The DeepMIP contribution to PMIP4

By Dan Lunt, Matthew Huber, E. Anagnostou, M. Baatsen, Rodrigo Caballero, Robert M. DeConto, Henk A. Dijkstra, Y. Donnadieu, D. Evans, Ran Feng and 37 more. 2017

173 citations recorded by the source corpus.

Past warm periods provide an opportunity to evaluate climate models under extreme forcing scenarios, in particular high ( >  800 ppmv) atmospheric CO2 concentrations. Although a post hoc intercomparison of Eocene ( ∼  50  Ma) climate model simulations and geological data has been carried out previously, models of past high-CO2 periods have never been evaluated in a consistent framework. Here, we present an experimental design for climate model simulations of three warm periods within the early Eocene and the latest Paleocene (the EECO, PETM, and pre-PETM). Together with the CMIP6 pre-industrial control and abrupt 4 ×  CO2 simulations, and additional sensitivity studies, these form the first phase of DeepMIP – the Deep-time Model Intercomparison Project, itself a group within the wider Paleoclimate Modelling Intercomparison Project (PMIP). The experimental design specifies and provides guidance on boundary conditions associated with palaeogeography, greenhouse gases, astronomical configuration, solar constant, land surface processes, and aerosols. Initial conditions, simulation length, and output variables are also specified. Finally, we explain how the geological data sets, which will be used to evaluate the simulations, will be developed.

Subfields: Atmospheric Science, Global and Planetary Change

View Paper: https://www.semanticscholar.org/paper/b3c850501c8497e0c70e7059d0c78a968f376a03

Citations in the corpus

• DeepMIP: model intercomparison of early Eocene climatic optimum (EECO) large-scale climate features and comparison with proxy data (2020, unknown): “…(3.75 ◦ × 2.5 ◦ as opposed to 1.25 ◦ × 1.25 ◦ The HadCM3L simulations were initialized from a similar idealized temperature and salinity state as described in Lunt et al. (2017) but with a function that scales with cos 2 lat) rather than cos(lat) and overall reduced initial temperatures to…”