2Ma transient climate simulation data

To better quantify the impact of climate variability on human evolutionary transitions, the ICCP has conducted an unprecedent super-long transient climate model simulation, covering the global climate history of the past 2 million years ago (“2Ma”). This simulation is based on the Community Earth System Model version 1.2 (CESM1.2) in 3.75°×3.75° horizontal resolution forced with the Northern hemispheric ice sheet distribution and CO2 concentration and astronomical insolation changes. We combined a transient Pleistocene climate model simulation with an extensive compilation of hominin fossils and archaeological artefacts to study the environmental context of hominin evolution. The climate envelope model, based on a 4-dimensional Mahalanobis metric, stratifies the data entries into spatiotemporally delimited groups for early African hominins (Homo habilis and Homo ergaster combined as one group, Eurasian Homo erectus, Homo heidelbergensis, Homo neanderthalensis, and Homo sapiens, separately).

Dataset doi: 10.22741/iccp.20230001

Related publications: Yun, K.-S., Timmermann, A., Lee, S.-S., Willeit, M., Ganopolski, A., and Jadhav, J.: A transient CGCM simulation of the past 3 million years, Clim. Past Discuss. [preprint], https://doi.org/10.5194/cp-2023-34, in review, 2023.

The simulation was extended up to 3-million-years. The extended 3Ma data is available through the link https://climatedata.ibs.re.kr/data/3ma-transient-climate-simulation.