Transform OC to POM
CONV_OC_POM
An object of class numeric
of length 1.
Kanakidou, M., Seinfeld, J.H., Pandis, S.N., Barnes, I., Dentener, F.J., Facchini, M.C., Dingenen, R.V., Ervens, B., Nenes, A.N.C.J.S.E., Nielsen, C.J. and Swietlicki, E., 2005. Organic aerosol and global climate modelling: a review. Atmospheric Chemistry and Physics, 5(4), pp.1053-1123.