Abstract. The early Eocene (56 to 48 million years ago) is inferred to have
been the most recent time that Earth's atmospheric CO2 concentrations
exceeded 1000 ppm. Global mean temperatures were also substantially warmer
than those of the present day. As such, the study of early Eocene climate provides insight
into how a super-warm Earth system behaves and offers an opportunity to
evaluate climate models under conditions of high greenhouse gas forcing. The
Deep Time Model Intercomparison Project (DeepMIP) is a systematic
model–model and model–data intercomparison of three early Paleogene time
slices: latest Paleocene, Paleocene–Eocene thermal maximum (PETM) and early
Eocene climatic optimum (EECO). A previous article outlined the model
experimental design for climate model simulations. In this article, we
outline the methodologies to be used for the compilation and analysis of
climate proxy data, primarily proxies for temperature and CO2. This
paper establishes the protocols for a concerted and coordinated effort to
compile the climate proxy records across a wide geographic range. The
resulting climate “atlas” will be used to constrain and evaluate climate
models for the three selected time intervals and provide insights into the
mechanisms that control these warm climate states. We provide version 0.1 of
this database, in anticipation that this will be expanded in subsequent
publications.
Abstract. The early Eocene (56 to 48 million years ago) is inferred to have been the most recent time that Earth's atmospheric CO2 concentrations exceeded 1000 ppm. Global mean temperatures were also substantially warmer than present day. As such, study of early Eocene climate provides insight into how a super-warm Earth system behaves and offers an opportunity to evaluate climate models under conditions of high greenhouse gas forcing. The Deep Time Model Intercomparison Project (DeepMIP) is a systematic model-model and model-data intercomparison of three early Paleogne time slices: latest Paleocene, Paleocene-Eocene thermal maximum and early Eocene climatic optimum. A previous article outlined the model experimental design for climate model simulations. In this article, we outline the methodologies to be used for the compilation and analysis of climate proxy data, primarily proxies for temperature and CO2. This paper establishes the protocols for a concerted and coordinated effort to compile the climate proxy records across a wide geographic range. The resulting climate atlas will be used to constrain and evaluate climate models for the three selected time intervals, and provide insights into the mechanisms that control these warm climate states. We provide version 0.1 of this database, in anticipation that this will be expanded in subsequent publications.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.