Kulmala et al. (2010)
Also: Kulmala et al. 2010
Atmospheric data over a solar cycle: no connection between galactic cosmic rays and new particle formation
Kulmala, M., Riipinen, I., Nieminen, T., Hulkkonen, M., Sogacheva, L., Manninen, H. E., Paasonen, P., Petaja, T., Dal Maso, M., Aalto, P. P., Viljanen, A., Usoskin, I., Vainio, R., Mirme, S., Mirme, A., Minikin, A., Petzold, A., Horrak, U., Plass-Dulmer, C., Kerminen V.-M. (2010). Atmospheric data over a solar cycle: no connection between galactic cosmic rays and new particle formation. Atmospheric Chemistry and Physics. 10(4),1885-1898. PDF
https://doi.org/10.5194/acp-10-1885-2010
References
All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.