Penman et al (2014)
Also: Penman et al 2014
Rapid and sustained surface ocean acidification during the Paleocene-Eocene Thermal Maximum
Penman, D. E., Hönisch, B., Zeebe, R. E., Thomas, E., & Zachos, J. C. (2014). Rapid and sustained surface ocean acidification during the Paleocene‐Eocene Thermal Maximum. Paleoceanography, 29(5), 357-369.
http://www.soest.hawaii.edu/oceanography/faculty/zeebe_files/Publications/PenmanPA14.pdf
DOI: 10.1002/2014PA002621
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.