The impacts of an AMOC slowdown on Southern Hemisphere and Australian climates at 8.2 ka in ACCESS-ESM1.5 model

Greenland ice cores reveal an abrupt cooling of up to 3.3°C 8.2 kyr ago (8.2 ka), lasting for roughly 160 years. The event was likely caused by a weakening of the Atlantic Meridional Overturning Circulation (AMOC) due to freshwater drainage into the North Atlantic. It was associated with a global-scale climate change but is recorded in very few high-resolution paleoclimatic time series from the Southern Hemisphere (SH). Here, we investigate the 8.2 ka event in the SH, particularly the Australian climate response to a weakened AMOC. Five North Atlantic meltwater experiments are conducted with the Australian Earth System Model, ACCESS-ESM1.5, to evaluate the sensitivity of AMOC responses to freshwater perturbations under early Holocene conditions as well as their climate impact. , , , # Data from: The impacts of an AMOC slowdown on Southern Hemisphere and Australian climates at 8.2 ka in ACCESS-ESM1.5 model

[https://doi.org/10.5061/dryad.8pk0p2nxj](https://doi.org/10.5061/dryad.8pk0p2nxj)

Model outputs for freshwater forcing experiments at 8.2 ka climate conditions. The data files AMOC.nc, SAT.nc, Precip.nc, wind.nc contain monthly mean values to recreate all the plots in the manuscript.

## Description of the data and file structure

The data files are in netcdf format. AMOC.nc and SAT.nc contain the results from all five freshwater hosing experiments in the manuscript and the control experiment, Precip.nc and wind.nc contain the results from our best-fit experiment (FW100yr) and the control experiment.

Below is the description for all the files and variables. The units are provided in brackets.

### Files and variables

#### File: AMOC.zip

**Description:** Atlantic Meridional Overturning Circulation time series (Sv) for all experiments. Numbers in the naming...,