arrives at the following conversion between the two: [Hitran units] = ( M_r / (100 * N_A) ) * [Lifbase units] where M_r is the molecular mass of the species and N_A is Avogadro's constant. For some reason this does not seem to be correct. The absorption coefficients are out by a few orders of magnitude. Is my conversion correct? Thanks in advance!