Data from: Non-linear climatic response to the weakening of the Atlantic meridional overturning circulation during glacial times
Data files
Abstract
The climatic response to the weakening of the Atlantic Meridional Overturning Circulation (AMOC) is investigated under glacial conditions representative of Heinrich Stadial 5 (at 49,000 years ago) using a fully coupled Earth System Model (ACCESS-ESM1.5). Three North Atlantic freshwater forcing experiments are conducted using the ACCESS-ESM1.5 model to evaluate the climate response to different magnitudes of AMOC weakening. This dataset includes all the model outputs used in this study.
Dataset DOI: 10.5061/dryad.tht76hff1
Description of the data and file structure
This dataset includes model outputs from North Atlantic freshwater forcing experiments at 49,000 years ago (49 ka) climate conditions in the Australian Earth System Model ACCESS-ESM1.5. The data files contain monthly data for different variables to recreate the figures in the paper.
The data files are in netCDF format. Each file contains the 50-year analysis period of the three freshwater forcing experiments in the paper, with 0.4 Sv, 0.3 Sv and 0.2 Sv freshwater input per model year in the North Atlantic under 49 ka glacial conditions, indicated by the 49ka_shutdown, 49ka_0.3Sv and 49ka_0.2Sv simulations, respectively.
Files and variables
File: AMOC.zip
Description: Annual Atlantic Meridional Overturning Circulation (AMOC) time series (Sv) for all experiments
File: MSLP.zip
Description: Monthly mean sea level pressure (MSLP; Pa) for each freshwater hosing experiment
File: SAT.zip
Description: Monthly surface air temperature (K) for all experiments
File: Precip.zip
Description: Monthly precipitation (kg m-2 s-1) outputs for each experiment
File: uwind.zip
Description: Monthly zonal (uwind) wind (m/s) for all pressure levels for each experiments
File: vwind.zip
Description: Monthly meridional (vwind) (m/s) for each experiments
Sharing/Access information
Data was derived from the model outputs of simulations present at the National Computational Infrastructure. The model code is available at https://access-hive.org.au/models/run-a-model/run-access-esm/#prerequisites