Experiment title 
: ACCESS-AM3 N96 2-year simulations 2007-2008, with varying critical relative humidity and cloud erosion rate
Summary : These are sensitivity experiments to a previous experiment proposal. I have run a control simulation AM3-N96 and a SST+4K simulation from 1982-2012 to investigate cloud feedback. Here I would like to investigate the sensitivity of cloud feedback to two parameters (critical relative humidity and cloud erosion rate). The year 2007 will be used as a spin-up, and 2008 for analysis. 2008 is chosen because it is a common period among CMIP5, CMIP6, and CloudSat-CALIPSO datasets.
Scientific motivation: Cloud feedback remains the leading source of uncertainty in estimating equilibrium climate sensitivity (ECS). Given large ECS in ACCESS-CM3 and UK models employing the latest UM, it is instrumental to investigate cloud responses to evolving environmental conditions in these models. Here we aim to elucidate the role of clouds in the model responses to radiative forcing.
Experiment Name : am3-sensitivity
People : Qinggang Gao, Yi Huang
Model: ACCESS-AM3
Configuration: https://github.com/ACCESS-NRI/access-am3-configs
Initial conditions: Default
Run plan: 8 simulations, 2 years, N96 resolution
Simulation details: 2007, global
Total KSUs required : 15 KSU / year * 2 years * 8 simulations = 240 KSU
Total storage required : 34 GB / year * 2 years * 8 simulations = 530 GB
Outputs:/g/data/gx60/experiments/2026-03-04_am3-control/cylc-run/
Restarts: Default
Related articles:
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