Exploring dynamic shifts in North Atlantic climate using CESMv1.2 time slice simulations of MIS-11c ...

• Main Authors: Crow, Brian R, Prange, Matthias, Schulz, Michael
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: CESM; eddy heat flux; Greenland climate; MIS-11; North African monsoon; North Atlantic jet stream; Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic ArcTrain; Arctic; Greenland; Climate change; North Atlantic; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.942092; https://doi.pangaea.de/10.1594/PANGAEA.942092

Data are from a series of time-slice simulations using the Community Earth System Model (CESM) v1.2.2 run on the HLRN supercomputing systems. This configuration uses a coupled atmosphere, ocean, land, and sea-ice model to simulate many facets of climate at relatively high resolution (approx. 1° in the ocean and sea ice, 1.9° latitude by 2.5° longitude in the land and atmosphere). A baseline preindustrial control simulation was integrated under constant 1850 solar and greenhouse gas conditions for 2500 years. Time slice simulations corresponding to key insolation minima and maxima during the Marine Isotope Stage 11 (MIS-11) interglacial were branched from year 1500 of this simulation and run for 1000 additional years under the new forcing conditions. Only orbital parameters (longitude of perihelion, obliquity, and eccentricity) and key greenhouse gases (carbon dioxide, methane, and nitrous oxide) were altered between simulations. The data here represent a selection of calculated output fields including 2m air ... : Zipball containing single-variable netCDF files corresponding to the six timeslice simulations made during MIS-11 (423ka, 418ka, 413ka, 408ka, 403ka, and 398ka orbital and greenhouse gas conditions) and the preindustrial control simulation (1850 orbital and greenhouse gas conditions). Variables include seasonal time series of 2m air temperature, total eddy heat flux at the 700hPa atmospheric pressure level (stationary + transient eddy heat flux components combined), wind velocity at 300hPa, and total (convective + non-convective) precipitation. Files contain 100-year time series of the mean June-August (JJA) or December-February (DJF) values of the specified variable corresponding to the final 100 years of each specified simulation. ...